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VERSA S
user Manual
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user Manual
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Nec VERSA S user Manual

PROPRIETARY NOTICE AND LIABILITY DISCLAIMER
The information disclosed in this document, including all designs and related materials, is the valuable property of NEC Corporation (NEC) and/or its licensors. NEC and/or its licen­sors, as appropriate, reserve all patent, copyright and other proprietary rights to this docu­ment, including all design, manufacturing, reproduction, use, and sales rights thereto, except to the extent said rights are expressly granted to others.
The NEC product(s) discussed in this document are warranted in accordance with the terms of the Warranty Statement accompanying each product. However, actual performance of each such product is dependent upon factors such as system configuration, customer data, and operator control. Since implementation by customers of each product may vary, the suitability of specific product configurations and applications must be determined by the customer and is not warranted by NEC.
To allow for design and specification improvements, the information in this document is subject to change at any time, without notice. Reproduction of this document or portions thereof without prior written approval of NEC is prohibited.
Versa and FastFacts are U.S. trademarks of NEC Technologies, Inc. All other product, brand, or trade names used in this publication are the trademarks or registered
trademarks of their respective trademark owners.
First Printing — June 1994
Copyright 1994 Copyright 1994
NEC Technologies, Inc. NEC Corporation
1414 Massachusetts Avenue 7-1 Shiba 5-Chome, Minato-Ku
Boxborough, MA 01719 Tokyo 108-01, Japan
All Rights Reserved All Rights Reserved

Preface

This service and reference manual contains the technical information necessary to set up, maintain, troubleshoot, and repair the Versa S series sub-notebooks. It also provides hard­ware and interface information for users who need an overview of the computer system de­sign. The manual is written for NEC-trained customer engineers, system analysts, service center personnel, and dealers.
The manual is organized as follows: Section 1, Technical Information, provides an overview of the computer features, hard-
ware design, interface ports and internal devices. Section 2, Setup and Operation, takes the user from unpacking to setup and operation.
Included is a description of the operating controls, System Configuration Utility, and system password.
Section 3, Power Management, describes how to use power management options to con­serve energy and save battery power.
xi
Section 4, Options, provides the user with installation information for options such as PCMCIA cards, memory upgrade, hard disk upgrade, and connecting external devices.
Section 5, Troubleshooting and Repair, includes a list of NEC service information and telephone numbers that provide access to the NEC Bulletin Board System (BBS), Fast­Facts, and Technical Information Bulletins. Included are desktop disassembly and reassem­bly procedures along with an illustrated parts breakdown. NEC service and spare parts ordering information is also provided.
Appendix A, Connector Pin Assignments, provides a list of the system board connector pin assignments.
An Index is included for convenience.

Abbreviations

xiii
A ampere AC alternating current AT advanced technology
(IBM PC)
BBS Bulletin Board System BCD binary-coded decimal BCU BIOS Customized Utility BIOS basic input/output system bit binary digit BUU BIOS Upgrade Utility bpi bits per inch bps bits per second C capacitance C centigrade Cache high-speed buffer storage CAM constantly addressable memory CAS column address strobe CD-ROM compact disk-ROM CG character generator CGA Color Graphics Adapter CGB Color Graphics Board CH channel clk clock cm centimeter CMOS complementary metal oxide
semiconductor
COM communication CONT contrast CPGA ceramic pin grid array CPU central processing unit DAC digital-to-analog converter DACK DMA acknowledge DC direct current DIP dual in-line package DLAB Divisor Latch Address bit DMA direct memory access
DMAC DMA controller DOS disk operating system DRAM dynamic RAM DTE data terminal equipment ECC error checking and correction EGA Enhanced Graphics Adapter EPROM erasable and programmable
ROM
EVGA Enhanced Video Graphics
Array
F Fahrenheit FCC Federal Communications
Commission
FG frame ground FM frequency modulation FRU field-replaceable unit GB gigabyte GND ground HEX hexadecimal HGA Hercules Graphics Adapter Hz hertz IC integrated circuit ID identification IDE intelligent device electronics IDTR interrupt descriptor table
register
in. inch INTA interrupt acknowledge IPB illustrated parts breakdown IRR Interrupt Request register ISA Industry Standard Architecture ISR In Service register I/O input/output IPC integrated peripheral controller ips inches per second IRQ interrupt request
xiv Abbreviations
K kilo (1024) k kilo (1000) KB kilobyte kg kilogram kHz kilohertz lb pound LED light-emitting diode LSB least-significant bit LSI large-scale integration M mega mA milliamps max maximum MB megabyte MDA Monochrome Display Adapter MFM modified frequency modulation MHz megahertz mm millimeter
QFP quad flat pack RAM random-access memory RAMDAC RAM digital-to-analog RAS row address strobe RGB red green blue RGBI red green blue intensity ROM read-only memory rpm revolutions per minute R read RTC real-time clock R/W read/write S slave SG signal ground SIMM single inline memory module SVGA Super Video Graphics Array SW switch
TAC Technical Assistance Center ms millisecond MSB most-significant bit NASC National Authorized Service
Center
NC not connected NMI Non-maskable Interrupt ns nanosecond NSRC National Service Response
Center
PAL programmable array logic PC personal computer PCB printed circuit board PFP plastic flat package PIO parallel input/output pixel picture element PLCC plastic lead chip carrier PLL phase lock loop p-p peak-to-peak
TSC Technical Support Center
TTL transistor/transistor logic
tpi tracks per inch
V volt
Vdc volts, direct current
VESA video electronics standards
association
VGA Video Graphics Array
VRAM virtual RAM
W watt
W write
PPI programmable peripheral
interface
PROM programmable ROM

Contents

Page
Section 1 Technical Information
Liquid Crystal Display (LCD)............................................................................... 1-2
Keyboard.............................................................................................................. 1-3
Versa SurePoint.................................................................................................... 1-3
LED Status Bar.................................................................................................... 1-3
Battery ................................................................................................................. 1-4
