The P55TV2 mainboard is a high performance system hardware based on
Intel Pentium processor and is equipped with four PCI slots, four standard
ISA slots, Ultra I/O controller and dual port PCI-IDE connectors for the
future expansion. The hardware dimension is 220mm x 260mm with a fourlayer-design technology.
Specification
Intel 82430VX PCIset chipset.
Intel Pentium Processor, Pentium Processor with MMX technology,
AMD K5/K6 and Cyrix M1/M2 operating at 90 ~ 266 MHz with 321 ZIFsocket 7 provides scalability to accept faster processors in the future.
Supports up to 128 MegaBytes of DRAM (a minimum of 8 MB) on board
(72 Pins SIMM x 4, 168 Pins DIMM x 2). BIOS will autometically detect
and configure FP DRAM, EDO DRAM and SDRAM (Refer to Chapter 23, System Memory Configuration).
R
R
R
TM
Supports Onboard Pipelined Burst synchronous L2 Write Back Cache.
The cache memory combination can be 256KB/512KB (32KB*32 and
64KB*32 SRAM, respectively).
Supports four 16 bits ISA slots, four 32 bits PCI slots, and provides two
independent high performance PCI IDE interfaces capable of supporting
PIO Mode 3 and Mode 4 devices. The P55TV2 supports four PCI Bus
Masters and a jumperless PCI INT# control scheme which reduces configuration confusion when plugging in PCI I/O controller card(s).
Supports AT API (e.g., CD-ROM) devices on both IDE interfaces.
Supports 1 floppy port, 1 parallel port (EPP,ECP port), 2 serial ports
(16550 Fast UART compatible) and 2 USB ports.
Supports a PS/2 style mouse and standard AT style keyboard connectors.
Supports Award Plug & Play BIOS. The BIOS is stored in Flash EPROM
form. It provides better upgradability for the system.
Supports CPU Hardware sleep and SMM (System Management Mode).
The P55TV2 utilizes a Lithium battery which provides environmental
protection and longer battery life.
Page 2
1-2P55TV2
BIOS
P55TV2 Layout
<
JP3
JP2
W83977
1
CN1
PRINTER
USB Conn.
COM2
1
K/B
J1
CONN.
Power Conn.
COM1
JP5
13
26
2 1
JP6
Note : Means Pin 1
GND
8 7
HD-LED TB-LED G-LEDRESETSLEEPSPEAKER KEYLOCK
1
14
+12V
GND
J3
Socket 7
PCI#4
PCI#3
Intel
82371SB
PCI#2
82437VX
J2
PCI#1
Intel
FDD CONN.
SIMM 3
SIMM 4
Secondary IDE
Primary IDE
BANK0 BANK1
64
K*32
64K*32
SIMM 1
SIMM 2
DIMM 2
82438VX
82438VX
DIMM 1
1 2
82438
7 8
JP1
Figure 1-1
Page 3
Hardware Design 2-1
Chapter 2
Hardware design
2-1 Overview
The P55TV2 is designed with Intel 82430VX PCIset chipset which is developed by
INTEL Corporation to fully support Pentium Processor PCI/ISA system. The Intel
82430VX PCIset chipset provides increased integration and improved performance
designs. The chipset provides an integrated IDE controller with two high performance
IDE interfaces for up to four IDE devices (hard devices, CD-ROM device, etc). The
PnP Ultra I/O controller provides the standard PC I/O functions including: floppy
interface, two 16 Byte FIFO serial ports and one EPP/ECP capable parallel port. The
P55TV2 layout is shown in the previous page for user's reference. Care must be
taken when inserting memory modules, inserting CPU or even plugging PCI card into
the associated slots to avoid damaging any circuits or sockets on board. A cooling
fan is strongly recommended when installing P54C/P54CTB/P55C/K5/K6/6x86/6x86L
processor due to possible overheat.
The P55TV2 supports a minimum of 8MB of System Memory and a maximum of
128MB while L2 Cache can be 256KB/512KB synchronous SRAM Onboard to
increase system performance (Refer to Page 2-10 Cache Memory Configuration
for the details).
R
The P55TV2 supports standard Fast Page, EDO (Extended Data Out or Hyper Page
Mode) or synchronous DRAM. The P55TV2 provides four 72-pin SIMM and two
168-pins DIMM sites for memory expansion. Each socket supports 1M x 32(4MB), 2M
x 32(8MB), 4M x 32(16MB), and 8M x 32(32MB) single-sided or double-sided memory
modules. The memory timing requires 70 ns Fast page devices or 60 ns EDO DRAM.
Memory parity generation and checking are not supported. (DRAM Modules may be
parity[x 36] or non-parity[x 32].
The P55TV2 supports Onboard two PCI IDE connectors, and BIOS detects IDE
harddisk type automatically.
The P55TV2 supports Award Plug & Play BIOS for ISA and PCI cards. The BIOS is
located in Flash EPROM which is a technology to easily revise/upgrade BIOS
through software.
TheP55TV2 has been designed with Baby AT form-factor. The mainboard layout is
shown in Figure 1-1.
Page 4
2-2 P55TV2
2-2 Connectors and Jumpers
This section describes all of the connectors and jumpers built into the mainboard.
Please refer to Figure 1-1 (page 1-2) for the location of each connector and
jumper. The following figures shows connector and jumper setting. means
connecting to pins 1&2 and means connecting to pins 2&3.
means setting jumpers with two pins open, and means setting
jumpers with two pins close.
J2 KeyLock - Keyboard lock switch & Power LED connector.
1
1.Power LED(+)
2.N/C
3.GND
4.Keylock
5
5.GND
Speaker - connect to the system's speaker for beeping
7. Speaker
8. N/C
9. GND
10. VCC
Reset - Closed to restart system
Sleep/Resume switch : Closed to enter sleep mode
(A keystrobe or mouse movement will instantly "wake up".)
+
+
Turbo LED indicator - LED ON when higher speed is selected
+
1 3 J3 The Power Supply (+12V) of the CPU Cooling FAN
Power Saving LED indicator - LED ON when system is in any
saving mode
Harddisk LED indicator - LED ON when Onboard PCI IDE
Harddisks activites
1.GND
2.+12V
3.GND
Page 5
1J1PS/2 MOUSE CONNECTOR
1 . Data (Red Wire)
2 . Clock (Blue Wire)
3 . GND (Green)
4 . NC
5
5 . VCC (Yellow)
1J4IrDA/ASK IR CONNECTOR
1 . VCC
2 . NC
3 . IRRX
4 . GND
5
5 . IRTX
1 2
CN1USB CONNECTOR
Reserved for USB port Adapter
(refer to APPENDIX B:I/O Connectors)
Hardware Design 2-3
16 15
1 2
JP1DIMM Working Voltage Selection
1-2, 3-4 : 5V
5-6, 7-8 : 3.3V (Default)
(Refer to 2-4 : Memory Configuration for the detail)
7 8
JP2EPROM BIOS Selection
1
1-2 : 5V Flash ROM (Default)
3
JP3BIOS Flash Mode Selection
1
2-3 : 12V Flash ROM
1-2 : Normal operation (Default)
3
2-3 : BootBlock Flash
Page 6
2-4 P55TV2
JP5 : CPU Clock Rate Selection (Single Jumper)
CPU
Pentium Bus Freqency
Pentium MMX x Cyrix 6x86(L) / 6x86MX
1 14
13 26
AMD K5 / K6 Multiplier IBM 6x86(L) / 6x86MX
JP5
1-14 90MHz60MHz x 1.52-15 100MHz66MHz x 1.5
3-16 120MHz60MHz x 2 6x86/L-PR150
4-17 133MHz66MHz x 2 6x86/L/MX-PR166
5-18 150MHz60MHz x 2.5 6x86MX-PR166
6-19 166MHz66MHz x 2.5 6x86MX-PR200
7-20 188MHz75MHz x 2.5 6x86MX-PR233
8-21 200MHz66MHz x 3 6x86MX-PR233
9-22 225MHz75MHz x 3 6x86MX-PR266
10-23 233MHz66MHz x 3.5 6x86MX-PR266
11-24 266MHz66MHz x 4
*
12-25 110MHz55MHz x 2 6x86/L-PR133
13-26 150MHz75MHz x 2 6x86/L/MX-PR200
*
*
*
*
These jumper settings are reserved for the future
*
CPU versions. when the future CPUversions are
ready and suitable for this mainboard, these jumper
settings will be correctly updated.
