Deskpro 286

FEATURES AND SPECIFICATIONS

CONFIGURATION

SPARE PART NUMBERS


FEATURES AND SPECIFICATIONS

SYSTEM BOARD

HARD DRIVE

DISKETTE DRIVE

TAPE DRIVE

ROMS


CONFIGURATION

HARD DRIVE

FLOPPY DRIVE

SYSTEM BOARD

VIDEO

ASYNCHRONOUS COMMUNICATIONS/CLOCK BOARD

SERIAL/PARALLEL INTERFACE BOARD

CONTROLLER

MEMORY


SPARE PART NUMBERS  ** OBSOLETE **

DISKETTE DRIVE

HARD DRIVE

SYSTEM BOARD

CONTROLLERS

ROMS


DISKETTE DRIVE SPARES

Description	Spare Part Number
360KB Diskette Drive	102928-001 (black bezel)  120329-001 (gray bezel)
1.2MB Diskette Drive	102775-001 (black bezel)  120331-001 (gray bezel)
1.44MB Diskette Drive	113263-001 (black bezel)   113264-001 (gray bezel)
Drive Bezel	123456-001 (black bezel)


HARD DRIVE SPARES

Description	Drive Type	Spare Part Number	Unit
20MB Hard Drive	2	114463-001 (black bezel)	286/12
20MB Hard Drive	2	114464-001 (gray bezel)	286/12
20MB Hard Drive	2	102777-001	286/8
30MB Hard Drive	6	101664-001	286/8
40MB Hard Drive	17	108058-001 (black bezel)	Both
40MB Hard Drive	17	120332-001 (gray bezel)	Both
40MB Hard Drive	22	113030-001 (black bezel)	Both
40MB Hard Drive	22	113030-002 (gray bezel)	Both
40MB Hard Drive	43	113030-001 (black bezel)	286/12
40MB Hard Drive	43	113030-002 (gray bezel)	286/12
70MB Hard Drive	12	102932-001 (black bezel)	Both
70MB Hard Drive	12	120369-001 (gray bezel)	Both
130MB Hard Drive	25 or 35	108080-001 (black bezel)	Both
130MB Hard Drive	25 or 35	120333-001 (gray bezel)	Both


SYSTEM BOARD SPARES

Description	Assy #	Spare P/N	Unit
80286 System Board	000094	102774-001	286/8
80286 System Board	000361	106434-001	286/8
80286 System Board	000555/000700	106707-001	286/12


CONTROLLER SPARES

Description	Assy #	Spare P/N	Unit
Hard Drive Controller	WD1002WAH	102778-001	Both
Multipurpose Controller	000142	102705-001	286/8
Multipurpose Controller	000181-001/02	102705-001	286/8
Multipurpose Hard Drive	000336	104174-001	286/8
Multipurpose Hard Drive	000519/000815	104174-001	000815 (286/12 only)
ESDI Hard Drive 3:1	WD1005WAH	08140-001	Both
ESDI 130/300 1:1	WD1007AWAH	113265-001	Both
Tape Adapter	000774	113259-001	286/12
ESDI External 300/600	001091	115839-001	286/12
15MHz ESDI Controller	001283/001628	121667-001	286/12
ESDI Diskette Controller	001472	115374-001	286/12


ROMS SPARES

Description	Spare P/N	Unit
ROMS	105035-001	Both
ROM chip location:

System Board

Assy#	ODD	EVEN	Product
000130	U82	U88	286/8
000178/382	U84	U92	286/8
000361	U92	U49	286/8
000555/700	U92	U49	286/12


SYSTEM BOARD SPECS

Microprocessor

	16-bit 12 MHz 286 microprocessor
	Dual processing speeds
	The Deskpro 286-12 used a special CPU socket called LCC
	This socket consisted of a sandwiched arrangement with a metal latch. Some CPU accelarators can fit this slot but most will not work.
	Compaq does not offer a processor upgrade for the Deskpro 286.
Memory

        Standard RAM 640KB

        Maximum RAM  8.1MB

Expansion Slots

        Eight total slots

           þ  Six full sized 8/16 bit slots

           þ  One full sized 8 bit slot

           þ  One half sized 8 bit slot

Coprocessor Option -- 8-Mhz 80287

Standard Interfaces

        Parallel

        Asynchronous (serial) communications

Security Lock

        Security lock on front of the system unit

Software Utilities

        Disk cache software (standard)