System Board....................................................................................................... 1-5
CPU ............................................................................................................. 1-5
v
Memory........................................................................................................ 1-5
Video Controller ........................................................................................... 1-6
Input/Output Controller................................................................................ 1-7
Keyboard Controller..................................................................................... 1-8
PCMCIA Controller (CL-PD6720)............................................................... 1-8
I/O Addressing ............................................................................................. 1-8
Interrupt Controller ...................................................................................... 1-9
Power Management Overview.............................................................................. 1-10
Section 2 Setup and Operation
Replacing a Battery Pack...................................................................................... 2-3
LED Status Bar.................................................................................................... 2-5
SurePoint and Selection Buttons........................................................................... 2-7
Fn Key.................................................................................................................. 2-7
Reset Button......................................................................................................... 2-8
Accessing the SCU............................................................................................... 2-9
vi Contents
Using the SCU...................................................................................................... 2-10
SCU Menu Options .............................................................................................. 2-10
Standard....................................................................................................... 2-10
Preferences................................................................................................... 2-12
VGA............................................................................................................. 2-14
Memory........................................................................................................ 2-14
Power Management...................................................................................... 2-14
Default Setup................................................................................................ 2-14
Exit .............................................................................................................. 2-15
Section 3 Power Management
Accessing the Power Management Utility ............................................................. 3-1
Menu Options ....................................................................................................... 3-3
Controls........................................................................................................ 3-3
System Options............................................................................................. 3-4
Device Setup ................................................................................................ 3-5
Default Setup................................................................................................ 3-6
Exit .............................................................................................................. 3-6
Hardware Power Management.............................................................................. 3-7
System Power Management.................................................................................. 3-7
Device Status........................................................................................................ 3-8
Section 4 Options
Modem Card Connection...................................................................................... 4-2
Parallel Devices .................................................................................................... 4-5
Serial Devices....................................................................................................... 4-6
Keyboard.............................................................................................................. 4-6
Mouse.................................................................................................................. 4-7
Monitor................................................................................................................ 4-8
Moving the Keyboard........................................................................................... 4-10
Upgrading Memory .............................................................................................. 4-12
Contents vii
Upgrading the Hard Disk...................................................................................... 4-13
Replacing the Keyboard........................................................................................ 4-15
Running Setup...................................................................................................... 4-16
Memory Modules ......................................................................................... 4-16
Hard Disk..................................................................................................... 4-17
Section 5 Troubleshooting and Repair
Cleaning ............................................................................................................... 5-2
Routine Checks .................................................................................................... 5-2
Problem Checklist ................................................................................................. 5-4
Diagnosing and Solving Problems......................................................................... 5-4
Error Messages............................................................................................. 5-6
Beep Codes .................................................................................................. 5-8
Removing the Battery Pack................................................................................... 5-9
Removing the Keyboard ....................................................................................... 5-10
Removing the Memory Module............................................................................. 5-13
Removing the Hard Disk....................................................................................... 5-14
Removing the System Cover and LCD Assembly.................................................. 5-15