JP6 : CPU Vcore voltage selection : For Pentium MMX Processor, AMD K6
and Cyrix 6x86L/MX
1 2
1-2 : 2.8V for Pentium MMX Processor and Cyrix 6x86L
3-4 : 2.9V for AMD K6-PR2-166/200 and Cyrix 6x86MX
5-6 : 3.2V for AMD K6-PR2-233/266
7-8 : 3.5V for Pentium, AMD K5 and Cyrix 6x86
7 8
Page 7
Hardware Design 2-5
2-3
Real Time Clock Battery Replacement
The battery can be replaced with an equivalent coin lithium battery
such as Sanyo / Panasonic CR2032. Please follow the following steps to
replace the battery.
1
2
3
4
1.Remove
2.Insert
+
+
+
+
1
2
3
+
+
+
Page 8
2-6 P55TV2
2-4 System Memory Configuration
The P55TV2 supports different types of settings for the system memory. The
memory configuration does not need jumper or hardware setting. The following
tables provide all possible memory combinations.
NOTE :1.The P55TV2 supports both Fast Page DRAM and EDO DRAM SIMMs,but
they cannot be used in the same memory bank.
2.The KEY ZOOM of the DIMM socket is 3.3V/Unbuffered
DRAM chip
LEFT KEY ZONECENTER KEY ZONE
(UNBUFFERED)
(3.3 V DRAM)
Page 9
Hardware Design 2-7
The P55TV2 supports two 168-pin DIMM module sockets to extpand system
memory size.You can install (3.3V/Unbuffered) Fast Page, EDO or
Synchronous DRAM. Besides, to support 5V FP and EDO DRAM with DIMM
socket, the P55TV2 provides JP1 to allow user using 3.3V/Unbuffered DIMMmodule with 5V FP and EDO DRAM chips. The setting of the JP1 as follow:
1 2
JP1DIMM Working Voltage Selection
1-2, 3-4 : For 5V FP and EDO DRAM
5-6, 7-8 : For 3.3V FP, EDO and Synchronous DRAM
7 8
When you plug a DIMM module into a 168-pin dual readout socket, you must
make sure that the key zoom of the DIMM module is 3.3V/Unbuffered and
supports Intel Pentium Processor System.
R
Memory Configuration Table 1
4M x 2 (8 MB)
4M x 2 (8 MB)
4M x 2 (8 MB)
4M x 2 (8 MB)
4M x 2 (8 MB)
8M x 2 (16 MB)
8M x 2 (16 MB)
8M x 2 (16 MB)
8M x 2 (16 MB)
8M x 2 (16 MB)
16M x 2 (32 MB)
16M x 2 (32 MB)
16M x 2 (32 MB)
16M x 2 (32 MB)
16M x 2 (32 MB)
32M x 2 (64 MB)
4M x 2 (8 MB)
16M x 2 (32 MB)
16M x 2 (32 MB)
16M x 2 (32 MB)
Note :
1, Assume all DRAM and SDRAM in Table 5 are single-side.
2, The P55TV2 Supports and extends many memory configurations on its 4 SIMM and
2 DIMM sites. The memory size of any configuration can be combined flexibly.
The above tables only list the basic memory configurations for your reference.
Many configurations are not listed, you may use other configurations not listed
on the above. BIOS will detect your memory configuration automatically.
3, The 70ns Fast Page Mode or 60ns EDO DRAM is necessary.
4,
Usually, the DIMM2 and SIMM3&4 occupy the same memory block, Bank 0. They
cannot be installed at the same time. Likewise, the DIMM1 and SIMM1&2 occupy
the same memory block, Bank1. They cannot be installed at the same time either.
However with a special design to expand memory, the P55TV2 allows you to
upgrade single-side DRAM at DIMM2 (Bank0) and DIMM1 (Bank1), if you use
single-side DRAM at the SIMM3&4 and SIMM1&2.
Regarding single-side or double-side DRAM/SDRAM, please contact your DRAM/
SDRAM suppliers for the details,
4M x 2 (8 MB)
4M x 2 (8 MB)
4M x 2 (8 MB)
16M x 2 (32 MB)
16M x 2 (32 MB)
16M x 2 (32 MB)
DIMM2(Bank0)
8MB
32MB
8MB
8MB
32MB
DIMM1(Bank1) TOTAL
8MB
32MB
32MB
8MB
32MB
32MB
32MB
56MB
72MB
80MB
104MB
128MB
2-5 Cache Memory Configuration
The second level (L2) cache is installed in the mainboard to increase the system
performance. The P55TV2 supports 512KB cache (piplined burst SRAM).
U22
16K*8
TAG SRAM
64K*32
DATA SRAM
U16
64K*32
U21
Page 13
2-6 Integrated PCI Bridge
Hardware Design 2-11
The P55TV2 utilizes Intel's 430VX PCIset chipset to support Intel Pentium Proces-
R
sor PCI/ISA system. The Intel 82430VX PCIset chipset consists of one 82437VX
system controller (TVC), two 82438VX Data Path (TDP) devices, and one 82371SB
PCI ISA/IDE Accelerator (PIIX3) bridge chip. It provides an interface which translates CPU cycle into PCI bus cycle and PCI burst read/write capability. In addition, it
provides high performance PCI arbiter or supports four PCI Masters, Rotating
Priority Mechanism, and Hidden Arbitration Scheme Minimizes Arbitration Overhead. The 82371SB(PIIX3) supports PCI Specification Revision 2.1 Compliant and
contains a Universal Serial Bus interface with both host and hub control functions.
The P55TV2 reserves USB connector to provide two USB ports for serial transfer at
12 or 1.5 Mbit/sec. This will supports legacy keyboard and mouse software with
USB-Base Keyboard and mouse.
There are four interrupts in each PCI slot : INTA#, INTB#, INTC#, and INTD#, since
the P55TV2 adapts the PCI auto-configuration with the system BIOS Setup utility.
When the system is turned on after adding a PCI add-in card, the BIOS automatically
configure interrupts, DMA channels, I/O space, and other paramaters. You do not
have to configure jumpers or worry about potential resource conflicts. Because PCI
cards use the same interrupt resource as ISA cards, you must specify the interrupts
used by ISA add-in cards in the BIOS Setup utility.
If a "Legacy card" (such as paddle card and cable) is plugged into the ISA slot the
following modifications in the ROM SETUP UTILITY become necessary. First,
enter PCI CONFIGURATION SETUP utility from ROM SETUP UTILITY
main menu to set the "PCI IDE IRQ MAP TO : ISA".