Operating System

        - MS-DOS Version 3, Diskettes and Reference Guide (optional)

          Breaks the 32 megabyte barrier and enables partitioning of high

          capacity fixed disk drives into logical drives of up to

        - 512 megabytes each, when using MS-DOS Version 3.3 or higher

        - Supports 3 1/2 inch diskette drive on MS-DOS Version 3.3 or higher


HARD DRIVE CONFIGURATION

DRIVE	DRIVE in C	DRIVE in D
20-MB (P/N 102777-001)	1,5,6,7,8,9 ON	1 ON
	2,3,4,10 OFF	2 Through 10 OFF


SYSTEM BOARD CONFIGURATION

SW1 SETTING:

1	2	3	4	5	6	7	8	Function
OFF*								256K DRAM
ON								64K DRAM
	OFF*	OFF*						Enable all base memory
	ON	ON						Disable RAM and ROM
	ON	OFF						0-256KB base memory
	OFF	ON						0-512KB base memory
			OFF	OFF				64KB x 1 DRAM
			ON*	ON*				256K x 1 DRAM No extended memory
			ON	OFF				Enable bank 2 for 1.0-1.5-MB
			OFF	ON				Enable banks 2 & 3 for 1.0-2.0-MB
			OFF	OFF				Enable all banks for 1.0-2.5-MB
					OFF*			CPU boot speed 12-MHz
					ON			CPU boot speed 8-MHz
						OFF		Reserved
							ON*	EGA, RGBI, or VGC
							OFF	3rd-party monochrome (MDA only)


VIDEO CONFIGURATION

Video Display Controller (VDU) Board Jumper Settings (Assy No. 000031)

Video Display Controller (VDU) Board Jumper Settings (Assy No. 000160)

Video Display Controller (VDU) Board Jumper Settings (Assy No. 000345)

J3	J5	Function
2-3	2-3	Enable RGBI and composite video (high scan) (Desktop default)
1-2	1-2	Disable RGBI and composite video (high scan) (Portable default)

COMPAQ Enh Color Graphics Board (EGA/CECGB) Switch Settings (Assy No. 000410)

COMPAQ Enh Color Graphics Board (EGA/CECGB) Switch Settings (Assy No. 000471)

SW1 Settings (As the Only/Primary Video Display Controller Board)

1	2	3	4	Monitor Type	Power On Mode	Mode
OFF	ON	ON	OFF	COMPAQ Color	80 x 25 (640 x 350)	Color
				Compatible Enhanced Color
				COMPAQ Dual Mode
ON	ON	ON	OFF	COMPAQ Color	80 x 25 (640 x 200)	Color
				Compatible Enhanced Color
				COMPAQ Dual Mode
OFF	OFF	OFF	ON	RGBI Color	80 x 25 (640 x 200)	Color
				COMPAQ Dual Mode
ON	OFF	OFF	ON	RGBI Colo	40 x 25 (320 x 200)	Color
				COMPAQ Dual Mode
OFF	OFF	ON	OFF	COMPAQ Dual Mode	80 x 25 (720 x 350)	Monochrome

SW1 Settings (As the Secondary Video Display Controller Board)

1	2	3	4	Monitor Type	Power On Mode	Mode
OFF	OFF	ON	ON	COMPAQ Color	80 x 25 (640 x 350)	Color
				Compatible Enhanced Color
				COMPAQ Dual Mode
ON	OFF	ON	ON	COMPAQ Colo	80 x 25 (640 x 200)	Color
				Compatible Enhanced	Color
				COMPAQ Dual Mode
OFF	ON	ON	ON	RGBI Color	80 x 25 (640 x 200)	Color
				COMPAQ Dual Mode
ON	ON	ON	ON	RGBI Color	40 x 25 (320 x 200)	Color
				COMPAQ Dual Mode
OFF	ON	OFF	ON	COMPAQ Dual Mode	80 x 25 (720 x 350)	Monochrome

SW2 Settings

1	2	3	4	5	6	Monitor Type
OFF	OFF					COMPAQ Color
						Compatible Enhanced Color (external)
ON	OFF					RGBI Color (external)
OFF	ON					COMPAQ Dual Mode (external)
ON	ON					No external (Portables)
		OFF				COMPAQ Dual Mode internal (COMPAQ Portable,
						COMPAQ PLUS, COMPAQ PORTABLE 286, and
						COMPAQ PORTABLE II)
		ON				No internal (COMPAQ PORTABLE III *,
						COMPAQ PORTABLE 386 *, and Desktops)
			ON	OFF	ON	Reserved
* Set system board setting to monochrome mode.