Removing the CMOS or Bridge Battery................................................................ 5-17
Removing the Inverter Circuit Board .................................................................... 5-18
Removing the System Board................................................................................. 5-19
Removing the LED Circuit Board......................................................................... 5-20
Removing the LCD Cover .................................................................................... 5-21
Separating the LCD Assembly from the System Cover.......................................... 5-22
viii Contents
Figures
Figure Title Page
1-1 Versa S Components ..................................................................................... 1-1
1-2 Versa S Series (Rear View) ...........................................................................1-2
1-3 LED Status Bar.............................................................................................1-3
2-1 Opening the LCD Panel.................................................................................2-1
2-2 Attaching the AC Adapter..............................................................................2-2
2-3 Connecting the Diskette Drive .......................................................................2-2
2-4 Turning on the Versa S..................................................................................2-3
2-5 Removing the Battery Pack............................................................................ 2-3
2-6 Locating the Tabs and Grooves......................................................................2-4
2-7 Inserting the Battery Pack..............................................................................2-4
2-8 Control and Button Locations........................................................................2-5
2-9 LED Status Bar.............................................................................................2-5
2-10 SurePoint and Selection Buttons....................................................................2-7
2-11 SCU Main Menu............................................................................................2-9
3-1 Power Management Menu.............................................................................3-2
4-1 PCMCIA Card Slots......................................................................................4-2
4-2 Installing the Modem Card ............................................................................. 4-3
4-3 Connecting the Adapter.................................................................................4-3
4-4 Telephone Line Connection ...........................................................................4-4
4-5 Modem and Telephone Connection................................................................ 4-5
4-6 Connecting a Parallel Device.......................................................................... 4-5
4-7 Attaching a Serial Device...............................................................................4-6
4-8 Attaching the External Keyboard ................................................................... 4-7
4-9 Connecting the Mouse................................................................................... 4-8
4-10 Connecting the External Monitor................................................................... 4-9
4-11 Locating the Retainer..................................................................................... 4-10
4-12 Removing the Retainer...................................................................................4-10
4-13 Lifting the Keyboard...................................................................................... 4-11
4-14 Leaning the Keyboard against the LCD.......................................................... 4-11
4-15 Locating the Memory Module Socket............................................................4-12
4-16 Installing the Module.....................................................................................4-13
Contents ix
4-17 Locating the Hard Disk .................................................................................. 4-13
4-18 Removing the Screw......................................................................................4-14
4-19 Removing the Hard Disk................................................................................ 4-14
4-20 Installing the Hard Disk .................................................................................4-15
4-21 Positioning the Keyboard...............................................................................4-15
4-22 Inserting the Retainer ..................................................................................... 4-16
5-1 Locating the CMOS Clear Switch..................................................................5-3
5-2 Removing the Battery Pack............................................................................ 5-10
5-3 Locating the Plastic Retainer.......................................................................... 5-10
5-4 Removing the Retainer...................................................................................5-11
5-5 Lifting the Keyboard...................................................................................... 5-11
5-6 Leaning the Keyboard Against the LCD......................................................... 5-12
5-7 Disconnecting the Keyboard Cables...............................................................5-12
5-8 Locating the Memory Module........................................................................ 5-13
5-9 Removing the Memory Module......................................................................5-13
5-10 Locating the Hard Disk .................................................................................. 5-14
5-11 Removing the Screw......................................................................................5-14
5-12 Removing the Hard Disk................................................................................ 5-15
5-13 Removing System Cover Screw (Rear)..........................................................5-15
5-14 Removing System Cover Screws (Bottom) ....................................................5-16
5-15 Removing System Cover Screws (Top).......................................................... 5-16
5-16 Removing the System Cover and LCD Assembly...........................................5-17
5-17 Removing the CMOS and Bridge Batteries....................................................5-18
5-18 Removing the Inverter Circuit Board ............................................................. 5-18
5-19 Removing the System Board.......................................................................... 5-19
5-20 Removing the LED Circuit Board..................................................................5-20