Second, enter CHIPSET FEATURES SETUP UTILITY from ROM SETUP
UTILITY main menu and set the "Onboard Primary PCI IDE: Disabled and
Onboard Secondary PCI IDE: Disabled." When you plugg the PCI/ISA IDE card
into the system, You should Disabled Onboard Primary and Secondary PCI IDE
from CHIPSET FEATURES SETUP UTILITY too.
you can set the system interrupt request (IRQ) on some "Legacy cardswhich have
no paddle card and cable" (refer to user's manual of the card) to a proper system
IRQ level (In general, the card's Primary is assigned to INTA and Secondary is
assigned to INTB). If the card is plugged into slot 1(marked PCI#1), you cannot
use second slot (marked PCI#2) because the Secondary INT signal takes INTB
from the slot (Refer to Page 3-12 for circuit diagram). The user then enters PCICONFIGURATION SETUP utility from ROM SETUP UTILITY main menu
and sets the "PCI IDE IRQ MAP TO : PCI-Slot 1" (depend on the slot # where
the Legacy card is plugged).
.
Page 14
AWARD BIOS 3-1
Chapter 3
AWARD BIOS Setup
Award's ROM BIOS provides a built-in Setup program which allows user to modify the
basic system configuration and hardware parameters. The modified data will be stored
in a battery-backed CMOS RAM so data will be retained even when the power is turned
off. In general, the information saved in the CMOS RAM stay unchanged unless there
is a configuration change in the system, such as a hard drive replacement or a new device
installment.
It is possible for the CMOS battery to fail. This will cause data lose in CMOS only.If
this does happen you will need to reconfigure your configuration parameters.
To enter Setup Propgram
Power on the computer and press <Del> key immediately . This will bring you into BIOS
CMOS SETUP UTILITY.
ROM PCI/ISA BIOS(2A59GPAC)
CMOS SETUP UTILITY
AWARD SOFTWARE, INC.
STANDARD CMOS SETUPSUPERVISOR PASSWORD
BIOS FEATURES SETUPUSER PASSWORD
CHIPSET FEATURES SETUPIDE HDD AUTO DETECTION
POWER MANAGEMENT SETUPHDD LOW LEVEL FORMAT
PNP/PCI CONFIGURATIONSAVE & EXIT SETUP
INTEGRATED PERIPHERALSEXIT WITHOUT SAVING
LOAD SETUP DEFAULTS
ESC : QUIT : SELECT ITEM
F10 : Save & Exit Setup (Shift)F2 : Change Color
The menu displays all the major selection items. Select the item you need to
reconfigure. The selection is made by moving cursor (press any direction key ) to the
item and press the 'Enter' key. An on-line help message is displayed at the bottom of
the screen as the cursor is moving to various items which provides a better understanding of each function. When a selection is made, the menu of selected item will
appear so the user can modify associated configuration parameters.
Time, Date, Hard Disk Type...
Figure 3-1 CMOS SETUP UTILITY
Page 15
3-2 CHAPTER 3
3-1 STANDARD CMOS SETUP
Choose " STANDARD CMOS SETUP" in the CMOS SETUP UTILITY Menu (Fig.3-
1). The STANDARD CMOS SETUP allows user to configure system setting such as the
current date and time, type of hard disk drive installed, floppy drive type, and display type.
Memory size is auto-detected by the BIOS and displayed for your reference. When a field
is highlighted (use direction keys to move cursor and <Enter> key to select), the entry in
the field will be changed by pressing <PgDn> or <PgUp> keys or user can enter new data
directly from the keyboard.
ROM PCI/ISA BIOS(2A59GPAC)
STANDARD CMOS SETUP
AWARD SOFTWARE, INC.
Date (mm:dd:yy) : Wed, Apr 17 1996
Time (hh:mm:ss) : 14 : 30 : 50
HARD DISKS TYPE SIZE CYLSHEADPRECOMP LANDZONE SECTORS MODE
Primary Master : Auto 00 0 0 0 0 Auto
Primary Slave : Auto 00 0 0 0 0 Auto
Secondary Master : Auto 00 0 0 0 0 Auto
Secondary Slave : Auto 00 0 0 0 0 Auto
Drive A : 1.44M, 3.5 in.
Drive B : None
Floppy 3 Mode Support : Disabled
Video : EGA/VGA
Halt On : All Errors
ESC : Quit: Select ItemPU/PD/+/- : Modify
F1 : Help(Shift) F2 : Change Color
Base Memory :640K
Extended Memory : 31744K
Other Memory :384K
Total Memory : 32768K
Figure 3-2 STANDARD CMOS SETUP
NOTE: If hard disk Primary Master/Slave and Secondary Master/Slave use Auto,
then the hard disk size and model will be auto-detected.
NOTE: The "Halt On : " field is to determine when to halt the system by the BIOS if an error
occurrs.
3-2 BIOS FEATURES SETUP
Selecting the " BIOS FEATURES SETUP" option in the CMOS SETUP UTILITY menu
allows user to change system related parameters in the displayed menu. This menu shows
all of the manufacturer's default values of the P55TV2. Again, user can move the cursor
by pressing direction keys and <PgDn> or <PgUp> keys to modify the parameters.
Pressing [F1] key to display help message of the selected item.
This setup program also provides 2 convenient ways to load the default parameter data
from BIOS [F6] or CMOS [F7] area if the shown data is corrupted. This provides the system
a capability to recover from any possible error.
Page 16
AWARD BIOS 3-3
ROM PCI/ISA BIOS(2A59GPAC)
BIOS FEATURES SETUP
AWARD SOFTWARE, INC.
Virus Warning: DisabledVideo BIOSShadow: Enabled
CPU Internal Cache: EnabledC8000-CBFFFShadow: Disabled
External Cache: EnabledCC000-CFFFFShadow: Disabled
Quick Power On Self Test: EnabledD0000-D3FFFShadow: Disabled
Boot Sequence: A,C, SCSID4000-D7FFF Shadow: Disabled
Swap Floppy Drive: DisabledD8000-DBFFF Shadow: Disabled
Boot Up Floppy Seek: EnabledDC000-DFFFF Shadow: Disabled
Boot Up NumLock Status: On
Boot UP System Speed: High
Gate A20 option: Fast
Typematic Rate Setting: Disabled
Typematic Rate (Chars/Sec): 6
Type matic Delay (Msec) : 250
Security Option: Setup
PCI/VGA Palette Snoop: Disabled
OS Select For DRAM > 64MB: Non-OS2
Esc : Quit : Select Item
F1 : Help PU/PD/+/- : Modify
F5 : Old Values (Shift)F2 : Color
F7 : Load Setup Defaults
Figure 3-3 BIOS FEATURES SETUP
Note: The Security Option contians "setup" and "system". The "setup" indicates
that the password setting is for CMOS only while the "system" indicates the
password setting is for both CMOS and system boot up.
Virus Warning: This category flashes on the screen. During and after the system
boots up, any attempts to write to the boot sector or partition table of the hard disk
drive will halt the system and an error message will appear. You should then run an
anti-virus program to locate the virus. Keep in mind that this feature protects only the
boot sector, not the entire hard drive. Default value is Disabled
Enabled : Activate automatically when the system boots up causing a warning
message to appear when any attempts to access the boot sector or the
hard disk partition table.
Disabled: No warning message to appear when any attempts to access the boot
sector or the hard disk partition table.
CPU Internal Cache / External Cache: These two categories speed up memory
access. However, it depends on CPU/chipset design. The default value is Enabled.
If your CPU is without Internal Cache then the item "CPU Internal Cache" will not
show.
Enabled: Enable cache.
Disable : Disable cache.
Page 17
3-4 CHAPTER 3
Quick Power On Self Test:This category speeds up Power On Self Test (POST)
after you power on the computer. If it is set to Enable, BIOS will shorten or skip
some check items during POST.