SW3 Settings (Assy No. 000410 only):  If installed, all OFF (Reserved)

Jumper P1 (External Monitor)

Pins	Monitor Type
1 - 2	COMPAQ Color or Enhanced Color
2 - 3	RGBI Color or COMPAQ Dual Mode

Jumper JP3

Pins	Address Select
1 - 2	3xxh (default)
2 - 3	2xxh

Minimum System ROM Required for Enhanced Color Graphics Board (EGA/CECGB)

Product	Minimum ROM
COMPAQ Portable	G
COMPAQ PLUS	G
COMPAQ PORTABLE 286	F
COMPAQ PORTABLE II	F
COMPAQ PORTABLE III	K
COMPAQ PORTABLE 386	H
COMPAQ DESKPRO	H
8 MHz COMPAQ DESKPRO 286	F
12 MHz COMPAQ DESKPRO 286	K
COMPAQ DESKPRO 386	E
COMPAQ DESKPRO 386/20	H

Enhanced Color Graphics Board (EGA/CECGB)

Video ROM Revision (Spare PN 106686-001)

ROM	PN on ROM
B	108281-001
C	106633-001
D	106633-002
E	106633-003

Video Display Controller Board (VDU) Jumper Settings (Assy No. 000525)

J3/5	Function
2 - 3	Enable RGBI and composite video (high scan) (Desktop default)
1 - 2	Disable RGBI and composite video (high scan) (Portable default)

Plasma Display Controller Board Jumper Settings (Assy No. 000932)

Jumper	Function	Setting
E1	Reserved	Not installed
E2	Reserved	Installed

Video Graphics Controller Board (VGC/VGA) Jumper Settings (Assy No. 000806)

Video Graphics Controller Board (VGC/VGA) Jumper Settings (Assy No. 001241)

Video Graphics Controller Board (VGC/VGA) Jumper Settings (Assy No. 109360)

Jumper	Function	Setting
J1 or W1	Video RAM	1 - 2 16 bit (default)
		2 - 3 8 bit
J2 or W2	Video ROM	2 - 3 8 bit (default)
		1 - 2 16 bit

Minimum System ROM Required for Video Graphics Controller Board (VGA/VGC)

Product	Minimum ROM
COMPAQ PORTABLE III	K
COMPAQ PORTABLE 386	H
COMPAQ DESKPRO	H
8 MHz COMPAQ DESKPRO 286	F
12 MHz COMPAQ DESKPRO 286	K
COMPAQ DESKPRO 386	E
COMPAQ DESKPRO 386/20	H
COMPAQ DESKPRO 386/25	K.2

Video Graphics Controller Board (VGA/VGC) ROM Locations

Assy No. 000806       Assy Nos. 001241 and 109360

U14 EVEN	U11 EVEN

U23 ODD	U12 ODD

Video Graphics Controller Board (VGA/VGC)

ROM Revision (Spare PN 109315-001)

Revision	PN on ODD ROM	PN on EVEN ROM
A.0	109327-001	109328-001
A.1	109327-002	109328-002
A.2	109327-003	109328-003
B.0	109793-001	109794-001
B.1	109793-002	109794-002
D.0	109793-003	109794-003

Advanced Graphics 1024 Board (AG1024) Jumper Settings (Assy No. 109958)

Jumper W1 Setting	Function
1 - 2	Select address space 280h - 28Fh
2 - 3	Select address space 290h - 29Fh (default)

QVision 1024/E Controller Board (Assy No. 001924)

SW1 Settings

1	2	Function
ON		Power up as Secondary Adapter
OFF *		Power up as Primary Adapter
	ON	Test
	OFF	Normal
* Default

QVision 1024/I Controller Board (Assy No. 002163)

SW1 Setting

1	2	3	4	5	6	7	8	Function
OFF *								V3 (Virtual ID bit 3)
	OFF*							V2 (Virtual ID bit 2)
		OFF*						V1 (Virtual ID bit 1)
			OFF *					V0 (Virtual ID bit 0)
				OFF *				RAM Interface 16 bits
				ON				RAM Interface 8 bits
					OFF			ROM Interface 16 bits
					ON *			ROM Interface 8 bits
						OFF *		32 Kbyte ROM
						ON		24 Kbyte ROM
							OFF *	Test
							ON	Normal
* Default