5-21 Removing LCD Cover Screws.......................................................................5-21
5-22 Separating the LCD Assembly and System Cover...........................................5-22
5-23 Versa S Illustrated Parts Breakdown .............................................................. 5-25
x Contents
Tables
Table Title Page
1-1 Versa S Supported Chipsets........................................................................... 1-5
1-2 Versa S System Memory Map........................................................................1-6
1-3 Versa S Video Modes.................................................................................... 1-6
1-4 Parallel Port Addresses and Interrupts............................................................ 1-7
1-5 Serial Port Addresses and Interrupts ..............................................................1-7
1-6 Versa S I/O Address Map..............................................................................1-8
1-7 Versa S Series Interrupt-Level Assignments ................................................... 1-10
1-8 Specifications.................................................................................................1-11
3-1 Status of Devices in Auto Suspend Mode.......................................................3-8
3-2 Status of Devices in Power Saving Mode....................................................... 3-8
5-1 NEC Service and Information Telephone Numbers ........................................ 5-1
5-2 Problems and Solutions.................................................................................. 5-5
5-3 Error Messages.............................................................................................. 5-7
5-4 Beep Codes ...................................................................................................5-8
5-5 Disassembly................................................................................................... 5-8
5-6 Versa S Field-Replaceable Parts List.............................................................. 5-23
5-7 Documentation..............................................................................................5-24
A-1 Serial Interface Connector ............................................................................. A-1
A-2 Parallel Interface Connector ........................................................................... A-2
A-3 VGA Interface Connector..............................................................................A-3
A-4 Keyboard/Mouse Connector.......................................................................... A-3
A-5 DC Power Connector .................................................................................... A-4
A-6 Diskette Drive Connector ..............................................................................A-4
A-7 Hard Disk Connector.....................................................................................A-5
Contents xi
Section 1

Technical Information

The NEC Versa™ S series sub-notebooks integrate Intel's SL Enhanced 486 microproces­sor. The systems offer a unique transportable unit in the following models:
n Versa S/50C 486DX2-50 CPU, thin-film-transistor (TFT) color LCD, 4-MB
standard RAM, 8 KB cache RAM, 128-KB ROM, 260-MB hard disk
n Versa S/33C 486SX-33 CPU, TFT color LCD, 4-MB standard RAM, 8 KB
cache RAM, 128-KB ROM, 210-MB hard disk
n Versa S/33D 486SX-33 CPU, double-scan super-twist nematic (DSTN) color
LCD, 4-MB standard RAM, 8 KB cache RAM, 128-KB ROM, 210-MB hard disk
n Versa S/33M 486SX-33 CPU, monochrome LCD, 4-MB standard RAM, 8
KB cache RAM, 128-KB ROM, 210-MB hard disk (125-MB – international models).
Figure Section 1-1 shows the components on the front and side views of the Versa S.
Reset Button
LCD
Power Button
PCMCIA Slot
Latch
Figure Section 1-1 Versa S Components
The following system upgrades must be completed by authorized customer engineers or an authorized service center:
n additional memory (up to 12 MB) n 260-MB hard disk.
System upgrade procedures are described in Section 4, Options.
1-2 Technical Information
HARDWARE OVERVIEW
The base unit includes a monochrome or color LCD panel, a 210- or 260-MB hard disk, an external 1.44-MB diskette drive, a battery pack, and a PS/2 compatible 80-key keyboard. A 81-key keyboard is used for U.K. and Germany.
One memory card slot is available for the addition of a 4- or 8-MB memory card. Two Per­sonal Computer Memory Card International Association (PCMCIA) card slots, supported by the Cirrus Logic CL-PD6720 PCMCIA chip set, allow for the addition of either two Type 2 PCMCIA cards or one Type 3 PCMCIA card.
Figure Section 1-2 shows the I/O interface ports on the system's rear panel. These include one combined 6-pin PS/2-style keyboard and mouse port, one 15-pin Super VGA port, one 9-pin (RS-232C) serial port, one 25-pin enhanced printer (parallel) port, and one 3-pin power connector port.
Power Port
Keyboard/ Mouse Port
Parallel Port
Diskette Drive Port
VGA Monitor Port
Serial Port
Figure Section 1-2 Versa S Series (Rear View)
Liquid Crystal Display (LCD)
The Versa S comes with one of three different LCD panels. Each panel provides a 9.5-inch viewing area.
n The thin-film transistor (TFT) color LCD has a 640 x 480 resolution, is backlit,
and supports up to 4096 colors.
n The Dualscan Super-Twisted Nematic (DSTN) color LCD has a 640 x 480 reso-
lution, is backlit, and supports up to 256 colors.
n The DSTN monochrome LCD (outside of the U.S. only) has a 640 x 480 resolu-
tion, is backlit, and supports 64 shades of gray.
A VGA port on the system's rear panel allows the user to connect an optional monochrome or color external display to the system. The computer supports the LCD and external dis­play simultaneously when using a resolution of 640 x 480 or lower.
Technical Information 1-3
Power-saving features for controlling the LCD's backlighting include the ROM-based hot key Fn F5, Fn F6, and Auto Setup power management settings. See Section 2, Setup and Operation, for information on using these settings. In addition, the automatic LCD status sense feature conserves the backlight. When the LCD is closed, the backlight shuts off, saving battery power.
Keyboard
The built-in, 80-key keyboard (U.S.) or 81-key keyboard (UK and Germany) uses the stan­dard QWERTY-key layout. The keyboard provides 12 function keys and 8 cursor control keys, with an Fn key for ROM-based key functions. The numeric keypad is embedded in the standard key layout.
Versa SurePoint
The Versa SurePoint™ pointing device performs the functions of a mouse. It is located between the G, H, and B keys. Pressing the Versa SurePoint in a specific direction moves the cursor in that direction. The two selection buttons below the keyboard act like the left and right mouse buttons on a two-button mouse.
The Versa SurePoint is the system's default pointing device unless a PS/2 mouse is installed. If an external mouse is installed, then the Versa SurePoint is deactivated.
