Technologic Systems TS-5700 User Manual

TS-5700 User's Manual
Technologic Systems, Inc.
16525 East Laser Drive
Fountain Hills, AZ 85268
TEL 480.837.5200 FAX 480.837.5300
info@embeddedARM.com
This revision of the TS-5700 manual is dated
May 2009
All modifications from previous versions are listed in Appendix H.
A PDF version of this manual is included on the CD that shipped with your unit(s).
The PDF version includes many active links that may be useful to you.
Copyright © 2009 by Technologic Systems, Inc. All rights reserved.
Table Of Contents
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Limited Warranty 1 Introduction 2 PC Compatibility
2.1 Operating Systems 3 Power 4 Memory
4.1 SDRAM
4.2 Flash
4.3 Compact Flash Cards
4.4 Using the SanDisk USB Compact Flash Card Reader 5 Serial Ports
5.1 Serial Port Configuration Registers
5.2 Serial Port Hardware
5.3 RS-485 Support
5.4 Automatic RS-485 TX Enable
5.5 Adding Serial Ports
5.6 COM3 and COM4 Interrupt Configuration Register 6 Digital I/O
6.1 DIO Header
6.2 Using LCD Port as Digital I/O 7 LCD Interface 8 Matrix Keypad Support 9 The 10/100 Base-T Ethernet Port
9.1 LINUX TCP/IP configuration
9.2 DOS TCP/IP configuration - Packet Driver and WATTCP
9.3 WATTCP.CFG configuration file
9.4 DOS TCP/IP configuration - MS Client for DOS 10 PCMCIA Bridge
10.1 Hardware
10.2 Software (Linux support only)
10.3 Supported Devices 11 SPI Bus
11.1 Hardware 12 Real Time Clock 13 Watchdog Timer 14 LED, Jumpers and External Reset 15 PC/104 Bus Expansion 16 Loading or Transferring Files
16.1 Developing with the Technologic Systems TS-9500
16.2 Transferring Files with Compact Flash
16.3 Zmodem Downloads 17 Debugging
17.1 Integrated BIOS Debugger
17.2 Using other Debuggers 18 Video, Keyboard, and Console Redirection
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19 System BIOS Setup Screens
19.1 Main CMOS Configuration Screen
19.2 Basic CMOS Configuration
19.3 Adding a TS-9400 or TS-9500 with Compact Flash
19.4 Custom CMOS Configuration
19.5 Shadow Configuration 20 Feedback and Updates to the Manual Appendix A - Board Diagram and Dimensions Appendix B - Operating Conditions Appendix C - System Memory Map Appendix D - System I/O Map Appendix E - BIOS Interrupt Functions
Int 15h / Function B000h - Technologic Systems BIOS information Int 15h / Function B010h - LED Control Int 15h / Function B042h - Alphanumeric LCD Support Int 15h / Function B040h - Matrix Keypad Support Int 15h / Function A1h - Console I/O Redirection
Int 15h / Function B020h - Jumper Pin Status Appendix F - Using a Higher Rate (10x) Baud Clock Appendix G - Further References Appendix H - Manual Revisions Contact Information
Limited Warranty
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Technologic Systems warrants this product to be free of defects in material and workmanship for a period of one year from date of purchase. During this warranty period Technologic Systems will repair or replace the defective unit in accordance with the following instructions
Contact Technologic Systems and obtain a Return Material Authorization (RMA) number and a copy of
the RMA form.
Fill out the RMA form completely and include it and dated proof of purchase with the defective unit being
returned. Clearly print the RMA number on the outside of the package.
This limited warranty does not cover damages resulting from lighting or other power surges, misuse, abuse, abnormal conditions of operation, or attempts to alter or modify the function of the product.
This warranty is limited to the repair or replacement of the defective unit. In no event shall Technologic Systems be liable or responsible for any loss or damages, including but not limited to any lost profits, incidental or consequential damages, loss of business, or anticipatory profits arising from the use or inability to use this product.
Repairs made after the expiration of the warranty period are subject to a flat rate repair charge and the cost of return shipping. Please
contact Technologic Systems to arrange for any repair service.
1. Introduction
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The model TS-5700 is a compact, full-featured PC compatible Single Board Computer based on the AMD Elan520 processor. At 133 MHz, it is approximately 10 times faster than our other 386EX based products for only a small additional cost. PC compatibility allows for rapid development since you can use standard PC development tools such as Turbo C or Power Basic or Linux based tools as well. If you have done work in the PC world in the past, you will find you can now build applications for a very small target that does not require a keyboard, video, floppy disks, or hard drives.
By adding the optional TS-9500 peripheral board, you can compile and debug directly on the TS-5700 with standard VGA video and keyboard interfaces. Alternatively, you can typically write and debug code on a host PC using standard development tools for the PC platform, then simply copy it to and run it on the TS-5700 without modification. If additional peripherals are required, the PC/104 expansion bus allows for many standard functions available off-the-shelf. It is also very simple to create a custom PC/104 peripheral board for those special features that differentiate your product. Technologic Systems can provide technical support as well as a free quotation for any custom hardware, software, or BIOS modifications you may require.
This manual is fairly short. This is because for the most part, the TS-5700 is a standard x86-based PC compatible computer, and there are hundreds of books about writing software for the PC platform. The primary purpose of this manual is documenting where the TS-5700 differs from a standard PC.
2. PC Compatibility
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PC compatibility requires much more than just an x86 processor. It requires PC compatible memory and I/O maps as well as a PC compatible BIOS. The General Software EMBEDDED BIOS offers
a high degree of compatibility with past and present BIOS standards allowing it to run off-the shelf operating systems and application software.
The EMBEDDED BIOS has been tested with all major versions of DOS, including MS-DOS, DR-DOS, and Embedded DOS 6-XL; all major versions of OS/2, including MS-OS/2 and IBM OS/2; MS-Windows 3.1, Windows-95, Windows NT, and NetWare 386.
2.1 Operating Systems
Technologic Systems Embedded PCs are compatible with a wide variety of x86-based operating systems. A partial list of operating systems that our customers are currently using with our board includes:
TNT Embedded Toolsuite, Phar Lap Software
UCos II
RTKernel, On Time Software
RTEMS, On-Line Applications Research Corporation
DOS with WATTCP, public domain TCP/IP source code for DOS
Linux
The TS-5700 is shipped, free of charge, with Embedded DOS ROM by General Software.
The TS-5700 can be shipped upon request with Linux pre-installed for a nominal fee. The Linux file system and kernel is also freely available on the web should you wish to install it yourself. Typically, the Linux OS requires a 16MB or larger Compact Flash or an M-System's DiskOnChip.
3. Power
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The TS-5700 requires regulated 5VDC at 800 mA (typical maximum). When running the Linux OS, it will drop to about 300 mA during low usage. A quick release screw-down terminal block for the 5V power and power GND connections is provided for easy connection to an external power supply.
When power is first supplied to the TS-5700, the board mounted LED is immediately turned on under hardware control. Once the processor begins execution, the LED is turned off. The LED then turns on then off to provide a characteristic blink during execution of POST. If the LED does not turn on at all, the most likely problem is the power supply. Check that the +5V and GND connections are not reversed. A diode protects the board against damage in such a situation, but it will not run.
Please note that supply voltages over 6 VDC may damage the TS-5700.
Be sure to use a regulated 5 VDC power supply, preferably with current limiting to 3 to 5 Amps. If using a PC power supply that may be capable of supplying 20 Amps or more, it is possible to do irreversible damage if the polarity on the power leads is reversed.
4. Memory
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4.1 SDRAM
The TS-5700 has a total of 32 Megabytes (MB) of high-speed SDRAM providing 640 Kilobytes (KB) of base memory, 31 MB of extended memory, and 128 KB of shadow RAM for the BIOS. This is identical to a standard PC memory map. The TS-5700 can be ordered with 64MB of SDRAM, but it is not field upgradeable.
The TS-5700 SDRAM chips are soldered directly to the board. By not using a SIMM socket, the TS-5700 is much more reliable in high-vibration environments.
4.2 Flash
There is a total of 2 MB of Flash memory on the TS-5700 with 128 KB reserved for the BIOS. During POST, this 128 KB area is copied from Flash into SDRAM at addresses E0000h through FFFFFh for improved performance (a standard technique known as BIOS Shadowing). The remainder of the Flash memory (1920 KB) is configured as a solid-state disk (SSD) drive appearing as drive A. Drive A is fully supported by the BIOS as an INT 13h drive.
The physical Flash memory is accessed by the BIOS in protected mode at memory address 148M.
The Flash memory is guaranteed capable of a minimum of 100,000 write/erase cycles. This means that if you completely erase and rewrite the SSD drive 10 times a day you have over 27 years before any problems would occur. Reading the SSD produces no wear at all.
Power failure during Flash writes can cause corruption of Flash drive FAT tables (A: or B:). Therefore applications writing frequently should use a Compact Flash card drive which is much more tolerant of power failures during write cycles.
Flash drive A is read-only when JP3 is not installed. Removing JP3 also makes the 128 kbyte BIOS area of the Flash write protected as well. Write protecting the A: drive can be useful if there are critical files in the final product that must be very secure.
4.3 Compact Flash Cards
If 2MB of Flash is insufficient for your application, additional non-volatile storage can be added with a Compact Flash (CF) card. CF cards can supply additional storage that will behave much as a hard drive does in a typical PC with sizes ranging from 8MB to 512MB. These products are inherently more rugged than a hard drive since they are completely solid-state with no moving parts.