ASYNCHRONOUS COMMUNICATIONS/CLOCK BOARD

COMPAQ DESKPRO Asynchronous Communications/Clock Board Jumper Position

Jumper	Pin 1 to Pin 2	Pin 2 to Pin 3
J702 *	COM2 address	COM1 address
J703	IRQ3	IRQ4
Jumper	Status
J704	Jumper - enables 8th slot
	No Jumper - disables 8th slot
J705 è	Jumper - enables clock
	No Jumper - disables clock
U13	Pins 5-12, 6-11, 7-10, 8-9	Pins 1-16, 2-15, 3-14, 4-13
	Serial RS-232-C operation	20 mA current loop operation
* Jumpers J702 and J703 must be checked together

è If no physical jumper, clock is enabled


SERIAL/PARALLEL INTERFACE BOARD

Serial/Parallel Interface Board (Assy No. 000570) Switch Setting

1	2	3	4	5	6	Function
OFF						Reserved
	ON					Enables serial port
	OFF					Disables serial port
		ON	ON			Parallel Port - LPT1 Selected
		OFF	ON			Parallel Port - LPT2 Selected
		ON	OFF			Parallel Port - LPT3 Selected
		OFF	OFF			Parallel Port - LPT Disabled
				ON	ON	Serial Port - COM1 Selected
				OFF	ON	Serial Port - COM2 Selected


HARD DRIVE SPECS

	130 MB	70 MB	40 MB	20 MB
Standard Configurations	Optional	Optional	Model 40	Model 20
LED Indicators	Green	Green	Green	Green
Formatted Capacity Per Drive
	134.5 MB	70.0 MB	42.6 MB	21.4 MB
Drives Supported	One	One	Two	One
Drive Height	Full	Full	Half	Half
Type	35	12	17	2
Drive Size	5 1/4 in.	5 1/4 in.	5 1/4 in.	3 1/2 in.
Transfer Rate (Mb/s)	10	5	5	8
Bytes Per Sector	512	512	512	512
Sector Per Track:
Physical	34	17	17	26
Logical	34	17	17	17
Number of Surfaces	8	9	5	2
Tracks Per Surface	966	925	980	805
Access Times (including settling)
Track to Track (ms)	5	8	8	8
Average (ms)	<20	<30	<30	<30
Maximum (ms)	50	70	70	70
Cylinders	966	925	980	805
Read/Write Heads	8	9	5	2
Logically Addressable
Cylinders	966	925	980	615
Logically Addressable
Heads	8	9	5	4


CONTROLLER CONFIGURATION

Diskette, Fixed Disk, and Tape drive control is imbedded on the system board.  The hard drive is an I.D.E. with RLL encoding.

The optional 6260 SCSI-2 Controller allows up to 7 SCSI devices to be connected including another SCSI-2 Controller for daisy-chaining.


ROMS SPECS

DESKPRO 286/8 -

System ROM Locations

System Memory Board	System Memory Board	System Board
(Assy No. 000130)	(Assy Nos. 000178 and 000382)	(Assy No. 000361)
U82 ODD	U84 ODD	U92 ODD
U88 EVEN	U92 EVEN	U49 EVEN

System Option ROM Locations

System Memory Board	System Memory Board	System Board
(Assy No. 000130)	(Assy Nos. 000178 and 000382)	(Assy No. 000361)
U78 ODD	U79 ODD	U116 ODD
U85 EVEN	U89 EVEN	U75 EVEN

DESKPRO 286/12 ROMs

System ROM Locations	System Option ROM Location
U92 ODD	U116 ODD
U49 EVEN	U75 EVEN


TAPE DRIVE SPECS

135-MB Tape System (Option)

        Duplicates and verifies 135 million characters of data from a

        fixed disk drive onto a removable tape cartridge at a 5

        megabyte/minute transfer and verify rate

40-MB Tape Systems (Option)

        Duplicates and verifies 40 million characters of data from a

        fixed disk drive onto a removable tape cartridge at a 1

        megabyte/minute transfer and verify rate

Tape Operating System

        SY-TOS Tape Operating System diskette and User's Guide [included

        with 135 Megabyte Tape Drive]