LED Status Bar
The LED status bar contains eight light emitting diodes (LEDs) that light or blink to show the status of Versa S components. Figure Section 1-3 shows the locations of the LEDs on the status bar. A description of the LEDs follow.
Num
Power
Charge
Power
Mgmt
Hard Disk Drive
Caps Lock
Scroll Lock
A
Diskette Drive
Figure Section 1-3 LED Status Bar
Lock
1-4 Technical Information
n Power LED — lights yellow or green.
When steady green, the computer is running on AC power.
When steady yellow, the computer is running on battery power and battery
power is sufficient.
When blinking yellow, the computer is running on battery power and battery
power is low.
When off, the computer is in Suspend mode or the computer power is off.
n Charge LED — lights orange.
When lit continuously, the battery is charging.When blinking orange, the battery has malfunctioned.When off, no battery is installed, the AC adapter is not attached, or the battery
is fully charged.
n Power Management LED — lights green
When lit continuously, Power Management features are enabled.When blinking, the system is in Suspend mode.When off, Power Management features are disabled.
n Hard Disk LED — lights green when the hard disk is being accessed. Avoid
turning off the Versa S when this LED is lit.
n Diskette Drive LED — lights green when a diskette is being accessed. n Caps Lock LED — lights green when the Caps Lock is in effect. n Scroll Lock LED — lights green when the scroll lock key is active. n Num Lock LED — lights green when Num Lock mode is in effect.
Battery
The system uses a nickel metal hydride (NiMH) battery as its transient power source. The battery pack installs in the compartment at the bottom of the base unit. The battery pack lasts approximately 2.0 hours under typical operating conditions and recharges in approxi­mately 1.5 hours. A bridge battery is provided as an emergency backup. It backs up mem­ory and system status for up to 5 minutes under Suspend mode.
Technical Information 1-5
System Board
The system board is inside the base unit. It contains system components including the CPU, system memory, and I/O subsystems.
Refer to Table Section 1-1 for a summary of the chipsets supported by the Versa S. For a list of system board connector descriptions, see Appendix A. System board specifications are listed in at the end of this section.
Table Section 1-1 Versa S Supported Chipsets
Chip Manufacturer Description Technology
i486SX-33 Intel 33 MHz CPU 208-pin QFP* i486DX2-50 Intel 50 MHz CPU 208-pin QFP* PT86C368 PicoPower System Controller 208-pin QFP* FDC37C665 Standard MicroSystem
Corporation 28F010 Intel 128-KB Flash ROM 32-pin PLCC** CL-GD6235 Cirrus Logic VGA Controller 208-pin QFP* 80C51SL Intel Keyboard Controller 44-pin QFP* CL-PD6720-B Cirrus Logic PCMCIA Controller 208-pin QFP*
*QFP: quad flat package **PLCC: plastic lead chip carrier
CPU
Peripheral Controller 100-pin QFP*
The CPU is an Intel SL Enhanced i486 chip (DX2-50 or SX-33). The CPU controls im­portant functions including power management, direct drive bus interface, and memory management. It has a 32-bit internal data bus and requires an operating voltage of 3.3 volts.
The CPU’s microprocessor has an internal on-chip cache controller with 8-KB cache mem­ory. The DX2-50's floating point unit (FPU) provides an internal math coprocessor.
Memory
The system board provides 4 MB of standard random access memory (RAM). Optional memory cards with a value of 4- or 8-MB can be added to increase system memory up to 12 MB.
The system board also provides 128 KB of read-only memory (ROM). The 28F010 flash ROM contains the system, power management, and video BIOS.
1-6 Technical Information
The Versa S supports system and video BIOS shadowing. When shadowing is enabled (de­fault settings), the BIOS is copied from ROM to RAM which speeds up system perform­ance. These settings can be changed in the SCU (see Section 2, Setup and Operation). Table Section 1-2 shows the system's memory map.
Table Section 1-2 Versa S System
Memory Map
Address Function
FFFFF | F0000
| E8000
| E0000
| C8000
| C0000
System BIOS (shadow) (64 KB)
MAXIMIZER (shadow) (32 KB)
Video BIOS (shadow enabled) (32 KB)
ISA space available
Video BIOS (shadow enabled) (32 KB)
Video Controller
The Cirrus CL-GD6235 video controller integrates a 32-bit local bus video. The system ships with 512 KB VRAM supporting LCD video modes up to 640 x 480 resolution with 256 colors (color model) or 64 shades of gray (monochrome model).
The system provides a 15-pin D-SUB connector to allow connecting an external display to the system. The system supports external display video modes up to 1024 x 768 with 16 colors or 800 x 600 x 256 color (non-interlaced). System video also supports simultaneous external display and LCD viewing. Table Section 1-3 shows the supported Versa S video modes.