The Compact Flash card has the added advantage of being removable media. A SanDisk USB Compact Flash reader/writer (which is included in the TS-5700 Developer's Kit) is recommended for the host PC for file transfers. This results in the ability to quickly move files from a host PC to the TS-5700 using a Compact Flash card as the removable media. Since the Compact Flash card appears as a standard IDE drive on the TS-5700, it uses no additional RAM for drivers. While a USB Compact Flash reader allows for hot swapping of the Compact Flash card on the host PC, the Compact Flash interface on the TS-5700 is not hot swappable, the TS-5700 must be rebooted after removing or installing a Compact Flash card.
4.4 Using the SanDisk USB Compact Flash Card Reader
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This device allows for a very fast and reliable method of moving files between the host PC and target SBC (TS-
5700). The Compact Flash (CF) card can then be hot swapped in the host system (inserted or removed without rebooting the host PC). Sometimes it is necessary to unplug the USB cable and reinstall it after swapping CF cards (at least Windows ME seems to prefer this).
Note: The TS-5700 always needs to be powered off before swapping CF cards.
5. Serial Ports
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The four PC compatible asynchronous serial ports (COM1 through COM4) provide a means to communicate with external serial devices such as printers, modems, etc. Each is independently configured as a standard PC COM port that is compatible with the National Semiconductor NS16C450. Alternatively, these ports can be changed to the 16C550 mode with 16 byte FIFOs in both the receive and transmit UART channels. COM1 appears in the I/O space at 3F8h - 3FFh and uses IRQ4. COM2 is located at 2F8h - 2FFh and uses IRQ3. COM3 appears in the I/O space at 3E8h-3EFh. COM4 appears in the I/O space at 2E8h-2EFh. COM3 and COM4 have a non-standard method for configuring interrupts; Configuration Register for details.
By changing an internal configuration register in the Elan520, the serial clock to the COM ports can be switched to a 10 times rate (18.432 MHz). This feature allows baud rates higher than 115 Kbaud (such as 230K baud or 576K baud), as well as non-standard lower baud rates (such as 24 Kbaud). information, COM1 & COM2 only
The COM1 and COM2 ports may also be configured to use a DMA channel, which may be useful when very high baud rates are being used. Download the
5.1 Serial Port Configuration Registers
see section 5.6 COM3 and COM4 Interrupt
See Appendix F for further
AMD Elan SC520 user's manual for further details.
Because both serial ports are 100% PC compatible, software written for the PC that accesses serial ports directly or through standard BIOS calls will work without modification on the TS-5700. The details of the COM port internal registers are available in most PC documentation books or consult the
Download the
AMD Elan SC520 user's manual for further details.
TL16C550 data sheet.
5.2 Serial Port Hardware
The COM2 RS-232 port has 7 signals supported: RXD, TXD, RTS, CTS, DTR, DSR, and DCD. This port can interface to almost any RS-232 device. The COM1 RS-232 serial port has 4 signals supported: RXD, TXD, RTS and CTS. This is quite sufficient to interface with the vast majority of serial devices. The TS-5700 COM ports are accessible on two 10-pin Headers labeled COM1 and COM2. Adaptor cables are available to convert these into standard 9-pin Sub-D male connectors.
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Table 5.2a COM2Serial Port Header Pin-Out
5V Power 10 5 GND
NC 9 4 DTR [out]
[in] CTS 8 3 TXD [out]
[out] RTS 7 2 RXD [in]
[in] DSR 6 1 DCD [in]
Table 5.2b COM1Serial Port Header Pin-Out
5V Power 10 5 GND
Rx- 9 4 Rx+ (DTR) [out]
[in] CTS 8 3 TX data [out]
[out] RTS 7 2 Rx data [in]
Tx- 6 1 Tx+ [in]
NOTE: The serial port headers use a non­standard numbering scheme. This was done so the header pins would have the same numbering as the corresponding DB-9 pin; i. e. pin 8 (CTS) on the header connects to pin 8 on the DB-9
NOTE: COM1 has connections for the RS­232 port and the RS-485 port on the same 10­pin header, only one of the two functions will be used at a time. DTR unavailable when full duplex RS-485 installed.
The pin-outs for the COM1 and COM2 10-pin headers are listed above.
When using COM1 in the RS-232 mode, be sure that the jumper labeled “232” is installed.
The COM3 RS-232 port has 6 signals supported: RXD, TXD, RTS, CTS, DTR, and DCD. The COM4 RS-232 port has 7 signals supported: RXD, TXD, RTS, CTS, DTR, DSR, and DCD. These ports can interface to almost any RS-232 device. The TS-5700 COM ports are accessible on two 10-pin Headers labeled COM3 and COM4. Adaptor cables are available to convert these into standard 9-pin Sub-D male connectors. See section 5.6 for COM3, COM4 interrupt configuration.
Table 5.2c COM3Serial Port Header Pin-Out
5V Power 10 5 GND
NC 9 4 DTR [out]
[in] CTS 8 3 TXD [out]
[out] RTS 7 2 RXD [in]
NC 6 1 DCD [in]
NOTE: The serial port headers use a non­standard numbering scheme. This was done so the header pins would have the same numbering as the corresponding DB-9 pin; i. e. pin 8 (CTS) on the header connects to pin 8 on the DB-9
Table 5.2d COM4Serial Port Header Pin-Out
5V Power 10 5 GND
NC 9 4 DTR [out]
[in] CTS 8 3 TX data [out]
[out] RTS 7 2 Rx data [in]
[in] DSR 6 1 DCD [in]
NOTE: The serial port headers use a non­standard numbering scheme. This was done so the header pins would have the same numbering as the corresponding DB-9 pin; i. e. pin 8 (CTS) on the header connects to pin 8 on the DB-9
5.3 RS-485 Support
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RS-485 Quick Start Procedure:
1. The RS-485 option must be installed
2. Install FD jumper for full-duplex or HD for half-duplex RS-485 operation
3. Attach the RS-485 cable to the 10-pin Header-Adaptor cables to Sub-DB9 connector are available from Technologic Systems
4. Set the COM1 UART serial parameters (baud rate, data, parity, and stop bits, interrupts, etc).
5. Run Auto485.exe utility(configures bits 6 and 7 at I/O 75h)(and initializes Timer2)
6. For Half-Duplex RTS mode: To transmit data, assert RTS and write the data to the UART. To receive data, deassert RTS and read the data from the UART
7. For Half-Duplex Automatic mode: just read or write data to the UART
An option is available to add support to COM1 for half duplex or full duplex RS-485. RS-485 drivers allow communications between multiple nodes up to 4000 feet (1200 meters) via twisted pair cable. Half-duplex RS­485 requires one twisted pair plus a Ground connection, while full duplex requires two twisted pair plus a Ground.
For half-duplex operation, a single twisted pair is used for transmitting and receiving. Bit 6 at I/O location 75h must be set to enable RTS mode or bit 7 can be set to enable Automatic mode. In RTS mode, the serial port RTS signal controls the RS-485 transmitter/receiver (
See Automatic RS-485 TX Enable below). When RTS is asserted
true, the RS-485 transmitter is enabled and the receiver disabled. When RTS is de­asserted the transmitter is tri-stated (disabled) and the receiver is enabled. Since the transmitter and receiver are never both enabled, the serial port UART does not receive the data transmitted.
Table 5.3 COM1Receiver
Source
Jumper Receiver Source
FD Full-Duplex RS-422 HD Half-Duplex RS-485 232 RS-232
For full-duplex operation, two twisted pairs are used and the transmitter can typically be left on all the time. Simply use RTS mode, and set RTS true.
Table 5.2b above for connector pin-outs.
See
Note: the correct jumper (FD or HD) must be installed.
See Table 5.3 for details.
Fail-safe RS-4 bias resistors are used to bias the TX+, TX- and RX+, RX- lines to the correct state when these lines are not being actively driven. This is an important consideration, since in a typical RS-485 installation, the drivers are frequently tri-stated. If fail-safe bias resistors are not present, the 485 bus may be floating and very small amounts of noise can cause spurious characters at the receivers. 4.7KW resistors are used to pull the TX+ and RX+ signals to 5V and also to bias the TX- and RX- signals to ground. Termination resistors may be required for reliable operation when running long distances at high baud rates. Termination resistors should only be installed at each end of an RS-485 transmission line. In a multi-drop application where there are several drivers and/or receivers attached, only the devices at each end of the transmission line pair should have termination resistors.
A read at I/O location 75h bit 1 will return a "1" when the RS-485 option is installed.
5.4 Automatic RS-485 TX Enable
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TS-5700 boards support fully automatic TX enable control. This simplifies the design of half-duplex systems since turning off the transmitter via the RTS signal is typically difficult to implement. The COM1 UART transmit holding register and the transmit shift register both must be polled until empty before deasserting RTS when using the RTS mode. The design gets more difficult when using the TX FIFO or when using a multi-tasking OS such as Linux.
In Automatic mode, Timer2 and a Xilinx PLD keep track of the bits shifting out the COM1 UART. This circuit automatically turns on/off the RS-485 transceiver at the correct times. This only requires the TIMER2 to be initialized once based on baud rate and data format, and bit 7 at I/O location 75 must be set. The utility called AUTO485.exe is included in the /util directory.
5.5 Adding Serial Ports
If your project requires more than four serial ports, additional ports may be added via the PC/104 expansion bus. Technologic Systems offers three different peripheral boards (TS-SER1, TS-SER2, and TS-SER4) that add 1,2, or 4 extra COM ports respectively. Typically these would be configured as COM5 or be assigned other higher COM I/O locations. Because DOS only directly supports four serial ports, any additional ports beyond four will require software drivers if using DOS.
The TS-5700 PC/104 bus has IRQ 7, 9, 12 or 15 available for additional serial ports.
Note: IRQ7 is used by many PCMCIA cards.
Typically each serial port has a dedicated interrupt, but the TS-SER4 allows all four extra serial ports to share a single interrupt. This is very helpful in systems with a large number of serial ports since there are a limited number of IRQ lines available.