Enabled : Enable quick POST.
Disabled: Normal POST.
Boot Sequence:This category determines which drive is searched for first for
the O/S(Operating System). Default value is A,C.
A,C : System will first search for the floppy disk drive then the hard disk drive.
C,A : System will first search for the hard disk drive then the floppy disk drive.
CDROM,C,A: System will first search for the CDROM drive (If the CDROM has a
bootable CD title.) and second search for the hard disk drive then the
flopp disk drive.
C,CDROM,A: System will first search for the hard disk driver and second search for
the CDROM drive (If the CDROM has a bootable CD title.) then the
floppy disk drive.
Swap Floppy Drive: This will swap your physical drive letters A&B if you are using
two floppy disks. Default value is Disabled.
Enabled : Floppy A & B will be swapped under the O/S.
Disabled: Floppy A & B will be not swapped.
Boot Up Floppy Seek: During POST,BIOS will determine if the floppy disk drive
installed is 40 or 80 tracks. Only 360K type is 40 tracks while 760K, 1.2M and 1.44M
are all 80 tracks. The default value is Enabled.
Enabled : BIOS searches for the floppy disk drive to determine if it is 40 or 80 tracks.
Note that BIOS cannot tell from 720K, 1.2M or 1.44M drive type as they are
all 80 tracks.
Disabled: BIOS will not search for the type of floppy disk drive by track number.
Note that there will not be any warning message if the drive installed
is 360K.
Boot Up NumLock Status: The default value is On.
On : Keypad is number keys.
Off : Keypad is arrow keys.
Boot UP System Speed: Select the default system speed. The system will run at the
selected speed after the system boots.
High: Set the speed to high.
Low : Set the speed to low.
Gate A20 Option: This refers to the way the system addresses memory above 1MB
(extended memory). The default value is Fast.
Normal : The A20 signal is controlled by keyboard controller or chipset hardware.
Fast : The A20 signal is controlled by Port 92 or chipset specific
method.
Page 18
AWARD BIOS 3-5
Typematic Rate Setting: This determines the typematic rate.
Enabled : Enable typematic rate and typematic delay programming.
Disabled: Disable typematic rate and typematic delay programming. The system
BIOS will use default value of these 2 items and the default is controlled
by keyboard.
Typematic Rate(Chars/Sec):
6 : 6 characters per second. 8 : 8 characters per second.
10: 10 characters per second. 12: 12 characters per second.
15: 15 characters per second. 20: 20 characters per second.
24: 24 characters per second. 30: 30 characters per second.
Typematic Delay(Msec): When holding a key, the time between the first and
second character displayed is typematic delay.
250 : 250msec.
500 : 500 msec.
750 : 750 msec.
1000: 1000 msec.
Security Option: This category allows you to limit access to the system and Setup,
or just to Setup. The default value is Setup.
System: The system will not boot and access to Setup if the correct
password is not entered at the prompt.
Setup : The system will boot, but the access to Setup will be denied if the correct
password is not entered at the prompt.
PCI/VGA Palette Snoop: This filed controls the ability of a primary PCI VGA
controller to share a common palette (when a snoop write cycles) with an ISA
video card. The default value is Disabled.
Enabled:If an ISA card connects to a PCI VGA card via the VESA connector
and the ISA card connects to VGA monitor and that ISA card uses
the RAMDAC of PCI card, the PCI/VGA Palette Snoop is enabled.
Disabled:Disable the VGA card Palette snoop function.
Video BIOS Shadow: It determines whether video BIOS will be copied to RAM,
however, it is optional from chipset design. Video Shadow will increase the video
speed.
Enabled :Video shadow is enabled.
Disabled:Video shadow is disabled.
These categories determine whether other expansion card optional ROM will be
copied to RAM by 16K byte or 32K byte perunit and the size depends on chipset. If
you install other expansion cards with ROMs on them, you will need know which
addresses the ROMs used to shadow themselves specifically.
Enabled : Optional shadow is enabled.
Disabled: Optional shadow is disabled.
3-3 CHIPSET FEATURES SETUP
Choose the "CHIPSET FEATURES SETUP" in the CMOS SETUP UTILITY
menu to display the following menu.
ROM PCI/ISA BIOS(2A59GPAC)
CHIPSET FEATURES SETUP
AWARD SOFTWARE, INC.
Auto Configuration: EnabledPeer Concurrency: Enabled
DRAM Timing: 60 nsChipset NA# Asserted: Enabled
DRAM RAS# Precharge Time: 3Delayed Transaction: Disabled
DRAM R/W Leadoff Timing: 6
Fast RAS to CAS Delay: 3
DAM Read Burst (EDO/FP): x222/x333
DRAM Write Burst Timing: x222
Fast MA to RAS# Delay CLK: 1
Fast EDO Path Select: Disabled
Refresh RAS# Assertion: 4 Clks
ISA Bus Clock: PCICLK/4
Pipline Cache Timing: Fastest
Passive Release: Enabled
System BIOS Cacheable: Disabled
Video BIOS Cacheable: Enabled
8 Bit I/O Recovery Time: 1
16 Bit I/O Recovery Time: 1
Memory Hole At 15M-16M: Disabled
Figure 3-4 CHIPSET FEATURES SETUP
Esc : Quit : Select Item
F1 : Help PU/PD/+/- : Modify
F5 : Old Values (Shift)F2 : Color
F7 : Load Setup Defaults
Page 20
AWARD BIOS 3-7
Auto Configuration: This Category allows you to set the DRAM timing. The
default value is Enabled. When disabled this field, you can select the different
DRAM timings supported by chipsets.
Note: When you insert slower memory modules in the system and set a faster
timing, maybe, the system will hang up.
DRAM Timing: The default value is 60ns.
60ns : 2 (faster) Burst Wait State, for 60~70ns Fast Page Mode/EDO DRAM.
70ns : 3 (slower) Burst Wait State, for 70ns Fast Page Mode/EDO DRAM.
Video BIOS Cacheable: The default value is Enabled.
Enabled : Enable the Video BIOS Cacheable to speed up the VGA
Performance.
Disabled: Disable the Video BIOS Cacheable function.
8/16 Bit I/O Recovery Time: The default value is 1.
8 Bit I/O Recovery Time: This field defines the recovery time from 1 to 8 for 8-
bit I/O.
16 Bit I/O Recovery Time: To define the recovery time from 1 to 4 for 16-bit I/O.
Memory Hole at 15M-16M: The default value is Disabled.
Disabled: Normal Setting.
Enabled :enable the main memory (15~16MB) remap to ISA BUS. This feature
reserves 15MB to 16MB memory address space to ISA expansion card that
specifically requires this setting.
Peer Concurrency: The default value is Enabled.
Chipset NA# Asserted: The default value is Enabled.
Passive Release: The default value is Enabled.
Delay Transaction: The default value is Disabled.
3-4 POWER MANAGEMENT SETUP
Choose the "POWER MANAGEMENT SETUP" in the CMOS SETUP
UTILITY to display the following screen. This menu allows user to modify the
power management parameters and IRQ signals. In general, these parameters
should not be changed unless it is absolutely necessary.
Page 21
3-8 CHAPTER 3
ROM PCI/ISA BIOS
POWER MANAGEMENT SETUP
AWARD SOFTWARE, INC.