Table Section 1-3 Versa S Video Modes
Mode (Hex)
12 640 x 480 8 x 16 30 x 30 16/256 25.0 31.5 60.0 58/6A * 800 x 600 8 x 16 100 x 37 16/256 40.0 37.8 60.0 5C * 800 x 600 8 x 16 100 x 37 256/256 40.0 37.9 60.0 5D * 1024 x 768 8 x 16 128 x 48 16 65.0 48.3 60.0
Pixel Resolution
Character Size
Columns /Rows
Colors (K)
Video Clock (MHz)
Horizontal Freq (kHz)
Vertical
Freq (Hz)
Technical Information 1-7
5F 640 x 480 8 x 16 80 x 30 256/256 25.0 31.5 60.0
NOTE: * External display only.
Input/Output Controller
The FDC37C665 input/output (I/O) controller provides the following interfaces:
n RS-232C serial port n parallel (printer) port n diskette drive n IDE hard disk.
The user selects between three parallel interface modes using Auto Setup. These include unidirectional, bidirectional or enhanced. Unidirectional mode sends data output from the standard ISA port only. Bidirectional mode sends data using the standard ISA port or PS/2 technology. Enhanced mode enables high speed data transmission to occur using either the unidirectional or bidirectional modes.
Parallel port addresses and interrupts are listed in Table Section 1-4. Pin locations for the parallel interface are listed in Appendix A.
Table Section 1-4 Parallel Port Addresses and Interrupts
Starting I/O Address Interrupt Level
378h (LPT 1) * IRQ07 278h (LPT 2) IRQ05 3BCh (LPT 3) IRQ07
*Default
The serial port consists of a 16450 compatible serial port controller with a programmable baud rate within 50/115.2 K bps. See Table Section 1-5 for the available addresses and in­terrupts.
Table Section 1-5 Serial Port Addresses and Interrupts
Starting I/O Address Interrupt Level
3F8h (COM 1) * IRQ04 2F8h (COM 2) IRQ03 3E8h (COM 3) IRQ04 2E8h (COM 4) IRQ03
1-8 Technical Information
*Default
Keyboard Controller
The keyboard controller (80C51SL) supports a PS/2-style keyboard, mouse and security features such as keyboard hot keys and password. Refer to Appendix A for keyboard inter­face connector pin assignments.
The input clock cycle is 12 MHz. Data transmits between the controller and the keyboard through a bidirectional serial interface. The controller receives serial data, checks for parity errors, converts scan codes, and writes the data to the output buffer.
When data is written to the output buffer, the controller generates an interrupt (IRQ01 or IRQ12) and requests the CPU to receive the data. The controller automatically adds an even parity bit to the data sent and waits for a response. The device must acknowledge that the data was successfully received by sending a response to the controller for each byte of data received.
PCMCIA Controller (CL-PD6720)
The PCMCIA interface uses a standard Exchangeable Card Architecture (ExCA) connector allowing the user to choose from an array of optional modem or network cards. The con­troller interfaces with the ISA bus, PCMCIA card socket and configuration registers to provide:
n memory address mapping, I/O address mapping n power management for each PCMCIA card socket, controlled through power and
RESETDRV control registers
n the elimination of interrupt conflicts using interrupt steering.
I/O Addressing
The CPU works in conjunction with I/O devices using I/O mapping. Refer to Table Section 1-6 for hex addresses.
Table Section 1-6 Versa S I/O Address Map
Address (Hex) I/O Device Name
000-00F DMA Controller 1 020-03F Interrupt Controller 1 040-043 Timer 1 048-04B Timer 2 060-064 Keyboard Controller
Technical Information 1-9
Table Section 1-6 Versa S I/O Address Map
Address (Hex) I/O Device Name
061 NMI Status 070 NMI Mask
070-076 Real-time Clock 081H-083H DMA Page Register 087H DMA Page Register 089H-08BH DMA Page Register 08FH DMA Page Register 092H Port 92 0C0H-0CEH DMA Channel 0D0H-0DEH DMA Controller 2 0102H Parallel Port Configuration 0278H-027AH LPT2 02F8H-02FFH Serial Controller Port B 0372H-0377H Diskette Drive Controller 0378H-037AH LPT1 03BCH-03BEH LPT3 03F0H-03F5H Diskette Drive Controller Port Status 03F8H-03FFH Serial Controller Port A 0461H Port 461 EISA mode 0C00H Extended System Port 1 0C01H Extended System Port 2 0C02H Extended System Port 3 0C03H Extended System Port 4 0C10H Extended System Port 6 03E0-03E1 PCMCIA
Interrupt Controller
The interrupt controller operates as an interrupt manager for the CPU. The controller re­ceives requests from peripherals and issues interrupt requests to the CPU. Interrupt-level assignments 0 through 15 are listed in Table Section 1-7, in order of decreasing priority.