5.6 COM3 and COM4 Interrupt Configuration Register
To configure COM3 and COM4 interrupts write to the Interrupt Configuration bits in I/O space at address 79h. The reset condition has no interrupt configured for COM3 or COM4. See the table below for details.
Table 5.6 COM3 and COM4 Interrupt Configuration Register
at I/O 79h
Bit1 Bit0 COM3-COM4 Interrupt Configuration 0 0 No IRQ driven by COM3 or COM4 (default at reset) 0 1 COM3 drives IRQ5, COM4 drives IRQ6 1 0 COM3 and COM4 share IRQ5 1 1 COM3 and COM4 share IRQ6
6 Digital I/O
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There are 23 Digital Input/Output (DIO) lines available on the TS-5700. These are available on two headers labeled DIO and LCD. In addition to the DIO signals, each header also has 5 Volt power and Ground available, while the DIO header has an external reset available on pin 12 and IRQ6 in available on pin 13. The header labeled LCD can be used as 11 DIO lines or as an alphanumeric LCD interface ( DIO lines are arranged as byte-wide ports that can be programmed as either inputs or outputs in groups of 4-bits.
Four of the DIO lines are dedicated 0-5V swing outputs with high current drive capability. Two of these outputs can sink or source 25 mA, while the other two can sink or source 100 mA.
The 5V power output pins on these headers have a 750 mA Poly-Fuse to prevent excessive current.
6.1 DIO Header
See Section 6.2). Most of the
The DIO port provides +5V, GND, and 12 digital I/O lines that may be used to interface the TS-5700 with a wide range of external devices. DIO lines DIO_0 thru DIO_7 are a byte-wide port accessed at I/O location Hex 7E, while the 4 other DIO lines DIO_8 thru DIO_11 are accessed in the lower 4 bits of I/O location Hex 7F. I/O location Hex 7D is a control port for DIO. The direction of DIO lines DIO_0 thru DIO_3 is controlled by bit 0 of I/O location Hex 7D, and the direction of DIO_4 thru DIO_7 is controlled by bit 1 of I/O location Hex 7D. The DIO_8 thru DIO_11 lines are always outputs. In all cases, when a control bit is a “1”, it is setting the corresponding DIO lines to be Outputs, while a “0” sets them to be Inputs. All control bits at I/O location Hex 7D are initialized at reset to be “0”.
The DIO_0 thru DIO_7 digital outputs on this port can source 4 mA or sink 8 mA and have logic swings between 3.3V and ground. The digital inputs have standard TTL level thresholds and must not be driven below 0 Volts or above 5.0 Volts. DIO lines DIO_0 thru
Table 6.1 DIO Header
Pinout
5 V 16 15 DIO_7 IRQ6 14 13 DIO_6 Reset# 12 11 DIO_5 DIO_11 10 9 DIO_4 DIO_10 8 7 DIO_3 DIO_9 6 5 DIO_2 DIO_8 4 3 DIO_1 GND 2 1 DIO_0
DIO_5 have 4.7KW pull-up resistors to 5V biasing these signals to a logic”1". DIO_6 and DIO_7 are not biased and may float to either state when configured as Inputs, if not being actively driven.
DIO_10 and DIO_11 outputs have very high current drivers and can source or sink 100 mA each.
DIO_8 and DIO_9 outputs can source or sink 25 mA. DIO_8 thru DIO_11 all swing between 0 and 5V.
Pin 14 on the DIO header is connected directly to IRQ6 (also available on the PC/104 bus).
Pin 12 is an active low reset signal. It has a 4.7K pull-up resistor to 5V. A logic low on this signal will cause a hard reset to the TS-5700 (same as a power cycle).
It is possible change the DIO_11 output so that it is driven by the Timer2 signal. The Timer2 signal has historically been used to drive the speaker in a PC. The DIO_11 output has 100 mA source and sink drive capability, so it could be used to directly drive a small 8 ohm speaker if a series capacitor is used to block the DC component and a series resistor is added to reduce the power out. A 47 uF capacitor and a 27 ohm resistor is a good starting point (adjust the resistor for volume).
If bit 2 at I/O location Hex 79 is set, Timer2 will drive the DIO_11 output (instead of bit 3 at I/O location Hex 7F).
6.2 Using LCD Port as Digital I/O
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The LCD Port can be used as 11 additional digital I/O lines or it can be used to interface to a standard alphanumeric LCD display. At system reset, the port defaults to DIO mode. If using an LCD display this port can be switched to LCD mode by writing a “1” into bit 4 at I/O location Hex 7D, or the BIOS call to enable the LCD also sets bit 4 at I/O location Hex 7D (See Section 8 for LCD mode).
When the LCD port is in DIO mode, pins LCD_RS and LCD_WR are digital inputs, LCD_EN is a digital output, and LCD_0 thru LCD_7 are programmable as either inputs or outputs.
LCD_RS and LCD_WR can be read at I/O location 73h bits 7 and 6, respectively. The state of LCD_EN is controlled by writing to I/O location 73h bit 0.
Table 6.2 Pinout for LCD
header when used as DIO
LCD_6 14 13 LCD_7 LCD_4 12 11 LCD_5 LCD_2 10 9 LCD_3 LCD_0 8 7 LCD_1 LCD_WR 6 5 LCD_EN Bias 4 3 LCD_RS GND 2 1 5V
LCD_0 thru LCD_7 can be read or written at I/O location 72h. The direction of this byte­wide port (pins 7 – 14) is determined by bits 2 and 3 at I/O location 7Dh. If bit 2 is a zero, then the lower 4 bits (pins 7 – 10) are inputs. If bit 2 is logic 1, then pins 7 – 10 are outputs. Bit 3 at location 7Dh controls the upper 4 bits, pins 11 – 14 in a like manner.
All digital outputs on this port can source 4 mA or sink 8 mA and have logic swings between 3.3V and ground. The digital inputs have standard TTL level thresholds and must not be driven below 0 Volts or above 5.0 Volts.
The 5V power has a 750 mA Poly-Fuse to limit the current.
7 LCD Interface
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A 14-pin LCD connector is provided on the TS-5700 for interfacing with standard alphanumeric LCD displays. These displays use a common controller, the Hitachi HD44780 or equivalent. While software written for the HD44780 will work with all displays using the controller, the cable needed is dependent on the display used. For most displays, a straight­through type ribbon cable can be used. The connector on the LCD display is typically
Table 7a LCD Header
Pinout
2 4 6 8 10 12 14 1 3 5 7 9 11 13
mounted on the backside of the display.
Warning: Using an incorrect cable or mounting the LCD connector on the front-side can result in a reverse power polarity and can damage the LCD display. Please refer to your LCD data sheets for in-depth information.
The TS-5700 BIOS incorporates a fairly complete set of INT10h video routines that work with the LCD. Once the LCD has been enabled (INT15h/Func B042h – see Appendix E below)
Pin Function Comments
Table 7b LCD Header Signals
1 LCD 5V
The LCD can be written to as the standard I/O device. This means that software can be developed and debugged using standard I/O calls, and the executable will work with LCD, VGA video, or redirected COM port.
See the Section 18 for more information.
I/O addresses 72h and 73h are used to access the LCD. Table 7a shows the header pin-out, while Table 7b lists the LCD signals. The
2 LCD GND 3 LCD_RS Register Select (Buffered AO) 4 Bias 680 Ohm to GND 5 LCD_EN Active high Enable 6 LCD_WR# Active low Write
section below will briefly describe the LCD interface signals. The LCD can be controlled directly by software at these addresses.
The register select signal is simply the buffered A0 address line. Thus, reads and writes to 72h cause register select to be low, and those to 73h cause it to be high. Generally the LCD uses this line to separate data bytes from command bytes. See your LCD data sheet
7 LCD_D1 D0-D7 Buffered 8 LCD_D0
bi-directional data bus
9 LCD_D3 10 LCD_D2 11 LCD_D5
for details.
12 LCD_D4
The LCD Write# signal is an active low write enable line.
LCD Enable is an active high signal, raised whenever the LCD
13 LCD_D7 14 LCD_D6
addresses are being read or written.
D0 – D7 are bi-directional, buffered copies of the data bus and carry all data and commands to the LCD.
Table 7b is not the standard pin-outs given for LCD displays. But this pin-out allows a standard ribbon cable to be used when the ribbon cable is attached to the backside of the LCD.
Example LCD code is available at: ftp://ftp.embeddedarm.com/ts-x86-sbc/old-downloads/UTIL.ZIP
8 Matrix Keypad Support
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The DIO2 port, signals DIO_0 through DIO_7, may be configured to support a 4 x 4 matrix keypad. When enabled, BIOS firmware performs all the work, making the matrix keypad appear as a simple 16-key keyboard to software. This allows the use of standard keyboard access routines. The default set of keys translated by the BIOS consists of 0 – 9, A – D, *, and #. The # key is returned as an ASCII Carriage Return character (Hex 0D). Because the user is writing the software, this set of keys is usually sufficient. However, a custom translation table can be loaded, allowing the use of function keys, arrow keys, or any other key on the keyboard.
Matrix keypad support is enabled or disabled using INT15h, Function B040h
(see Appendix E). Once enabled,
standard keyboard BIOS functions are enabled. Note that console redirection and the matrix keypad support are mutually exclusive – console redirection must be disabled to use the keypad.
A matrix keypad can be used with console redirection only if the keypad is not used as stdin, but read from as a hardware device. This is useful if one wishes to use console redirection or to use a keyboard as stdin.
See Section 18 for an explanation of console I/O and redirection. See the Technologic Systems download page for
example code.
ftp://ftp.embeddedarm.com/ts-x86-sbc/old-downloads/
When using a matrix keypad, the DIO signals DIO_0 through DIO_7 are not available as general I/O.
