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

xi

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, hardware 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.

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.

xiii

Abbreviations

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)	QFP	quad flat pack
k	kilo (1000)	RAM	random-access memory
KB	kilobyte	RAMDAC	RAM digital-to-analog
kg	kilogram	RAS	row address strobe
kHz	kilohertz	RGB	red green blue
lb	pound	RGBI	red green blue intensity
LED	light-emitting diode	ROM	read-only memory
LSB	least-significant bit	rpm	revolutions per minute
LSI	large-scale integration	R	read
M	mega	RTC	real-time clock
mA	milliamps	R/W	read/write
max	maximum	S	slave
MB	megabyte	SG	signal ground
MDA	Monochrome Display Adapter	SIMM	single inline memory module
MFM	modified frequency modulation	SVGA	Super Video Graphics Array
MHz	megahertz	SW	switch
mm	millimeter	TAC	Technical Assistance Center
ms	millisecond	TSC	Technical Support Center
MSB	most-significant bit	TTL	transistor/transistor logic
NASC	National Authorized Service	tpi	tracks per inch
	Center	V	volt
NC	not connected	Vdc	volts, direct current
NMI	Non-maskable Interrupt	VESA	video electronics standards
ns	nanosecond		association
NSRC	National Service Response	VGA	Video Graphics Array
	Center	VRAM	virtual RAM
PAL	programmable array logic	W	watt
PC	personal computer	W	write
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
PPI	programmable peripheral
	interface
PROM	programmable ROM

	v
Contents
	Page
Preface ........................................................................................................................	xi
Abbreviations ..............................................................................................................	xiii
Section 1 Technical Information
Hardware Overview.....................................................................................................	1-2
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
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
Specifications ..............................................................................................................	1-11
Section 2 Setup and Operation
Unpacking the System .................................................................................................	2-1
Setup...........................................................................................................................	2-1
Replacing a Battery Pack ......................................................................................	2-3
Operating Controls ......................................................................................................	2-5
LED Status Bar ....................................................................................................	2-5
SurePoint and Selection Buttons ...........................................................................	2-7
Fn Key..................................................................................................................	2-7
Reset Button.........................................................................................................	2-8
Power-on Self-Test (Post) ...........................................................................................	2-8
System Configuration Utility........................................................................................	2-9
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
Power Management Utility ..........................................................................................		3-1
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
APM Program .............................................................................................................		3-6
Hardware Power Management..............................................................................		3-7
System Power Management ..................................................................................		3-7
Device Status........................................................................................................		3-8
Extending Battery Life.................................................................................................		3-9
Section 4	Options
PCMCIA Cards ...........................................................................................................		4-1
Modem Card Connection......................................................................................		4-2
External Devices..........................................................................................................		4-5
Parallel Devices ....................................................................................................		4-5
Serial Devices .......................................................................................................		4-6
Keyboard..............................................................................................................		4-6
Mouse ..................................................................................................................		4-7
Monitor	................................................................................................................	4-8
Internal Upgrades ........................................................................................................		4-9
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
Maintenance ................................................................................................................	5-2
Cleaning ...............................................................................................................	5-2
Routine Checks ....................................................................................................	5-2
CMOS Clear Switch ....................................................................................................	5-3
Troubleshooting ..........................................................................................................	5-4
Problem Checklist.................................................................................................	5-4
Diagnosing and Solving Problems .........................................................................	5-4
Error Messages.............................................................................................	5-6
Beep Codes ..................................................................................................	5-8
Disassembly and Reassembly .......................................................................................	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
Illustrated Parts Breakdown.........................................................................................	5-23

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 microproce s- sor. The systems offer a unique transportable unit in the following models:

nVersa S/50C ¾ 486DX2-50 CPU, thin-film-transistor (TFT) color LCD, 4-MB standard RAM, 8 KB cache RAM, 128-KB ROM, 260-MB hard disk

nVersa S/33C ¾ 486SX-33 CPU, TFT color LCD, 4-MB standard RAM, 8 KB cache RAM, 128-KB ROM, 210-MB hard disk

nVersa S/33D ¾ 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

nVersa S/33M ¾ 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

Latch

Power

Button PCMCIA

Slot

Figure Section 1-1 Versa S Components

The following system upgrades must be completed by authorized customer engineers or an authorized service center:

nadditional memory (up to 12 MB)

n260-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 210or 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			VGA
	Port				Serial
		Parallel		Monitor
					Port
	Keyboard/	Port	Diskette	Port
	Mouse		Drive
	Port		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.

nThe thin-film transistor (TFT) color LCD has a 640 x 480 resolution, is backlit, and supports up to 4096 colors.

nThe Dualscan Super-Twisted Nematic (DSTN) color LCD has a 640 x 480 resolution, is backlit, and supports up to 256 colors.

nThe DSTN monochrome LCD (outside of the U.S. only) has a 640 x 480 resolution, 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
	Caps	Scroll Lock
		Lock
	Power Lock
	Mgmt
	Charge
	Power
		A
	Hard Disk	Diskette
		Drive
	Drive
	Figure Section 1-3	LED Status Bar

1-4 Technical Information

n Power LED — lights yellow or green.