Power Management: User Define** Power Down & Resume Events **
PM Control by APM: YesIRQ3 (COM 2): ON
Video off Method: V/H SYNC+Blank IRQ4 (COM 1): ON
MODEM Use IRQ: 3IRQ5 (LPT 2): ON
Doze Mode: DisableIRQ7 (LPT 1): OFF
Standby Mode: DisabledIRQ8 (RTC Alarm): OFF
Suspend Mode: DisabledIRQ9 (IRQ2 Redir): ON
HDD Power Down: 15 MinIRQ10 (Reserved): ON
** Wake Up Events In Doze & Standby **IRQ12 (PS/2 Mouse): ON
IRQ3 (Wake-Up Event): ONIRQ13 (Coprocessor): ON
IRQ4 (Wake-Up Event): ONIRQ14 (Hard Disk): ON
IRQ8 (Wake-Up Event): ONIRQ15 (Reserved0: ON
IRQ12 (Wake-Up Event): ON
IRQ6 (Floppy Disk): ON
IRQ11 (Reserved): ON
Esc : Quit: Select Item
F1 : Help PU/PD/+/- : Modify
F5 : Old Values (Shift)F2 : Color
F7 : Load Setup Defaults
Figure 3-5 POWER MANAGEMENT SETUP
Again, user can move the cursor by pressing direction keys to the field that needs to
be modified and press <PgDn> or <PgUp> to alter item selection. You can only
change the content of Doze Mode, Standby Mode, and Suspend Mode when the Power
Management is set to ' User Define'.
Note: When the computer enters the suspend mode (setting the suspend mode
valid range from 1 minute up to 1 hour) activated by the BIOS Power Management, you need to RUN a program POWER.EXE under DOS root, or need to
add DEVICE=C:\DOS\POWER.EXE in your CONFIG.SYS. This will keep the
system time updating normally when the system wake up from the suspend
mode. The supend mode for Windows 95 or windows 3.1x must have windows
R
APM feature installed. Choose "Advanced Power Management" item from
"system device". The "system device" field was from "system" icon in the
"control panel."
3-4-1 The Description of the Power Management
A. Power Management mode selection :
Disabled : The system operates in NORMAL conditions (Non-GREEN)
and the Power Management function is disabled.
Max. saving: This mode will maximize the power saving capability.
Min. saving: This mode will minimize the power saving capability.
User Define: Allows user to define time-out parameters to control the power saving
mode. Refer to item B shown below.
Page 22
AWARD BIOS 3-9
B. Time-out parameters :
HDD Standby
HDD Standby timer can be set from 1 to 15 minute(s).
System Doze
The "System Doze" mode timer starts to count when there is no "PM events"
occurred. The valid time-out setting is from 1 minute up to 1 hour.
System Standby
The "Standby" mode timer starts to count when "System Doze" mode timer timed
out and no "PM events" occurred. Valid range is from 1 minute up to 1 hour.
System Suspend
This function works only when the Pentium Procssor is installed. The timer starts
R
to count when "System Standby" mode timer is timed out and no "PM Events"
occurred. Valid range is from 1 minute up to 1 hour.
3-4-2 Description of the Green Functions
The P55TV2 supports HDD Power Down, Doze and standby power saving functions
when Intel Pentium Processor is installed. In addition, the suspend function
is supported when the J2's sleep (refer to Figure1-1) is closed to enter the green function.
The detailed descriptions of these functions are provided in the next page.
HDD Power Down
When system stop reading or writing HDD, the timer starts to count. The system will
cut off the HDD power when timer runs out of time. The system will not resume
operation until either a read from or a wirte to HDD command is executed again.
Doze Mode
The system hardware will drop down CPU clock from nomal working speed
when Doze mode time-out occurs
Standby Mode
When the system standby mode timer times-out, it will enter the standby mode and
retain CPU at slow working speed. The screen will be blanked out.
R
Suspend Mode
When the system suspend timer times-out, the system will enter the suspend mode
and the chipset will stop CPU clock immediately. The power consumption in
Suspend Mode is lower than in standby mode. The screen is also blanked out.
Page 23
3-10 CHAPTER 3
PM Events:
AWARD BIOS defines 15 PM Events in the power management mode (Doze,
standby & suspend). The user can initialize any PM Events to be "Enable" or "Disable".
When the system detects all of the enabled events, do not have any activity. It will
start the system Doze timer first if the "Power Management" is not "Disabled". Once
the system Doze timer is timed out, it will process doze power saving procedure
by starting the system standby timer. When the standby timer run out and all of the
"Enabled" events remains silent, the system will enter the standby mode. By now, the
system will not only process the standby power saving procedures but also start the
system suspend timer. When the suspend timer times out, all of the CPU clock will
stop by dropping system clock down to zero and remains this way until any one
of the "Enabled" event occurrs.
3-5PnP/PCI CONFIGURATION
The PnP/PCI configuration program is for the user to modify the PCI/ISA IRQ signals
when various PCI/ISA cards are inserted in the PCI or ISA slots.
WARNING : Conflicting IRQs may cause the system to not find cutain devices
ROM PCI/ISA BIOS(2A59CPAC)
PNP/PCI CONFIGURATION
AWARD SOFTWARE, INC.
Resources Controlled By: ManualPCI IRQ Actived By: Level
Reset Configuration Data: DisabledPCI IDE IRQ Map To: PCI-AUTO
IRQ-3assigned to: Legacy ISASecondary IDE INT#: B
IRQ-4assigned to: Legacy ISA
IRQ-5assigned to: PCI/ISA PnPUsed MEM base addr: N/A
IRQ-7 assigned to:PCI/ISA PnP
IRQ-9 assigned to: PCI/ISA PnP
IRQ-10 assigned to: PCI/ISA PnP
IRQ-11 assigned to: PCI/ISA PnP
IRQ-12 assigned to: PCI/ISA PnP
IRQ-14 assigned to: PCI/ISA PnP
IRQ-15 assigned to: PCI/ISA PnP
DMA-0 assigned to: PCI/ISA PnP
DMA-1 assigned to: PCI/ISA PnP
DMA-3 assigned to: PCI/ISA PnP
DMA-5 assigned to: PCI/ISA PnP
DMA-6 assigned to: PCI/ISA PnP
DMA-7 assigned to: PCI/ISA PnP
Primary IDE INT#: A
ESC : Quit: Select Item
F1 : Help PU/PD/+/- : Modify
F5 : No Change (Shift) F2 : Color
F7 : Load Setup Defaults
Figure 3-6 PCI CONFIGURATION SETUP
Resource Controlled By:The default value is Manual.
Manual: The PNP Card's resource will be controlled manually. You can set which
IRQ-X and DMA-X are assigned to PCI/ISA PNP or Legacy ISA Cards.
Auto:If your ISA card and PCI card are all PNP cards, BIOS will assign the inter
rupt resource automatically.
Page 24
AWARD BIOS 3-11
Reset Configuration Data: The default value is Disabled.
Disabled: Normal Setting.
Enabled : If you had plugged some Legacuy cards in the system and they were
recorded into ESCD(Extended System Configuration Data), you can set this
field to Enabled to clear ESCD.
PCI IDE IRQ Map To: The default value is PCI-AUTO
When you have true PCI card(s) plugged into the system, you will not need
to change any thing here in the SETUP program. However, if you do not
know whether you have true PCI card or not, please refer to your PCI card
user's manual for the details.
When you have a Legacy card (describbed in section 2-6) to be plugged
into the system,a proper setting is extremely important or it may cause the
system hang. The diagram shown below tells you how the Rotating
Priority Mechanism is designed.
Used MEM base addr and Used MEM Length : The default value is N/A.