A Linux driver has been written for the Matrix Keypad, the Linux driver with full “C” source code can be found on our website. Refer to the “
Linux Developers Manual” on the Technologic Systems website.
9 The 10/100 Base-T Ethernet Port
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The TS-5700 has a full-function IEEE 802.3 (10/100 Mbit/sec) Ethernet port provided by Davicom DM9102A Ethernet controllers. The DM9102A is a single-chip, 32-bit PCI Ethernet controller that includes such features as full-duplex operation, power saving shutdown modes, LED indicators for link status/activity (Green) and auto­sense network speed detection (Amber). The physical interface is 10/100Base-T (RJ45 connector).
The TS-5700 has both a LINK/ACTIVITY LED and a 10/100 speed LED built into each RJ-45 connector that indicates the current Ethernet status. The LINK LED (left side of connector, green) is active when a valid Ethernet link is detected. This LED should be ON whenever the TS-5700 is powered on and properly connected to a 10/100BaseT Ethernet network. The LINK/ACTIVITY LED will blink to indicate network activity either inbound or outbound. The SPEED LED (right side of connector, amber) will be on when a 100 Mbit network is detected and off for a 10 Mbit network. Both of these LEDs are controlled by the DM9102A and do not require initialization by the processor.
9.1 LINUX TCP/IP configuration
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When using the TS-5700 with TS-Linux, the DM9102A driver can be included in the kernel or loaded as a kernel module. If the Technologic Systems kernel is used, the DM9102A driver is built into the kernel. The settings stored in EEPROM on the TS-5700 are used to configure the DM9102A.
The TCP/IP settings for the TS-Linux are configured in the file ‘/etc/sysconfig/ifcfg-eth0’, here is a listing:
DEVICE=eth0 # Name of Ethernet Interface
IPADDR=192.168.0.50 # IP address of this Ethernet interface
NETMASK=255.255.255.0 # Used with NETWORK to determine local IP's
NETWORK=192.168.0.0 # Used with NETWORK to determine local IP's
BROADCAST=192.168.0.255 # Broadcast IP for system wide messages
ENABLE=yes Initialize on startup
The TCP/IP network settings are configured in the file ‘/etc/sysconfig/network_cfg’, here is a listing:
### Technologic Systems
### General Network Configuration File
###
NETWORKING=yes
GATEWAY=192.168.0.1 # Gateway for internet access
GW_DEV=eth0 # Gateway device to use
Hostname="miniepc.embeddedARM.com" # Host name for this computer
BOOTPROTO=no
DEFRAG_IPV4=no
FORWARD_IPV4=no
The TCP/IP name resolution server is configured in the file ‘/etc/resolv.conf’, here is a listing:
Nameserver 192.168.0.1 # Name server for domain name lookups.
To access the web server, open a web browser and enter “192.168.0.50” as the address. This should display the sample web page which demonstrates some of the functionality of Apache with PHP. Use the “ifconfig” command at the bash prompt to display the status of the Ethernet ports. See the Technologic Systems
support page.
Linux
9.2 DOS TCP/IP configuration – Packet Driver and WATTCP
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A standard packet driver for DOS is installed on the board as shipped, along with sample network applications written with the public domain Waterloo TCP/IP software (WATTCP). WATTCP is a freely available package (including source code) that provides TCP/IP connectivity for programs written for the DOS environment. See the Technologic Systems
http://www.embeddedARM.com/old/downloads/wat2001t.zip
In addition, we have written a simple DOS HTTP web server using WATTCP that is included on the TS-5700 utility disk. The simple web server uses CGI calls to control a DIO pin from a web browser. Full source code is included, and you are free to modify and extend the code for your own use on Technologic Systems Single Board Computers.
The DOS packet driver (DM9PCIPD.COM) is loaded by AUTOEXEC.BAT once DOS starts. Hardware settings are read from the EEPROM chips and used by the packet driver to initialize each DM9102A. Below is an example of the DOS command line to load a packet driver for the Ethernet interface:
DM9PCIPD 0X60
The TCP/IP settings for the WATTCP code are stored in the WATTCP.CFG configuration file in the A: \ETHERNET directory, this file must be modified for the network environment where the TS-5700 will be installed.
DOS Ethernet page or click the following link to download the WATTCP source code.
9.3 WATTCP.CFG configuration file
my_ip=192.168.0.20 // IP address of this Ethernet interface.
hostname="epc.embeddedARM.com" // Host name of this computer.
netmask=255.255.255.0 // Used to determine which IP’s are local.
gateway=192.168.0.1 // Gateway for internet access.
nameserver=192.168.0.1 // Name server for domain name lookups.
With the WATTCP.CFG file properly setup and the 10/100 base-T cable connected, you should be able to ping other nodes on the network, i.e. ‘ping www.embeddedARM.com’
Other WATTCP examples include: serial to telnet redirector, http file download, telnet server, and finger, web server with I/O control . Many more can be downloaded from the internet as freeware.
9.4 DOS TCP/IP configuration – MS Client for DOS
The Davicom Ethernet adapter has the MS Client for DOS driver available. This has been tested and found to work on Windows workgroups as well as Samba workgroups.
Contact Technologic Systems with questions.
10 PCMCIA Bridge
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10.1 Hardware
The TS-5700 uses a Texas Instruments PCI1510 single-slot CardBus controller designed to meet the PCI Interface Specification for PCI to CardBus Bridges. The PCI-to-CardBus controller supports a single PC card socket compliant with the PC Card Standard (rev. 7.2). The PC Card Standard retains the 16-bit PC Card specification defined in the PCI Local Bus Specification and defines the 32-bit PC Card, CardBus, capable of full 32-bit data transfers at 33 MHz. The TS-5700 supports both 16-bit and CardBus PC Cards, powered at 5 V or
3.3 V, as required.
The PCI1510 is compliant with the PCI Local Bus Specification, and its PCI interface can act as either a PCI master device or a PCI slave device. The PCI bus mastering is initiated during CardBus PC Card bridging transactions.
All card signals are internally buffered to allow hot insertion and removal . The PCI1510 is register-compatible with the Intel 82365SL-DF and 82365SL ExCA controllers. The PCI1510 internal data path logic allows the host to access 8-, 16-, and 32-bit cards using full 32-bit PCI cycles for maximum performance.
The PCMCIA Bridge uses IRQ10 to monitor card plug events and IRQ7 is used for the PC Card interrupt.
10.2 Software (Linux support only)
Card Services for Linux is a complete PCMCIA support package. It includes a set of loadable kernel modules that implement a version of the PCMCIA 2.1 Card Services applications program interface, a set of client drivers for specific cards, and a card manager daemon that can respond to card insertion and removal events, loading and unloading drivers on demand. It supports ``hot swapping'' of PCMCIA cards, so cards can be inserted and ejected at any time.
The current package supports many ethernet cards, modems and serial cards, several SCSI adapters, most ATA/IDE devices, and some SRAM and FLASH memory cards. All the common PCMCIA controllers are supported, so it should run just about all Linux-capable devices.
The PCMCIA CS drivers are a standard install with the following changes to /etc/pcmcia/config.opts
REMOVED:
include port 0x0100-0x04ff, port 0x800-0x8ff
exclude irq7
ADDED:
exclude irq3
exclude irq4
exclude irq5
These changes will avoid trying to allocate the x100-x4ff region, which is unavailable to PCI devices in the TS-
5700. And will force the use of IRQ7 for the PCMCIA device, which the PCMCIA Bridge chip has been programmed for in the BIOS during power up.
See /etc/pcmcia directory and the documentation on the sourceforge project page. (link below)
The home page for PCMCIA Card Services for Linux can be found @
http://sourceforge.net/projects/pcmcia-cs/
10.3 Supported Devices
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There is a very large list of devices supported by the Linux Card Services package available on the sourceforge page. Here is a list of devices tested at Technologic Systems and known to work with the TS-5700:
802.11b Wireless Ethernet adapters
Belkin F5D6020 (16-bit version not CardBus version) Netgear MA401 Orinoco Gold PC24E-H-FC Phoebe WLC010(INT)
Cellular Modem
Novatel Merlin C201 Sprint PCS Connection Card
Hard Drives
Toshiba MK5002MPL 5GB Hard Disk Drive Sandisk Compact Flash w/PCMCIA to Compact Flash Adapter
Modem
Actiontec DataLink Fax/Modem
Ethernet adapters
SoHoware ND5120-E 16-bit 10 Mbps adapter Netgear FA511 32-bit CardBus 10/100 adapter Hawking Technology 32-bit CardBus 10/100 adapter
11 SPI Bus
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11.1 Hardware
The SPI bus is a three-wire interface that allows high-speed serial communications using low-pin count peripherals. The SPI bus is a byte-oriented bus, so 16-bit transfers need to use two back-to-back byte transfer cycles.
The SPI bus is available on a 10-pin header. Tables 11.1a and 11.1b document the Header pin-outs. Additional off-board chips may be added to the SPI bus.
Warning: The TS-5700 has an eeprom using the SPI bus running at 3.3V and is not 5V tolerant. This means that any devices that are added to the SPI bus must not drive the SPI data input (pin 5) any higher than 3.3V. Alternatively, a 5V device can be added if a series resistor (470 ohm) is added to the SPI Data input line to limit the current.