¾When steady green, the computer is running on AC power.

¾When steady yellow, the computer is running on battery power and battery power is sufficient.

¾When blinking yellow, the computer is running on battery power and battery power is low.

¾When off, the computer is in Suspend mode or the computer power is off.

nCharge LED — lights orange.

¾When lit continuously, the battery is charging.

¾When blinking orange, the battery has malfunctioned.

¾When off, no battery is installed, the AC adapter is not attached, or the battery is fully charged.

nPower Management LED — lights green

¾When lit continuously, Power Management features are enabled.

¾When blinking, the system is in Suspend mode.

¾When off, Power Management features are disabled.

nHard Disk LED — lights green when the hard disk is being accessed. Avoid turning off the Versa S when this LED is lit.

nDiskette Drive LED — lights green when a diskette is being accessed.

nCaps Lock LED — lights green when the Caps Lock is in effect.

nScroll Lock LED — lights green when the scroll lock key is active.

nNum 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	Peripheral Controller	100-pin QFP*
		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

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
|	System BIOS (shadow) (64 KB)
F0000
|	MAXIMIZER (shadow) (32 KB)
E8000
|	Video BIOS (shadow enabled) (32 KB)
E0000
|	ISA space available
C8000
|	Video BIOS (shadow enabled) (32 KB)
C0000

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

						Video	Horizontal	Vertical
	Mode	Pixel	Character	Columns	Colors	Clock	Freq	Freq
	(Hex)	Resolution	Size	/Rows	(K)	(MHz)	(kHz)	(Hz)
	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

					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:

nRS-232C serial port

nparallel (printer) port

ndiskette drive

nIDE 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:

nmemory address mapping, I/O address mapping

npower management for each PCMCIA card socket, controlled through power and RESETDRV control registers

nthe 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	Priority	Name	Device
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
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:
	— 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)
	Weight:
	— 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)
Keyboard	PS/2 compatible, 80-key standard (U.S.), 81-key
	standard (UK and Germany)
	Fn Key for ROM-based functions
Device Slots	One internal 2 1/2-inch x 0.75-inch high slot, right
	side access, for standard hard disk
	One 3 1/2-inch x 0.75-inch high slot, bottom-access,
	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:

—Versa S/50C, S/33C: TFT, backlit, color LCD

—Versa S 33DDSTN, backlit, color LCD

Resolution: 640 x 480 pixels

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.

LCD Latch

Figure Section 2-1 Opening the LCD Panel

2. Connect the AC adapter cable to the power port on the back of the system.

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.

Power

Port

AC

Adapter

AC

Power

Cable

Figure Section 2-2 Attaching the AC Adapter

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

Drive Port

Figure Section 2-3 Connecting the Diskette Drive

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	Battery
Pack
	Release Latch

Figure Section 2-5 Removing the Battery Pack

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.

Grooves

	Battery
Battery	Pack
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
	Caps	Scroll Lock
		Lock
	Power Lock
	Mgmt
	Charge
	Power
		A
	Hard Disk	Diskette
		Drive
	Drive
	Figure Section 2-9	LED Status Bar

2-6 Setup and Operation

n Power LED — lights yellow or green.

¾When steady green, the computer is running on AC power.

¾When steady yellow, the computer is running on battery power and battery power is sufficient.

¾When blinking yellow, the computer is running on battery power and battery power is low.

¾When off, the computer is in Suspend mode or the computer power is off.

nCharge LED — lights orange.

¾When lit continuously, the battery is charging.

¾When blinking orange, the battery has malfunctioned.

¾When off, no battery is installed, the AC adapter is not attached, or the battery is fully charged.

nPower Management LED — lights green

¾When lit continuously, Power Management features are enabled.

¾When blinking, the system is in Suspend mode.

¾When off, Power Management features are disabled.

nHard Disk LED — lights green when the hard disk is being accessed. Avoid turning off the Versa S when this LED is lit.

nDiskette Drive LED — lights green when a diskette is being accessed.

nCaps Lock LED — lights green when the Caps Lock is in effect.

nScroll Lock LED — lights green when the scroll lock key is active.

nNum Lock LED — lights green when Num Lock mode is in effect.