The Used MEM base addr (CB00, CC00, D000, D400, D800,
DC00)and Used MEM Length (8K, 16K, 32K, 64K)were to support some
specific ISA Legacy cards with requested memory space below 1M
address. Now with these two functions, users can define where the used
memory address is located and its length of the legacy area that is wsed
by the legacy device to avoid the memory space confilict. For example, if
users select "D000" for "Used MEM base addr" and "16K" for "Used
MEM Length," that means the address region D0000H-D3FFFH is
occupied by ISA legacy cards, and thus BIOS will not assign this region
for PnP/ISA and PCI cards.
PCI#4
INTB
INTC
INTD
INTA
INTC
INTD
INTB
INTD
INTC
PCI#1PCI#2PCI#3
INTA
INTBINTA
INTCINTBINTA
INTD
INTA
INTB
INTC
INTD
SB82371SB
Figure 3-7 The Combination of PCI INT# lines
PCI
Chipset
Page 25
3-12 CHAPTER 3
3-6 INTEGRATED PERIPHERALS
ROM PCI/ISA BIOS(2A59GPAC)
INTEGRATED PERIPHERALS
WARD SOFTWARE, INC.
IDE HDD Block Mode: EnabledOnboard IR Controller: Disabled
IDE Primary Master PIO: Auto
IDE Primary Slave PIO: Auto
IDE Secondary Master PIO: Auto
IDE Secondary Slave PIO: Auto
Onboard Primary PCI IDE: Enabled
Onboard Secondary PCI IDE: Enabled
PCI Slot IDE 2nd Channel: Enabled
USB Controller: Disabled
KBC input clock: Auto
Onboard FDC Controller: Enabled
Onboard Serial Port 1: Auto
Onboard Serial Port 2: Auto
Onboard Parallel Port: 378/IRQ7
Parallel Port Mode: ECP+EPP
ECP Mode Use DMA: 3
Parallel Port EPP Type: EPP1.9
If you do not use the Onboard IDE connector, then use On-card
Note:
ESC : Quit : Select Item
F1 : Help PU/PD/+/- : Modify
F5 : No Change (Shift) F2 : Color
F7 : Load Setup Defaults
(PCI or ISA card) IDE connector. You will set Onboard Primary
PCI IDE: Disabled and Onboard Secondary PCI IDE: Disabled
from CHIPSET FEATURES SETUP UTILITY.
The Onboard PCI IDE cable should be equal to or less than
18 inches (45 cm.).
IDE HDD Block Mode: The default value is Enabled.
Enabled : Enable IDE HDD Block Mode to provide higher HDD transfer rate.
Disabled: Disable IDE HDD Block Mode.
PCI Slot IDE 2nd Channel: The default value is Enabled.
Enabled : Enable secondary IDE port and BIOS will assign IRQ15 for this port.
Disabled : Disable secondary IDE port and IRQ15 is available for other device.
Onboard Primary PCI IDE: The default value is Enabled.
Enabled : Enable Onboard IDE primary port.
Disabled : Disable Onboard IDE primary port, when using On-card (PCI or ISA
card) IDE connector.
Onboard Secondary PCI IDE: The default value is Enabled.
Enabled : Enable Onboard IDE secondary port.
Disabled : Disable Onboard IDE secondary port when usingOn-card (PCI or ISA
card) IDE connector.
Page 26
AWARD BIOS 3-13
IDE Primary Master PIO: The default value is Auto.
Auto: BIOS will automatically detect the Onboard Primary Master PCI
IDE HDD Accessing mode.
Mode0~4: Manually set the IDE Accessing mode.
IDE Primary Slave PIO: The default value is Auto.
Auto: BIOS will automatically detect the Onboard Primary Slave PCI IDE
HDD Accessing mode.
Mode0~4: Manually set the IDE Accessing mode.
IDE Secondary Master PIO: The default value is Auto.
Auto: BIOS will automatically detect the Onboard Secondary Master PCI
IDE HDD Accessing mode.
Mode0~4: Manually set the IDE Accessing mode.
IDE Secondary Slave PIO: The default value is Auto.
Auto: BIOS will automatically detect the Onboard Secondary Slave PCI
IDE HDD Accessing mode.
Mode0~4: Manually set the IDE Accessing mode.
Onboard FDC Controller: The default value is Enabled.
Enabled: Enable the Onboard SMC CHIP's floppy drive interface controller.
Disabled: Disable the Onboard SMC CHIP's floppy drive interface controller.
when using On-card ISA FDC's controller.
Onboard UART 1: This field allows the user to sellect the serial port. The default
value is 3F8H/IRQ4.
COM1: Enable Onboard Serial port 1 and address is 3F8H/IRQ4.
COM2: Enable Onboard Serial port 1 and address is 2F8H/IRQ3.
COM3: Enable Onboard Serial port 1 and address is 3E8H/IRQ4.
COM4: Enable Onboard Serial port 1 and address is 2E8H/IRQ3.
Disabled: Disable Onboard SMC CHIP's Serial port 1.
Onboard UART 2: This field allows the user to sellect the serial port. The default
value is 2F8H/IRQ3.
COM1: Enable Onboard Serial port 2 and address is 3F8H/IRQ4.
COM2: Enable Onboard Serial port 2 and address is 2F8H/IRQ3.
COM3: Enable Onboard Serial port 2 and address is 3E8H/IRQ4.
COM4: Enable Onboard Serial port 2 and address is 2E8H/IRQ3.
Disabled: Disable Onboard SMC CHIP's Serial port 2.
Page 27
3-14 CHAPTER 3
Onboard UART 2 Mode: The default value is standard. This field allows the User to
select the COM2 port that can support a serial Infrared Interface.
Standard: Support a Serial Infrared Interface IrDA.
HPSIR:Support a HP Serial Infrared Interface format.
ASKIR: Support a Sharp Serial Infrared Interface format.
Onboard Parallel port: This field allows the user to sellect the LPT port. The default
value is 378H/IRQ7.
378H: Enable Onboard LPT port and address is 378H and IRQ7
278H: Enable Onboard LPT port and address is 278H and IRQ5.
3BCH: Enable Onboard LPT port and address is 3BCH and IRQ7.
Disabled: Disable Onboard SMC CHIP's LPT port.
NOTE: Parallel Port address is 378H/3BCH that selects the rounting of IRQ7 for LPT1.
Parallel Port address is 278H that selects the rounting of IRQ5 for LPT1.
Parallel port Mode: This field allows the user to sellect the parallel port mode.
The default value is ECP+EPP.
Normal: Standard mode. IBM PC/AT Compatible bidirectional parallel port.
EPP: Enhanced Parallel Port mode.
ECP: Extended Capabilities Port mode.
EPP+ECP: ECP Mode & EPP Mode.
ECP Mode USE DMA: This field allows the user to sellect DMA1 or DMA3 for
the ECP mode. The default value is DMA3.
DMA1: The filed selects the rounting of DMA1 for the ECP mode.
DMA3: The filed selects the rounting of DMA3 for the ECP mode.
3-7LOAD SETUP DEFAULTS
The "LOAD SETUP DEFAULTS" function loads the system default data directly
from ROM and initializes the associated hardware properly. This function will be
necessary only when the system CMOS data is corrupted.
Page 28
AWARD BIOS 3-15
ROM PCI/ISA BIOS(2A59GPAC)
CMOS SETUP UTILITY
AWARD SOFTWARE, INC.
STANDARD CMOS SETUPSUPERVISOR PASSWORD
BIOS FEATURES SETUPUSER PASSWORD
CHIPSET FEATURES SETUPIDE HDD AUTO DETECTION
POWER MANAGEMENT SETUPHDD LOW LEVEL FORMAT
PNP/PCI CONFIGURA ETUP
INTEGRATED PERIPH SAVING
To change the password, choose the "SUPERVISOR PASSWORD or USER
PASSWORD " option from the CMOS SETUP UTILITY menu and press [Enter].