There are 5 registers that control the
Elan520 SPI bus:
Control Register Address = DFCD0h TX data Register Address = DFCD1h RX data Register Address = DFCD4h Command Register Address = DFCD2h Status Register Address = DFCD3h
Table 11.1a SPI Bus
Header
Pin Description
1 SPI Data (out) 2 5V Power 3 SPI CLK (out) 4 GND 5 SPI Data (in) 6 GND 7 PIO4 (Chip Select) 8 PIO5 (Chip Select) 9 PIO6 (Chip Select) 10 PIO7 (Chip Select)
Table 11.1b
SPI Bus
Header
Pinout
2 4 6 8 10 1 3 5 7 9
12 Real Time Clock
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The TS-5700 has a standard PC compatible real-time clock (RTC) that is built into the Elan520 CPU. This clock has no battery-backup, which means it is volatile, and must be initialized after power is applied. If a non-volatile battery-backed RTC is required, the TS-5620 peripheral board can be added to provide this capability. The TS­5620 is a very low-cost option that is only 1.1 x 3.5 inches (2.8 x 9.0 cm) and uses an ST Micro M48T86PC1 module for the real-time clock function. This module contains the lithium battery, 32.768 kHz crystal, and a RTC chip with 114 bytes of battery-backed CMOS RAM. It is guaranteed to maintain clock operation for a minimum of 10 years in the absence of power.
Both the internal RTC and the TS-5620 RTC are totally compatible with the Motorola 146818 chip used in the original PC. It is located at the standard PC I/O addresses of Hex 070 and 071. The top 48 bytes (index 50h through 7Fh) are not used by the BIOS and are available for user applications. However, since the TS-5700 uses an EEPROM to make this data non-volatile, a special method must be used to make any user data non­volatile. If you wish to use this area for non-volatile storage,
The CMOS RAM that is located inside the RTC chip is used to hold all of the BIOS set-up parameters. This RAM is always non-volatile even when using the internal RTC. All of the set-up parameters are stored in a non­volatile EEPROM chip. The data stored in the EEPROM is copied into the CMOS RAM during every boot cycle. This is all totally transparent and appears to operate as a standard CMOS set-up RAM.
schematic for the TS-5620 is posted on our website. The TS-5620 design only uses two chips. This circuitry
The can be freely used on any customer peripheral board design if the battery-backed RTC feature is necessary.
contact Technologic Systems for details.
The TS-5700 internal RTC is capable of generating a square wave output function with a period of 500 mSec to 122 uSec. The TS-5620 RTC does not have access to IRQ8 and can not implement this function. The internal RTC square wave output pin is connected to IRQ8 on the processor, and can be used to generate periodic interrupts. The keypad example code uses this function to generate interrupts at a 256 Hz rate.
http://www.embeddedARM.com/old/downloads/KEYPAD.ZIP
13 Watchdog Timer
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The AMD Elan520 contains a 32-bit watchdog timer (WDT) unit that can be used to prevent a system “hanging” due to a software failure. The WDT can be programmed to cause an interrupt or a full system reset when the WDT times out allowing a guaranteed recovery time from a software error. To prevent a WDT timeout, the application must periodically “feed” the WDT by writing a “clear-count key sequence” to the Watchdog Timer Control (WDTMRCTL) register.
Bit Position Function
Bit 15 1 = Enable WDT Bit 14 1 = Generate Reset at Timeout
Bit 13 Must always be 0
Table 13a WDTMRCTL Register
0 = Generate Interrupt at Timeout
Bit 12 1 = WDT Interrupt has occurred
The WDT must be initialized with the timeout period desired. This may be as short as 0.5 mS or may be as high as 32 seconds. After the WDT has been enabled, the 32-bit watchdog counter starts counting from zero. The application software can reset this
Bits 8-11 Must always be 0 Bits 0-7 Timeout Value (See Table 4)
(Interrupt reoutine must clear this bit)
counter at any time by writing a “clear-count key sequence” to the WDTMRCTL. If this counter reaches the timeout period, then an interrupt is generated, or a system reset occurs.
If programmed to cause an interrupt, the WDT must be fed within the next timeout period or else a system reset occurs as an additional failsafe feature.
In order to load the WDTMRCTL register, a specific sequence of three word writes is required. A 3333h, followed by CCCCh, followed by the value to be loaded into the
Table 13b WatchDog
Timer Timeout Values
Bits 0-7 Timeout Value
01h 0.5 milliseconds
WDTMRCTL register must be written to the WDTMRCTL register.
02h 0.5 seconds
In order to clear the WDT counter (feeding the watchdog), a “clear-count key sequence” must be written to the WDTMRCTL register. This is a specific two word write sequence with a write of AAAAh, followed by a write of 5555h. (Writing this “clear-count key sequence” has no effect on the contents of the WDTMRCTL register)
04h 1 second 08h 2 seconds 10h 4 seconds
Typically a system reset at timeout is the preferred method for using the WDT, if you wish to have an interrupt occur before the system reset occurs (bit 14 = 0 in the WDTMRCTL Register), additional programming is required to “attach” a specific IRQ to the WDT. An interrupt service routine must also be written to handle this IRQ. Please download the
AMD
Elan SC520 user's manual or contact Technologic Systems.
When using the Linux OS, we provide a driver to initialize and “feed” the WDT. We also provide a Linux sample application program with full source.
Table 13c WatchDog Timer Memory Map
Register Memory Address
WatchDog Control (WDTMRCTL) DFCB0h WDT Counter Bits 0-15 (Read Only) DFCB2h WDT Counter Bits 16-31 (Read Only) DFCB4h WDT Interrupt Mapping DFD42h
20h 8 seconds 40h 16 seconds 80h 32 seconds
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If using DOS, the following sample of Turbo C code (real-mode DOS)
will enable the WDT with a 4 second timeout period :
int main() {
unsigned int far *wdtctrl ;
wdtctrl = (unsigned int far *) MK_FP (0XDF00, 0X0CB0);
*wdtctrl = 0x3333;
*wdtctrl = 0xCCCC;
*wdtctrl = 0xD010 ;
/* 0xD0 = Enable WDT to Reset Mode, 0x10 = 4 second timeout */
printf (“System will reset in 4 seconds”);
return 0;
}
14 LED, Jumpers and External Reset
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Table 14 Jumper Listing
Jumper Function
JP1 Automatic CMOS - CMOS memory is reset every time the system boots, IDE0 and IDE2 Comact Flash are
automatically detected and configured in the BIOS Configuration menu. JP2 Enable Serial Console - Default to COM2. (unless JP6 installed) JP3 Write Enable Drive A - Remove this jumper to write protect Flash drive A JP4 Fast Console - Console is set to 115K baud. (defaults to 9600 baud) JP5 User Jumper - Read using BIOS call or directly in I/O space. (see appendix D & E) JP6 Console on COM1 - (requires JP2 installed to enable console)
The TS-5700 has an LED available for user software. The user LED may be used for diagnostics, status messages, and simple output. When power is first supplied to the TS-5700, the user LED is immediately turned on under hardware control. Once the processor begins execution, the LED is turned off, then flashed on and off again briefly. After boot, this LED can be used for user applications. The state of the LED is complemented by any activity to the Compact Flash card. (accesses to the CF causes the LED to flicker)
The status of all jumpers except JP3, can be read at I/O location 77 (See Table 12).
BIOS interrupt functions can be used to interface software with the user LED and option jumpers. Please
see
Appendix E for further details and the utility CD for example code.
The LED can be also accessed at I/O location 77h bit 0. A Logic “1” is LED on condition.
The CF activity signal is exclusive ORed with the control bit at I/O location 77h. This causes the LED to always flicker when there is access to the CF card.
The DIO pin 12 is connected in parallel with the on-board power reset chip.
See Section 6 for details. Pulling
DIO pin 12 low will perform a ‘cold’ boot.
15 PC/104 Bus Expansion
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The PC/104 is a compact implementation of the PC/AT ISA bus ideal for embedded applications. Designers benefit from using an already-developed standard, rather than creating their own. Further, the presence of a compact form-factor PC compatible standard has encouraged the development of a broad array of off-the-shelf products, allowing a very quick time to market for new products.
The electrical specification for the PC/104 expansion bus is identical to the PC ISA bus. The mechanical specification allows for the very compact implementation of the ISA bus tailor made for embedded systems. The full PC/104 specification is available from the IEEE Standards Office under # IEEE P996.1. Basically, this bus allows multiple peripheral boards in a 3.6 inch by 3.8 inch form factor to be added in a self-stacking bus. Since the electrical specs are identical (except for drive levels) to a standard PC ISA bus, standard peripherals such as COM ports, Ethernet, video, LCD drivers, and Flash drives may be easily added using standard drivers
The TS-5700 implements a sub-set of the 8-bit or optionally the 16-bit version of the PC/104 bus. We have found this allows the support of the vast majority of PC/104 boards including all of the above mentioned examples.
IRQ3 and IRQ4 are typically used by COM2 and COM1 and are not available on the PC/104 bus. If a peripheral board must use either IRQ3 or IRQ4, it is possible to reconfigure the Elan520 registers and reassign IRQ lines.
Contact Technologic Systems for details.
Pin B19 (normally not used) has been reassigned to be a User Chip Select. This active low signal decodes the I/ O address range 140h through 15Fh, to allow for simple low-cost peripheral board designs.
All Technologic Systems 3000 and 5000 series products will support the User Chip Select feature.
Memory range C8000-CFFFF is available for custom peripheral boards to map into the memory space on the PC/104 bus.
See section 19.4 on configuring the Custom CMOS settings.