1-10 Technical Information
Table Section 1-7 Versa S Series Interrupt-Level Assignments
Controller Master/Slave
Master 0 IRQ00 Counter/Timer 1 Master 1 IRQ01 Keyboard Master 2 IRQ02 Cascade for 8 to 15 Slave 3 IRQ08 Real-time Clock Slave 4 IRQ09 VGA Slave 5 IRQ10 Reserved Slave 6 IRQ11 Reserved (PCMCIA) Slave 7 IRQ12 PS/2 Mouse* Slave 8 IRQ13 Math Coprocessor (built into CPU) Slave 9 IRQ14 Hard Disk Controller Slave 10 IRQ15 Reserved Master 11 IRQ03 COM2, COM4* Master 12 IRQ04 COM1, COM3* Master 13 IRQ05 Parallel Port 2
Priority
Name
Device
Master 14 IRQ06 Diskette Drive Controller* Master 15 IRQ07 Parallel Port 1*
*Industry standard locations
Power Management Overview
The Versa system uses power management features to prolong system battery life. The CPU (SL Enhanced i486) implements a System Management Interrupt (SMI) function
that works transparently with the operating system and application software. When acti­vated, the processor mode changes to real mode. Unique "SM-RAM" containing power management software is mapped at address 30000h — 3FFFFh. This activity is inherent to the system and does not require any adjustment to the operating system or application soft­ware.
The power management program is located in ROM at location E8000h — EFFFFh. In on­board DRAM, the software is physically allocated at the same location.
Use the System Configuration Utility to select specific power management options. For in­formation on how to select these options, see Section 3, Power Management.
Technical Information 1-11
SPECIFICATIONS
Table Section 1-8 provides a complete list of Versa E series system specifications.
Table Section 1-8 Specifications
Item Specification
Chassis Size Width: 10.76 in. (276 mm) Depth: 8.26 inches (212 mm) Height:
Weight:
Keyboard PS/2 compatible, 80-key standard (U.S.), 81-key
Fn Key for ROM-based functions Device Slots One internal 2 1/2-inch x 0.75-inch high slot, right
One 3 1/2-inch x 0.75-inch high slot, bottom-access,
— Versa S/50C, S/33C: 1.63 in. (42 mm — Versa S/33D: )1.52 in. (39 mm) — Versa S/33M: 1.4 in. (36 mm)
— Versa S/50C: 5.07 lb (2.30 kg) — Versa S/33C: 4.71 lb (2.14 kg) — Versa S/33D: 4.71 lb (2.14 kg) — Versa S/33M: 4.23 lb (1.92 kg) (Exact weight depends on options)
standard (UK and Germany)
side access, for standard hard disk
for primary battery One memory slot for optional memory card Two PCMCIA slots that support up to two optional
cards oriented one on top of the other Power AC Adapter: Input Voltage: 90 to 240 VAC, 50 or 60
Hz, 1200 mA DC/DC Adapter: On board Battery Pack: 12 VDC, 1800 mA Battery Life: approximately 2 hours under typical
operating conditions Recharging time: approximately 1.5 hours Bridge battery: backs up memory contents and
system status for up to 5 minutes under Suspend
mode.
1-12 Technical Information
Table Section 1-8 Specifications
Item Specification
System Board Flash ROM 128 KB: 28F010 System BIOS: 64 KB Video BIOS: 32 KB Power Management: 32 KB I/O Interface Connectors 6-pin PS/2 External Keyboard/mouse Connector 9-pin Serial Connector 15-pin VGA Connector 25-pin Parallel Connector 3-pin DC-In Power Connector 72-pin Internal Memory Connector 44-pin IDE Connector 26-pin External Diskette Drive Connector CPU SL Enhanced i486 DX2-50 or SX-33 Clock Speed 50 MHz or 33 MHz Memory System Memory 4 MB resident on system board Optional Expandable to 12 MB Video RAM 512 KB Cache RAM 8 KB Display Monochrome Model Technology: FTN, backlit, monochrome LCD Resolution: 640 x 480 pixels Display: 64 shades of gray Dot Pitch: 0.3 mm Viewing Area: 9.5 in. screen Interface: Super VGA Color Models Technology:
Resolution: 640 x 480 pixels
— Versa S/50C, S/33C: TFT, backlit, color LCD — Versa S33DDSTN, backlit, color LCD
Technical Information 1-13
Table Section 1-8 Specifications
Item Specification
Display:
— Versa S/50C, S/33C: 4096 colors — Versa S/33D: 256 colors
Dot Pitch: 0.3 mm
Viewing Area: 9.5 in. screen Interface: Super VGA Internal Device Support Diskette Drive External, 3 1/2-inch, 1.44-MB Hard Disks 210-MB (Versa S/33C, S/33D, S/33M) 260-MB (Versa S/50C) Controller: IDE controller integrated on hard disk Software Standard MS-DOS version 6.2 Windows version 3.1 APM drivers Mouse drivers Systemsoft CardSoft PCMCIA Auxiliary Windows Video Drivers (AWD) NEC Communications Assistant Versa S on-line help Windows and DOS on-line help Recommended Environment Operation Temperature: 41_ to 95_F (5_ to 35_C) Relative Humidity: 20% to 80% (No condensation) Storage Temperature: -4_ to 104_F (-20_ to 40_C) Relative Humidity: 10% to 80% (No condensation) Administrative Compliance UL 1950
CSA C22.2 No. 220
FCC Class B
TUV EN60950: 1988
C.R.C., c.1374
VDE 0871/6.78
Section 2

Setup and Operation

This section provides setup and operation information for the Versa S (including cabling, power-on verification, and using the System Configuration Utility).