NOTE : Either "Setup" or "System" must be selected in the " Security Option " of the
BIOS FEATURES SETUP menu (Refer to Figure 3-3 for the details).
1. If CMOS is corrupted or the option is not used, a default password stored in the ROM
will be used. The screen will display the following message:
Enter Password:
Press the [Enter] key to continue after proper password is given.
2. If CMOS is corrupted or the option was used earlier and the user wish to change
default password, the SETUP UTILITY will display a message and ask for a
confirmation.
Confirm Password:
3. After pressing the [Enter] key (ROM password if the option was not used) or current
password (user-defined password), the user can change the password and store new
one in CMOS RAM. A maximum of 8 characters can be entered.
Page 29
3-16 CHAPTER 3
3-9 IDE HDD AUTO DETECTION
The "IDE HDD AUTO DETECTION" utility is a very useful tool especially when you
do not know which kind of hard disk type you are using. You can use this utility to detect
the correct disk type installed in the system automatically. But now you can set HARDDISK TYPE to Auto in the STANDARD CMOS SETUP . You do not need the "IDE HDD
AUTO DETECTION" utility. The BIOS will Auto-detect the hard disk size and model on
display during POST.
ROM PCI/ISA BIOS(2A59GPAC)
CMOS SETUP UTILITY
AWARD SOFTWARE, INC.
HARD DISKS TYPE SIZE CYLS HEADS PRECOMP LANDZONE SECTORS MODE
The Award BIOS supports 3 HDD modes : NORMAL, LBA & LARGE
NORMAL mode.
Generic access mode in which neither the BIOS nor the IDE controller will
make any transformations during accessing.
The maximum numbers of cylinders, heads & sectors for NORMAL mode are
1024, 16 & 63.
no. Cyclinder (1024)
x no. Head ( 16)
x no. Sector ( 63)
x no. per sector ( 512)
528 Megabytes
If user sets his HDD to NORMAL mode, the maximum accessible HDD size
will be 528 Megabytes even though its physical size may be greater than that!
Page 30
AWARD BIOS 3-17
LBA (Logical Block Addressing) mode: A new HDD accessing method to overcome the
528 Megabyte bottleneck.
The number of cylinders, heads & sectors shown in setup may not be the number
physically contained in the HDD.
During HDD accessing, the IDE controller will transform the logical address
described by sector, head & cylinder into its own physical address inside the HDD.
The maximum HDD size supported by LBA mode is 8.4 Gigabytes which is obtained by
the following formula:
no. Cyclinder (1024)
x no. Head ( 255)
x no. Sector ( 63)
x bytes per secttor ( 512)
8.4 Gigabytes
LARGE mode:Extended HDD access mode supported by Award Software.
Some IDE HDDs contain more than 1024 cylinder without LBA support (in some
cases, user does not want LBA). The Award BIOS provides another alternative to
support these kinds of LARGE mode:
CYLS. HEADS SECTOR MODE
1120 16 59 NORMAL
560 32 59 LARGE
BIOS tricks DOS (or other OS) that the number of cylinders is less than 1024 by
dividing it by 2. At the same time, the number of heads is nultiplied by 2. A reverse
transformation process will be made inside INT 12h in order to access the right
HDD address!
Maximum HDD size:
no. Cyclinder (1024)
x no. Head ( 32)
x no. Sector ( 63)
x bytes per sector ( 512)
1 Gigabytes
Page 31
3-18 CHAPTER 3
Note:
To support LBA or LARGE mode of HDDs, there must be some softwares involved.
All the software is located in the Award HDD Service Routine (1NT 13h). It may
fail to access a HDD with LBA (LARGE) mode selected if you are running under
an Operating System which replaces the whole 1NT 13h. UNIX operating systems
do not support either LBA or LARGE and must utilize the Standard mode. UNIX
can support drives larger than 528MB.
3-10 HDD LOW LEVEL FORMAT
Interleave
Select the interleave number of the hard disk drive that you wish to perform a low
level format on. You may select from 1 to 8. Check the documentation that
came with the drive for the correct interleave number, or select 0 for automatic
detection.
Auto scan bad track
This allows the utility to scan first then format by each track.
Start
Press<Y>to start low level format.
3-11 SAVE & EXIT SETUP
The "SAVE & EXIT SETUP" option will bring you back to boot up procedure
with all changes you just recorded in the CMOS RAM.
3-12 EXIT WITHOUT SAVING
The "EXIT WITHOUT SAVING" option will bring you back to normal boot up
procedure without saving any data into CMOS RAM. All old data in the CMOS
will not be destroyed.
Page 32
TECHNICAL INFORMATION 4-1
Chapter 4
Technical Information
4-1 I/O & MEMORY MAP
MEMORY MAP
Address Range Size Description
[00000-7FFFF]512K Conventional memory
[80000-9FBFF]127K Extended Conventional memory
[9FC00-9FFFF]1K Extended BIOS data area if PS/2 mouse is installed
[A0000-C7FFF]160K Available for Hi DOS memory
[C8000-DFFFF]96K Available for Hi DOS memory and adapter ROMs
[E0000-EEFFF]60K Available for UMB
[EF000-EFFFF]4K Video service routine for Monochrome & CGA adaptor
[F0000-F7FFF]32K BIOS CMOS setup utility
[F8000-FCFFF]20K BIOS runtime service routine (2)
[FD000-FDFFF]4K Plug and Play ESCD data area
[FE000-FFFFF]8K BIOS runtime service routine (1)
I/O MAP
[000-01F] DMA controller.(Master)
[020-021] INTERRUPT CONTROLLER.(Master)
[022-023] CHIPSET control registers. I/O ports.
[040-05F] TIMER control registers.
[060-06F] KEYBOARD interface controller.(8042)
[070-07F] RTC ports & CMOS I/O ports.
[080-09F] DMA register.
[0A0-0BF] INTERRUPT controller.(Slave)
[0C0-0DF] DMA controller.(Slave)
[0F0-0FF] MATH COPROCESSOR.
[1F0-1F8 ] HARD DISK controller.
[278-27F] PARALLEL port 2.
[2B0-2DF] GRAPHICS adapter controller.
[2F8-2FF] SERIAL port 2.
[360-36F] NETWORK ports.
[378-37F] PARALLEL port 1.
[3B0-3BF] MONOCHROME & PARALLEL port adapter.
[3C0-3CF] EGA adapter.
[3D0-3DF] CGA adapter.
[3F0-3F7] FLOPPY DISK controller.
[3F8-3FF] SERIAL port 1.
Page 33
4-2 CHAPTER 4
4-2 TIME & DMA CHANNELS MAP
TIME MAP: TIMER Channel 0System timer interrupt.
TIMER Channel 1DRAM REFRESH request.
TIMER Channel 2SPEAKER tone generator.
1KEYBOARD output buffer full.
2Cascade for IRQ 8-15.
3SERIAL port 2.
4SERIAL port 1.
5PARALLEL port 2.
6FLOPPY DISK (SMC CHIP).
7PARALLEL port 1.
8RTC clock.
9Available.
10Available.
11Available.
12PS/2 Mouse.
13MATH coprocessor.
14Onboard HARD DISK(IDE1) channel.
15Onboard HARD DISK(IDE2) channel.
Page 34
TECHNICAL INFORMATION 4-3
4-4 RTC & CMOS RAM MAP
RTC & CMOS : 00Seconds.