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Table 15a
Unsupported PC/104
Signals
Pin # Signal Name
B5 -5V B6 DRQ2 B7 -12V B8 ENDXFR# B9 +12V B26 DACK2#
Table 15b Supported PC/104
Signals on the 8-bit Bus
Pin # Signal Name
A1 IRQ1* A2 - A9 D7 - D0 A10 IOCHRDY A11 AEN A12 - A31 A19 - A0 A32 GND B1 GND B2 RESETDRV
Table 15c Supported signals on the optional 16-bit PC/104
Pin # Signal Name
C0 GND C1 SBHE# C2 - C8 LA23 - LA17 C9 MEMR# C10 MEMW# C11 - C18 D8 - D15 D0 GND D1 MEM16# D2 IO16# D5 IRQ12 D6 IRQ15
IRQ14 D7 (shared with CF) D8 DACK0# D9 DRQ0 D16 +5V D18, D19 GND
B3 +5V B4 IRQ9 B11 SMEMW# B12 SMEMR# B13 IOW# B14 IOR# B15 reserved * B16 reserved * B17 DACK1# B18 DRQ1 B19 user chip select# * B20 SYSCLK (8.25 MHz) B21 IRQ7 B22 IRQ6 B23 IRQ5 B24 NC B25 NC B27 TC B28 BALE B29 +5V B30 OSC (14.3 MHz)
B31 GND B32 GND
16 Loading or Transferring Files
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Two methods are available for transferring files between a desktop PC and your TS-5700: Compact Flash and Zmodem downloads. Full descriptions of each are detailed below. Other programs that use serial ports to transfer should work as well (for example, FastLynx).
16.1 Developing with the Technologic Systems TS-9500
The TS-9500 peripheral board provides full VGA video, keyboard, and mouse interfaces necessary to work within most environments. It also has a Compact Flash card that can be used even if the TS-5700 is using a Compact Flash card as well. You can transfer your development tools (e.g. Turbo C) onto the TS-9500 Compact Flash card. Now you can compile, debug, and execute right on the TS-5700 target.
16.2 Transferring files with Compact Flash
The TS-5700 removable Compact Flash card can be used to easily move files from a host system. We suggest using a low-cost SanDisk ä USB Compact Flash card interface for your host system. This is included in the TS­5700 Developer’s Kit.
For best results, we have noticed that it is best to boot the host PC with a Compact Flash card installed in the SanDisk USB Reader. The Compact Flash card can then be hot swapped (inserted or removed without rebooting the host PC).
There are two other options for connecting a Compact Flash to your host computer. A Compact Flash to PCMCIA adapter, which can map a Compact Flash as a hard drive on your laptop host computer. Or, a Compact Flash to IDE adapter, which connects to the 40 pin IDE interface on you host computer. The IDE adapter will allow you can boot to CF, run fdisk, format, etc.
16.3 Zmodem Downloads
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Using the Zmodem protocol to send files to and from the TS-5700 is simple and straightforward. The only requirement is a terminal emulation program that supports Zmodem, and virtually all do. If you are using Windows 95 or later for your development work, the HyperTerminal accessory works well.
To download a file to the TS-5700 from your host PC, execute DL.BAT at the DOS command line on the TS­5700 (while using console-redirection from within your terminal emulator) and begin the transfer with your terminal emulator. In HyperTerminal, this is 'Send File...' from the 'Transfer' menu.
To upload a file from the TS-5700 to your host PC, execute UL.BAT <FILENAME> at the DOS command line on the TS-5700 and start the transfer in your terminal emulator. Many emulators, HyperTerminal among them, will automatically begin the transfer themselves.
Occasionally there may be errors in transmission due to background solid-state disk operations. This is not a problem -- Zmodem uses very accurate CRC checks to detect errors and simply resends bad data. Once the file transfer is complete the file is completely error free.
For best results when using HyperTerminal, the hardware handshaking must be enabled in HyperTerminal. To increase the download speed you could also use a ram disk on the TS-5700 to receive the download file, and then copy to the Flash drive.
To declare a ram disk insert this line into the config.sys file: device=\dos\vdisk.sys /kbtouse=1024
Please note that the utility used to perform Zmodem file transfers on the TS-5700 side is called DSZ, produced by Omen Technologies. DSZ is shareware -- it is not free. If you decide to use it, you are legally obligated to pay Omen Technologies. Currently the cost is $20. Further info is available in the DSZ zip file located on the utility disk, or contact
Omen Technologies.
17 Debugging
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There are two main methods for debugging on the TS-5700: using the integrated BIOS debugger (INT3) and/or using your development tool's debugger (this usually requires the
17.1 Integrated BIOS Debugger
To provide simple, direct access to the TS-5700 hardware, the system BIOS has an integrated debugger that can perform standard low-level debugger functions. The debugger allows you to perform operations such as disassemble code, display and alter the contents of memory, write to and read from I/O ports, and single-step through or breakpoint code. The debugger is not intended for use as the only debugging tool for applications, but it can be a real lifesaver when you need interactive, direct access to hardware.
The BIOS debugger can be entered by any of several methods:
The debugger hooks the CPU exception vectors in case a divide by zero occurs, an invalid opcode is
executed, or an INT 3 instruction is executed, for example. By placing an INT 3 instruction in your application code the debugger will automatically be invoked. To resume, type the 'G' command to "GO", or continue on with the rest of initialization.
From DOS-ROM by typing ‘INT3’ at the command prompt. If the full command.com interpreter is running,
this is an internal command. If only mini-command.com is running, this will execute a small utility that simply contains an ‘INT 3’ instruction.
From the BIOS Setup main menu (started by typing ‘ctrl-C’ during the BIOS POST), the ENTER SYSTEM
BIOS DEBUGGER selection will enter the debugger. After use, typing the ‘G’ (go) command will return to
the SETUP screens.
As a boot action, as a last-ditch effort if the operating system cannot be booted from the appropriate
drives or out of ROM.
TS-9500 video and keyboard).
A complete discussion of debugger commands is available in the Integrated BIOS Debugger Reference Manual, included on the TS-5700 Utility Disk and also available from the
Technologic Systems web site. Entering ‘?’ will
list all available commands, and a ‘g’ (go) will return execution to the point where the debugger was called.
17.2 Using other debuggers
The Turbo C debugger can be used on the target board using the TS-9500 video and keyboard interfaces. Any other standard PC software debugger of your choice should work just as well.
18 Video, Keyboard, and Console Redirection
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The TS-5700 has no video controller or keyboard interface. This was done to keep the board size small and the
cost low. For applications that require it, a PC/104 video board can be added to the system easily. Technologic Systems recommends the Flash. This is extremely useful in speeding up the development phase and shortening the time to market. With the TS-9500 installed, developers can develop right on the target board with any compiler or debugger of their choice (such as the Turbo C compiler or debugger).
Without a video board in the system, the TS-5700 can redirect all console activity to the COM2 serial port. Simply connect an ANSI terminal (or emulator) to COM2 with a null modem cable, using serial parameters of 9600 baud, 8 data bits, no parity, 1 stop bit, and make sure jumper JP2 is installed. (JP4 will change the console to 115.2K Baud) All text information that would normally be displayed on a video screen is now displayed in your terminal window, and any serial data sent to the TS-5700 is seen as standard keyboard input by programs.
Please note that the console redirection support is limited by the fact that there is no actual video or keyboard hardware on the TS-5700. Programs must use the standard BIOS routines for display and keyboard input, which are rerouted to the serial port. Any program that accesses the video or key-board hardware directly will not work. Keyboard redirection is limited simply because most of the extended keys on the keyboard (function keys and Alt key in particular) are not sent by the terminal emulator. For these reasons, the console redirection feature is meant more for system development, testing, and field repair, rather than as the primary user interface for a finished product.
TS-9500, a PC/104 peripheral board with video, keyboard, mouse, and Compact
If your application uses COM2, removing the jumper JP2 easily disables console redirection.
If you wish to use a different serial port and / or baud rate for the console, the
CONSOLE.EXE utility allows
these modifications to be made. Please see the appropriate application notes for further details, available on the utility CD.
ftp://ftp.embeddedarm.com/old/old-software-pages/Manuals/ap-100.pdf
If a video board is installed on the PC/104 bus, the video BIOS on the graphics card will automatically replace the standard video routines (INT10h), disabling both the LCD display and the console redirection to COM2, regardless of the state of jumper JP2. If a video board is present, all console input is disabled and the TS-5700 will only accept input from a standard PC keyboard.
If LCD and/or Matrix keypad is enabled, the console must be directed to standard I/O. If a TS-9500 is present, with video/keyboard enabled the standard output will be directed to video, even if the LCD is enabled, if the Matrix keypad is enabled the PC keyboard and the Matrix keypad will work at the same time.
19 System BIOS Setup Screens
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19.1 Main CMOS Configuration Screen
The BIOS setup screen allows the user to configure the BIOS settings, which are then stored in battery-backed “CMOS” memory in the Real Time Clock. The BIOS setup screen also allows entry into the system debugger, manufacturing mode and formatting of the integrated Flash disks.
To enter the BIOS Setup screen, hit Ctrl-C during the memory test. If you have a TS-9500 installed with video/ keyboard enabled hit the Delete key during the memory test.
When navigating the BIOS setup screen with the console on COM2, the arrow keys do not work. Use the Ctrl-X, Ctrl-E and Tab keys to navigate, use the Space bar, ‘+’ and ‘-‘ keys to change fields. Use ESC to back out of a menu.
NOTE: Jumper JP1 will force a reset of the CMOS memory on every boot, any changes will be lost.
“Basic CMOS Configuration” Setup disk drives, drive mapping, boot order, misc. “Custom Configuration” Setup custom features for Technologic Systems’ boards. “Shadow Configuration" Setup ROM BIOS shadowing in RAM. “Start System BIOS Debugger" Enter debugger, see section 15. “Start RS232 Manufacturing Link” Enter manufacturing mode to link with host PC. “Format Integrated Flash Disk” Low-level format of Flash drives A: and B: “Reset CMOS to last known values” Resets changes since last boot. “Reset CMOS to factory defaults” Reset to settings as shipped from Technologic Systems. “Write to CMOS and Exit” Save all changes made, and reboot.