UNPACKING THE SYSTEM
Find an area away from devices that generate strong magnetic fields (electric motors, transformers, etc.). Place the shipping carton on a sturdy surface and carefully unpack the system. The carton includes the base unit, external diskette drive, AC adapter, AC power cable, software diskettes, spare SurePoint caps, and user documentation.
SETUP
Perform the following procedure to set up the Versa S.
1. Open the LCD panel.
Figure Section 2-1 Opening the LCD Panel
2. Connect the AC adapter cable to the power port on the back of the system.
LCD Latch
2-2 Setup and Operation
3. Connect one end of the AC power cable to the AC adapter and the other end to a
properly grounded wall outlet.
The LED on the AC adapter and the Charge LED on the system lights.
Figure Section 2-2 Attaching the AC Adapter
Power Port
AC Adapter
AC Power Cable
4. Connect the diskette drive (optional) to the system as follows:
n Align the diskette drive cable connector with the diskette drive port on the
system.
n Press the connector into the port until it clicks into place.
Cable Connector
Diskette
Figure Section 2-3 Connecting the Diskette Drive
Drive Port
Setup and Operation 2-3
5. Press the power button to turn on the system.
NOTE: If operating on DC power, verify that the system has a charged battery pack installed.
Power Button
Figure Section 2-4 Turning on the Versa S
Replacing a Battery Pack
Follow these instructions to replace a battery pack.
1. Close the LCD panel securely. Disconnect any external options.
2. Turn the Versa S upside down.
3. Locate the battery release latch on the bottom of the system and slide it back.
4. Lift up and remove the battery pack.
Battery Pack
Figure Section 2-5 Removing the Battery Pack
Battery Release Latch
2-4 Setup and Operation
5. Locate the tabs on the end of the new battery pack. Fit the tabs into the grooves
inside the compartment.
Battery Pack
Grooves
Battery Pack Tabs
Figure Section 2-6 Locating the Tabs and Grooves
6. Lower the battery pack into the compartment. Press it down until the battery pack
latch clicks and locks the battery in place.
Figure Section 2-7 Inserting the Battery Pack
7. Turn the Versa S right side up and reconnect the external options.
Setup and Operation 2-5
OPERATING CONTROLS
The following section describes system controls. Refer to Figure Section 2-8 to locate sys­tem controls and buttons.
LCD
LED Status Bar
Keyboard
Reset Button
Fn Key
Figure Section 2-8 Control and Button Locations
LED Status Bar
The LED status bar contains eight light emitting diodes (LEDs) that light or blink to show the status of Versa S components. Figure Section 2-9 identifies the LEDs on the status bar. A description of the LEDs follow.
Num
Power
Charge
Power
Mgmt
Hard Disk Drive
Caps Lock
Scroll Lock
A
Diskette Drive
Figure Section 2-9 LED Status Bar
Lock
2-6 Setup and Operation
n Power LED — lights yellow or green.
When steady green, the computer is running on AC power.
When steady yellow, the computer is running on battery power and battery
power is sufficient.
When blinking yellow, the computer is running on battery power and battery
power is low.
When off, the computer is in Suspend mode or the computer power is off.
n Charge LED — lights orange.
When lit continuously, the battery is charging.When blinking orange, the battery has malfunctioned.When off, no battery is installed, the AC adapter is not attached, or the battery
is fully charged.
n Power Management LED — lights green
When lit continuously, Power Management features are enabled.When blinking, the system is in Suspend mode.When off, Power Management features are disabled.
n Hard Disk LED — lights green when the hard disk is being accessed. Avoid
turning off the Versa S when this LED is lit.
n Diskette Drive LED — lights green when a diskette is being accessed. n Caps Lock LED — lights green when the Caps Lock is in effect. n Scroll Lock LED — lights green when the scroll lock key is active. n Num Lock LED — lights green when Num Lock mode is in effect.
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