01Second alarm.
02Minutes.
03Minutes alarm.
04Hours.
05Hours alarm.
06Day of week.
07Day of month.
08Month.
09Year.
0AStatus register A.
0BStatus register B.
0CStatus register C.
0DStatus register D.
0EDiagnostic status byte.
0FShutdown byte.
10FLOPPY DISK drive type byte.
11Reserve.
12HARD DISK type byte.
13Reserve.
14Equipment type.
15Base memory low byte.
16Base memory high byte.
17Extension memory low byte.
18Extension memory high byte.
19-2d
2E-2F
30Reserved for ectension memory low bytw.
31Reserved for extension memory high byte.
32DATE CENTURY byte.
33INFORMATION FLAG.
35-3FReserve.
40-7FReserved for CHIPSET SETTING DATA.
Page 35
4-4 CHAPTER 4
APPENDIX A: POST CODES
ISA POST codes are typically output to port address 80h.
POST(hex) DESCRIPTION
01-02
Reserved.
C0
03
04
05
06
07
C1
C5
08
09
Turn off OEM specific cache, shadow.
1.Initialize EISA registers (EISA BIOS only).
2.Initialize all the standard devices with default values Standard devices includes.
-DMA controller (8237).
-Programmable Interrupt Controller (8259).
-Programmable Interval Timer (8254).
-RTC chip.
Reserved
1.Keyboard Controller Self-Test.
2.Enable Keyboard Interface.
Reserved.
Verifies CMOS's basic R/W functionality.
Auto-detection of onboard DRAM & Cache.
Copy the BIOS from ROM into E0000-FFFFF shadow RAM so that POST will
go faster.
Test the first 256K DRAM.
OEM specific cache initialization. (if needed)
0A
0B
1.Initialize the first 32 interrupt vectors with corresponding Interrupt handlers
Initialize INT no from 33-120 with Dummy (Suprious)
Interrupt Handler.
2.Issue CPUID instruction to identify CPU type.
3.Early Power Management initialization. (OEM specific)
1.Verify the RTC time is valid or not.
2.Detect bad battery.
3.Read CMOS data into BIOS stack area.
4.PnP initializations including. (PnP BIOS only)
-Assign CSN to PnP ISA card.
-Create resource map from ESCD.
5.Assign IO & Memory for PCI devices. (PCI BIOS only)
Page 36
POST(hex) DESCRIPTION
TECHNICAL INFORMATION 4-5
0C
0D
0E
0F
10
11
12-13
14
15
Initialization of the BIOS Data Area. (40:ON - 40:FF)
1.Program some of the Chipset's value according to Setup. (Early Setup Value
Program)
2.Measure CPU speed for display & decide the system clock speed.
3.Video initialization including Monochromc, CGA, EGA/VGA. If no display
device found, the speaker will beep.
1.Test video RAM. (If Monochromc display device found)
2.Show messages including.
-Award Logo, Copyright string, BIOS Data code & Part No.
-OEM specific sign on messages.
-Energy Star Logo. (Green BIOS ONLY)
-CPU brand, type & speed.
-Test system BIOS checksum. (Non-Compress Version only)
DMA channel 0 test.
DMA channel 1 test.
DMA page registers test.
Reserved.
Test 8254 Timer 0 Counter 2.
Test 8259 interrupt mask bits for channel 1.
16
17
19
1A-1D
1E
1F-29
30
31
Test 8259 interrupt mask bits for channel 2.
Reserved.
Test 8259 functionality.
Reserved.
If EISA NVM checksum is good, exccute EISA initialization. (EISA BIOS only)
Reserved.
Detect Base Memory & Extended Memory Size.
1.Test Base Memory from 256K to 640K.
2.Test Extended Memory from 1M to the top of memory.
Page 37
4-6 CHAPTER 4
POST(hex) DESCRIPTION
32
33-3B
3C
3D
3E
3F-40
BF
41
42
43
1.Display the Award Plug & Play BIOS Extension message. (PnP BIOS only)
2.Program all onboard super I/O chips (if any) including COM ports, LPT
ports, FDD port ... according to setup value.
Reserved.
Set flag to allow users to enter CMOS Setup Utility.
1.Initialize Keyboard.
2.Install PS2 mouse.
Try to turn on Level 2 cache.
Note : Some chipset may need to turn on the L2 cache in this stage. But
usually, the cache is turn on later in POST 61h.
Reserved.
1.Program the rest of the Chipset's value according to Setup. (Later Setup Value
Program)
2.If auto-configuration is enabled, programmed the chipset with pre-defined
Values.
Initialize floppy disk drive controller.
Initialize Hard drive controller.
If it is a PnP BIOS, initialize serial & parallel ports.
44
45
46-4D
4E
4F
50
51
Reserved.
Initialize math coprocessor.
Reserved.
If there is any error detected (such as video, kb...), show all the error messages
on the screen & wait for user to press <F1> key.
1.If password is needed, ask for password.
2.Clear the Energy Star Logo. (Green BIOS only)
Write all CMOS values currently in the BIOS stack area back into the CMOS.
Reserved.
Page 38
POST(hex) DESCRIPTION
TECHNICAL INFORMATION 4-7
52
53
60
61
1.Initialize all ISA ROMs.
2.Later PCI initializations. (PCI BIOS only)
-assign IRQ to PCI devices.
-initialize all PCI ROMs.
3.PnP Initialzations. (PnP BIOS only)
-assign IO, Memory, IRQ & DMA to PnP ISA devices.
-initialize all PnP ISA ROMs.
4.Program shadows RAM according to Setup settings.
5.Program parity according to Setup setting.
6.Power Management Initialization.
-Enable/Disable global PM.
-APM interface initialization.
1.If it is NOT a PnP BIOS, initialize serial & paralled ports.
2.Initialize time value in BIOS data area by translate the RTC time value into
a timer tick value.
Setup Virus Protection. (Boot Sector Protection) functionality according to Setup
setting.
1.Try to turn on Level 2 cache.
Note : if L2 cache is already turned on in POST 3D, this part will be skipped.
2.Set the boot up speed according to Setup setting.
3.Last chance for Chipset initialization.
4.Last chance for Power Management initialization. (Green BIOS only)
5.Show the system configuration table.
62
1.Setup daylight saving according to Setup value.
2.Program the NUM Lock, typematic rate & typematic speed according to Setup
setting.
63
1.If there is any changes in the hardware configuration, update the ESCD
information. (PnP BIOS only)
2.Clear memory that have been used.
3.Boot system via INT 19H.
FF
System Booting. This means that the BIOS already pass the control right to the
operating system.
Reset IDE
Host Data 7
Host Data 6
Host Data 5
Host Data 4
Host Data 3
Host Data 2
Host Data 1
Host Data 0
Ground
DRQ3
I/O WriteI/O ReadIOCHRDY
DACK3IRQ14
Addr 1
Addr 0
Chip Select 0Activity
1 2 Ground
3 4 Host Data 8
5 6 Host Data 9
7 8 Host Data 10
9 10 Host Data 11
11 12 Host Data 12
13 14 Host Data 13
15 16 Host Data 14
17 18 Host Data 15
19 20 Key
21 22 Ground
23 24 Ground
25 26 Ground
27 28 BALE
29 30 Ground
31 32 IOCS1633 34 Ground
35 32 Addr 2
37 38 Chip Select 139 40 Ground
Page 41
4-10 CHAPTER 4
CN1: USB Connector:
1
PS/2 Mouse Connector
Figure 4-1 USB Port Adapter
USB Port 1
USB Port 2
1
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