System Bios Setup - Utility v4.3
(C) 2000 General Software, Inc. All rights reserved
>Basic CMOS Configuration
Custom Configuration
Shadow Configuration
Start System BIOS Debugger
Start RS232 Manufacturing Link
Format Integrated Flash Disk
Reset CMOS to last known values
Reset CMOS to factory defaults
Write to CMOS and Exit
Exit without changing CMOS
<Esc> to continue (no save)
www.gensw.com
19.2 Basic CMOS Configuration
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The “Basic CMOS Configuration” screen allows setup of the Compact Flash or IDE drives, Drive Assignment mapping and Boot Order, as well as Time, Date and misc. keyboard and memory test settings. The default settings for the TS-5700 are show below.
System Bios Setup - Basic CMOS Configuration
(C) 2000 General Software, Inc. All rights reserved
Typematic Delay :
DRIVE ASSIGNMENT
ORDER:
Drive A: 5300
Flash A:
Drive B: 5300
Flash B:
Drive C: Ide 0/
Pri Master
Drive D: (None)
Drive E: (None)
Drive F: (None)
Drive G: (None)
Drive H: (None)
Drive I: (None)
Drive J: (None)
Drive K: (None)
Boot Method:
Boot Sector
Date:>Dec 14, 2001
Time: 09 : 56 : 21
NumLock: Disabled
BOOT ORDER:
Boot 1st: Drive C:
Boot 2nd: Drive A:
Boot 3rd: DOS-ROM
Boot 4th: (None)
Boot 5th: (None)
Boot 6th: (None)
250 ms
Typematic Rate : 30
cps
Seek at Boot : None
Show "Hit Del" :
Enabled
Config Box : Enabled
F1 Error Wait :
Enabled
Parity Checking :
(Unused)
Memory Test Tick :
Enabled
Test Above 1 MB :
Enabled
Debug Breakpoints:
Enabled
Splash Screen :
(Unused)
FLOPPY DRIVE TYPES:
Floppy 0: Not installed
Floppy 1: Not installed
IDE DRIVE
GEOMETRY: Sect Hds
Cyls
Ide 0: 2 =
AUTOCONFIG,
PHYSICAL
Ide 1: Not
installed
Ide 2: Not
installed
Ide 3: Not
installed
^E/^x/<tab> to select or +/- to modify
<Esc> to return to main menu
Memory
Base:
640KB
EXT:
31MB
The factory defaults shown will first attempt to boot from Compact Flash as Drive C:. If no CF is installed the
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BIOS will then boot from Drive A:. If a CF is installed, but it is not desired to boot from this drive, change the “Boot 1st” setting to “Drive A:”.
In order for the Compact Flash to function properly as an IDE hard drive, the IDE DRIVE GEOMETRY must be set to “AUTOCONFIG, PHYSICAL” and the DRIVE ASSIGNMENT ORDER must be set to “Ide 0/Pri Master” or “Ide 2/Sec Master”.
In this example the Compact Flash socket on the TS-5700 (Ide 0) is set as “AUTOCONFIG, PHYSICAL” and mapped so that drive C: is assigned to “Ide 0/Pri Master”. This drive is also set as the 1st boot device.
19.3 Adding a TS-9500 with Compact Flash
A TS-9500 may be added to the system, this board has its own Compact Flash socket which may be set to Primary Master or Secondary Master using the DIP switches. If the TS-9500 CF is set to Primary Master (DIP switch 5 on), then no CF card may be installed in the TS-5700 CF socket and the CMOS settings should be exactly as shown above. The TS-9500 CF card will be mapped as Drive C: and will be the boot drive. If the TS­9500 CF card is set to Secondary Master (Ide 2), then the TS-5700 CF socket may have a CF installed as Primary Master (Ide 0). To configure the TS-9500 as Secondary Master (DIP switch 5 off), change the IDE DRIVE GEOMETRY for “Ide 2” to “AUTOCONFIG, PHYSICAL” and change the DRIVE ASSIGNMENT for Drive D: to “Ide 2, Sec Master”.
19.4 Custom CMOS Configuration
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System BIOS Setup - Custom Configuration
(C) 2000 General Software, Inc. All rights reserved
Write Buffer
CPU speed
GP Bus Timings
:>Disabled
: 133 MHz
: Normal
Cache Mode
C8000-CFFFF maps to
PNP IO Port 0A79h
: Write-Through
: PC/104 Bus
: PCI Bus
^E/^X/<Tab> to select or +/- to modify
<Esc> to return to main menu
Write Buffer When write buffering is ‘Enabled’ the internal 16K byte L1 cache is used to allow zero wait state writes to SDRAM . This setting defaults to Disabled and may be ‘Enabled’ by the user to optimize performance.
Download the
AMD Elan SC520 user's manual and refer to section 11 for more information on write buffering.
Cache Mode When set to Write-Through all writes to SDRAM will be updated in the internal cache as well as the SDRAM. When set to Write-Back only the internal cache is updated, the cache controller will determine when to flush cache to SDRAM. This setting defaults to ‘Write-Through’ and may be set to ‘Write-Back’ by the user to optimize performance.
Download the
AMD Elan SC520 user's manual and refer to section 8.4.2.2 for more information on cache mode.
CPU Speed This will set the clock speed for the CPU core. This can be set to ‘100 MHz’ or ‘133 Mhz’. The default speed for commercial temperature products is 133 MHz, the default for industrial temperature products is 100 MHz. Changing this setting will not affect industrial temperature products because they are specified by AMD with a maximum clock speed of 100 MHz.
C8000-CFFFF maps to This setting allows a block of memory space to be mapped to either the PC/104 bus or the onboard SDRAM. This setting defaults to PC/104 bus.
GP Bus Timings This setting allows the PC/104 bus timing to be stretched to allow slower devices to operate. If Plug-N-Play boards are installed, or in the case of older PC/104 peripheral boards setting this entry to ‘Slow’ may be desired. This setting defaults to ‘Normal’ which has been tested and found to work with the vast majority of boards.
PNP IO Port 0xA79 This setting allows the Plug-N-Play configuration address to be mapped to the PC/104 bus. The I/O space above 0x400 is mapped to the PCI bus by default. If a Plug-N-Play device is connected to the PC/104 bus change this setting to ‘GP Bus’.
19.5 Shadow Configuration
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System BIOS Setup - Shadow/Cache Configuration
(C) 2000 General Software, Inc. All rights reserved
Shadowing
Shadow 16KB ROM at C400
Shadow 16KB ROM at CC00
Shadow 16KB ROM at D400
Shadow 16KB ROM at DC00
Shadow 16KB ROM at E400
Shadow 16KB ROM at EC00
:>Chipset
: Enabled
: Disabled
: Disabled
: Disabled
: Enabled
: Enabled
Shadow 16KB ROM at C000
Shadow 16KB ROM at C800
Shadow 16KB ROM at D000
Shadow 16KB ROM at D800
Shadow 16KB ROM at E000
Shadow 16KB ROM at E800
Shadow 16KB ROM at F000
: Enabled
: Disabled
: Disabled
: Disabled
: Enabled
: Enabled
: Enabled
^E/^X/<Tab> to select or +/- to modify
<Esc> to return to main menu
The Shadow Configuration menu allows BIOS extension ROMs to be copied to SDRAM in upper memory regions to reduce access times. Execution directly from ROM is significantly slower than executing from SDRAM. The region from C000-C7FF is usually reserved for the video BIOS extension in a PC compatible system, shadowing is enabled to optimize the video BIOS functions. The region from E000-FFFF contains the embedded BIOS code in the TS-5700. This region is shadowed to optimize BIOS code execution and to allow reprogramming of the BIOS while the BIOS is executing out of SDRAM. Other regions can be shadowed as required by specific applications.
20 Feedback and Updates to the Manual
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To help our customers make the most of our products, we are continually making additional and updated resources available on the Technologic Systems web site ( application notes, programming examples, and updated software and firmware.
what's new!
When we are prioritizing work on these updated resources, feedback from customers (and prospective customers) is the number one influence. If you have questions, comments, or concerns about your TS-5700 Embedded PC,
please let us know.
www.embeddedARM.com). These include manuals,
Check in periodically to see
Appendix A - Board Diagram and Dimensions
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To view a larger version, click on the above image, or download the PDF
Appendix B - Operating Conditions
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Operating Temperature:
Operating Humidity:
0 to 70° C Extended temperature range is optional
0 to 90% relative humidity (non-condensing)
Appendix C - System Memory Map
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Table C TS-5700 Memory Map
Resource Starting Address
hex
Starting Address
decimal
Size
Linear Flash Chip 9400000h 148M 2M Unused Extended Memory (RAM) 100000h 1M 15M or
31M or 63M
BIOS
E0000h 896k 128k
(Shadow RAM) Elan520 Configuration Registers DF000h 892k 4k PC/104 Bus D8000h 864k 28k NV SRAM D0000h 832k 32k PC/104 Bus or SDRAM
C8000h 800k 32k
(user configurable in CMOS setup, see sec. 17.4) PC/104
C0000h 768k 32k
(typically video BIOS) PC/104
A0000h 640k 128k
(typically video memory) Lower Memory
00000h 00000 640k
(RAM)
Appendix D - System I/O Map
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The following table lists the I/O addresses used by the system. This is all a very standard PC compatible I/O map. All other I/O locations from 100h through 3FFh are available on the PC/104 expansion bus.
The I/O ranges of 100h – 13Fh and 200h – 26Fh are excellent choices for PC/104 peripheral board I/O usage. When designing a custom PC/104 peripheral board, a User Chip Select is available on PC/104 Bus pin B19 that decodes the I/O range 140h – 15Fh. This can make for a simpler and more cost-effective design.
Table D1 700 DIO anTS-5d Control Registers
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I/O Address R/W Resource
74h Read Product Code
20h = Product Code for TS-5700
75h Read Bit 0 = Always set
Read Bit 1 = RS-485 Option Read Bit 2 = Always zero R/W Bit 6 = Enable RTS for RS-485 R/W Bit 7 = Enable Automatic RS-485
Table D2 TS-5700 I/O Map
76h Read Bit 0 = External Reset Option
Read Bit 1 = Industrial Temp. Range Option
77h R/W Bit 0 = LED (1 = ON)
Read Bit 1 = JP1 Read Bit 2 = JP2
- Bit 3 = Reserved Read Bit 4 = JP4 Read Bit 5 = JP5 Read Bit 6 = JP6
78h - Reserved 79h R/W
COM3-4 IRQ Control Register
Bit 1-0 00 = No IRQ Bit 1-0 01 = Com3=IRQ5, COM4=IRQ6 Bit 1-0 10 = COM3&COM4 share IRQ5 Bit 1-0 10 = COM3&COM4 share IRQ6
Bit 2 set = Timer2 drives DIO_11 7Ah - Reserved 7Bh - Reserved 7Ch - Reserved 7Dh R/W
Control Register for DIO and LCD
Bit 0 = Direction of DIO_0 - DIO_3
Bit 1 = Direction of DIO_4 - DIO_7
Hex Address Resource
400h - FFFFh PC/104 Bus
(not recommended for use) 3F8h - 3FFh COM1 3F6h - 3F7h Primary IDE (Compact Flash) 3E8h - 3EFh Reserved for COM3 3B4h - 3DFh Video (TS-9500) 376h - 377h Secondary IDE (TS-9500) 2F8h - 2FFh COM2 2E8h - 2EFH Reserved for COM4 278h - 27Ah Reserved for LTP1 1F0h - 1F7h Primary IDE (Compact Flash) 198h - 19Fh Registers on TS-9500 195h - 197h Reserved for A/D Converter 170h - 177h Secondary IDE (TS-9500) 140h - 15Fh User Chip Select (PC/104 Bus) 080h - 0FFh Internal Elan520 Peripherals 074h - 071h DIO and Control Registers 072h - 073h LCD Port 070h - 071h RTC and CMOS Memory 060h - 064h Keyboard Controller (TS-9500) 000h - 05Fh Internal Elan520 Peripherals
Bit 2 = Direction of LCD_0 - LCD_3 Bit 3 = Direction of LCD_4 - LCD_7 Bit 4 = Enable LCD Mode Bit 5 = Always Logic "1" Bit 6 = Always Logic "0"
Bit 7 = Always Logic "1" 7Eh R/W DIO_0 - DIO_7 (Bits 0-7) 7Fh R/W DIO_8 - DIO_11 (Bits 0-3)
Appendix E - BIOS Interrupt Functions
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We have extended the standard BIOS interrupts with several functions that simplify interfacing with the TS-5700 hardware.
Many books are available with detailed information on using interrupts with just about any language. Example code is also available on the utility disk.
You can download the complete “
User’s Manual with BIOS Interrupt Reference” from the Technologic Systems
website.
Int 15h / Function B000h - Technologic Systems BIOS information
This function is mostly for our own internal use, but may be useful for user programs as well. For example, your program could have debugging code that executes on your desktop machine, but does not when the program is executing on the TS-5700.
ENTRY:
AX = B000h
EXIT:
CY = 0 (carry flag)
AH = 0
AL = SP_VERSION
For standard versions of the BIOS, this is 0. An 'SP number'
is assigned when custom modifications are made to the BIOS
for a client, and it is returned in this register. Contact
us for further information. (00h for standard products
BH = BIOS Version, Major Number.
E.g. If the current BIOS version is 2.40, the register will
contain 02h.
BL = BIOS Version, Minor Number.
E.g. If the current BIOS version is 2.40, the register will
contain 28h (28h = 40 decimal).
CH = Base Flash Memory Size / 512kB
The TS-5700 is available with 1024kB of base Flash memory
standard, but this can be increased to 2048 KB for custom
orders. These would be returned as 02h or 04h, respectively.
CL = 50h
This is the hardware model number (50h = 80 decimal).
DX = Always returns: 'TS' (5453h)
Int 15h / Function B010h - LED Control
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This function is used to turn the board LED on and off. You can also invert the LED, i.e. if the LED is off, it will be turned on, and if it is on it will be turned off.
ENTRY:
AX = B010h
BH = 00 - LED off.
BH = 01 - LED on.
BH = 81 - LED invert.
EXIT:
CY = 0 (carry flag)
AH = 00
Int 15h / Function B042h – Alphanumeric LCD Support
This routine enables and disables the console on the LCD interface. It supports all LCD displays sized 2 x 40 or smaller using a Hitachi HD44780 controller.
ENTRY:
AX = B042h
BH = 00 - Disable LCD
BH = 01 - Enable LCD
BH = 02 - Return current LCD status
EXIT:
CY = Set if error, else clear if success (carry flag)
AH = 00 - No Error / LCD initialized OK
BH = 00 - LCD currently disabled / Not present
BH = 01 - LCD currently enabled and running
Int 15h / Function B040h – Matrix Keypad Support
This function is used to enable and disable support for the matrix keypad. When enabled, the RTC periodic interrupt (IRQ8 / INT70h) is enabled at 256 Hz and hooked to the keypad scanning routine. Disabling the keypad reverses this process – IRQ8 is turned off, and INT70h is returned to the original standard BIOS function. The default translation table consists of the following: 0 - 9, A - D, *, and # (# returns the scan-code for Carriage Return). A custom translation table is 16 words long, where each word is a scan code / ASCII pair for a key. Information on scan codes can be found in books on IBM PC hardware. Example programs are included on the utility disk.
ENTRY:
AX = B040h
BH = 00 - Disable matrix keypad
BH = 01 - Enable matrix keypad
BH = 11 - Enable matrix keypad with a custom translation table
CX = Translation table segment (if BH = 11)
DX = Translation table offset (if BH = 11)
EXIT:
CY = 0 (carry flag)
AH = 00
See Section 8 for further details.
Int 15h / Function A1h – Console I/O Redirection
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This function specifies the device that will be used by the BIOS to direct console input (INT 16h) and console output (INT 10h). If the LCD or Matrix keypad is to be used as the console, you must also call the LCD and/or Matrix keypad BIOS function to enable them.
ENTRY:
AX = A1h
BH = 00 - Console is directed to Standard I/O. (VGA/keyboard or LCD/Matrix)
BH = 01 - Console is redirected to COM1
BH = 02 - Console is redirected to COM2
BH = 03 - Console is redirected to COM3
BH = 04 - Console is redirected to COM4
EXIT:
CY = 0 if success, set if failure (carry flag)
AH = 00 if no error, 86h if no supported by BIOS
Int 15h / Function B020h - Jumper Pin Status
This function returns the status of the option jumpers in register BX according to the list below.
ENTRY:
AX = B020h
EXIT:
CY = 0 (carry flag)
AX = 0
BX = Jumper Pin Status. If Bit X = 1, the jumper is installed.
Table E Int15h/Function B020h register BX return
values
BX Bit Jumper Description
0 JP1 Auto CMOS configuration 1 JP2 Console Redirected to COM port 2 JP3 Write enable Flash A: 3 JP4 Console set to 115K baud 4 JP5 User definable 5 JP6 Console to COM1
Appendix F - Using a Higher Rate (10x) Baud Clock
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The COM1 and COM2 serial port baud rate generator clock can be independently switched between either the standard 1.8432 MHz clock or a ten times rate of 18.432 MHz clock.
Changing to the 10x rate allows baud rates higher than 115.2 kbaud (such as 230.4 kbaud or 1152 kbaud), as well as, non-standard lower baud rates (such as 24 kbaud).
The baud rate clock for each COM port is controlled by bit 2 in the UART Control Register (UART1CTL and UART2CTL):
UART1CTL @ DFCC0h UART2CTL @ DFCC4h
Clearing bit 2 to a “0” will change the clock to the 10X rate.
NOTE: You must not modify the other bits of this register. You must use a read-modify-write procedure to change these bits.
The following code written in Turbo C provides an example for changing COM1 to run at a 10X Baud rate:
int main () {
unsigned char far *comreg;
unsigned char comvalue;
comreg=(unsigned char far *) MK_FP (0xDF00, 0xCC0);
comvalue = *comreg; /* Load Register */
comvalue = comvalue & 0xFB /*Modify it*/
*comreg = comvalue; /*Write it out*/
return 0;
}
Appendix G - Further References
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Technologic Systems Web Site
http://www.embeddedARM.com/
AMD Elan SC520 user's manual may be found at:
ftp://ftp.embeddedarm.com/old/downloads/Components/520_user.pdf
Crystal CS8900A Ethernet Controller Overview may be found at:
ftp://ftp.embeddedarm.com/old/downloads/Components/8900a.pdf
Dallas Semiconductor DS12887 Data Sheet
ftp://ftp.embeddedarm.com/old/downloads/Components/12887.pdf
Intel 386EX User's Guide
http://developer.intel.com/
Maxim Integrated Products
http://www.maxim-ic.com/
Omen Technologies
http://www.omen.com/
PC/104 Consortium Web Site
http://www.pc104.org/
Waterloo TCP/IP Software (WATTCP)
http://www.wattcp.com/
Appendix H - Manual Revisions
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Date of Issue/Revision Revision Number Comments
04-22-04 1.0 Initial release 11-15-04 1.1 Overall clean-up
9-23-05 1.2 Minor error revision
7-24-08 1.3 Fixed broken web links
5-29-09 1.4 Updated Mailing Addr.
Contact Information
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Technologic Systems
http://www.embeddedARM.com
16525 East Laser Drive Fountain Hills, AZ 85268 TEL 480.837.5200 FAX 480.837.5300
support@embeddedARM.com
email:
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