	135 MB	40 MB
LED Indicators	Green	Green
Drive Height	Half	Half
Approximate Operating Times:
Backup and Verify	5 MB/min	1 MB/min
Restore	5 MB/min	2 MB/min
Format Blank Cartridge	Not Required	74 minutes
Formatted Capacities:
Per Tape	135.0 MB	40.0 MB
Per Track	7.5 MB	2.0 MB
Per Data Block (bytes)	512	16,384
Per Sector (bytes)	NA	1024
Mechanical Measurements:
Tape Width	0.25 in.	0.25 in.
Tape Length	600 ft	205 ft
Tape Speed:
Read/Write (both directions)	72 ips	50 ips
Rewind/Fast Forward	90 ips	70 ips
Tape Format (physical):
Read/Write	Streaming	Streaming
Track Pattern	Serpentine	Serpentine
Number of Tracks	18	20
Number of Blocks Per Track	16,900	124
Number of Data Sectors Per Block	NA	16
Percentage of ECC	6.67	11.11
Recording Density/Inch	10,000 bits	10,000 bits
Flux Reversals/Inch	12,500	10,000
Track Density/Inch	76	83
Data Encoding Method	4,5 GCR	MFM
Data Transfer Rate (Kb/s)	720	500
Error Detection/Correction	CRC/ECC	CRC/ECC
Tape Cartridge:
Read/Write	3M DC 600XTD (QIC-150)	3M DC 2000
Read	QIC-24, QIC-120	3M DC 1000


MEMORY CONFIGURATION

E1 Jumper Positions on COMPAQ DESKPRO 286 System Memory

Board (Assy #000130)*

Bank 1-4 Filled with:	Jumper Position:	Address Range Enabled:
64K x 1 chips	E1 to E2	0 to 640 Kbytes (Base memory)
	E5 to E6
64K x 1 chips	E2 to E3	0 to 512 Kbytes (Base memory) è
	E4 to E5
256K x 1 chips	E2 to E3	0 to 640 Kbytes (Base memory) ð
	E5 to E6	1 to 2.5 Megabytes (Extended memory)
256K x 1 chips	E2 to E3	0 to 640 Kbyte (Base memory)
	E4 to E5
* Not PAL dependent

è For software packages requiring a maximum memory of 512 Kbytes

= 640 Kbytes to 1 Megabyte Reserved

E1 Jumper Positions on 8 MHz COMPAQ DESKPRO 286 System Memory

Board (Assy Nos. 000382 * and 000178 è)

PAL in U90

Bank 1-4 Filled with:	E1 Jumper Position:	Address Range Enabled:
64K x 1 chips	1 to 2	0 to 640 Kbytes (Base memory)
	5 to 6
64K x 1 chips	1 to 2	0 to 512 Kbytes (Base memory)
	4 to 5
64K x 1 chips *	2 to 3	0 to 256 Kbytes (Base memory)
	4 to 5
256K x 1 chips	2 to 3	0 to 640 Kbytes (Base memory) ð
	5 to 6	1.25 Megabytes (Extended memory)
256 x 1 chips *	2 to 3	0 to 640 Kbytes
	4 to 5
                                                                                                ----------------------------------------------

* Only valid with 105615 PAL

è Only valid with 102665 PAL

ð 640 Kbytes to 1 Megabyte Reserved


DISKETTE DRIVE SPECS

	1.2 MB	360 KB	1.44 MB
Diskette Size	5 1/4	5 1/4	3 1/2.
LED Indicators:
Read/Write (HD)	G	NA	G
Read/Write (DD)
(U.S/Interntnl)	R/O	R/O	O
Capacity Per Diskette
(high/low)	1.2M/	360 K	1.44 M/
		360 K	720 KB
Drives Supported	Two	One	One (B)
Drive Height	Half	Half	Half
Drive Rotation (rpm)	360	300	300
Transfer Rate (high/low)
(Kb/s)	500/300	250	500/250
Bytes Per Sector	512	512	512
Sectors Per Track
(high/low)	15/9	9	18/9
Tracks Per Side
(high/low)	80/40	40	80/80
Access Times:
Track to Track (ms)	3	6	3
Average (ms)	79	80	79
Settling Time (ms)	15	15	15
Latency Average (ms)	84	100	100
Cylinders (high/low)	80/40	40	80/80
Read/Write Heads	Two	Two	Two


FLOPPY DRIVE CONFIGURATION

The floppy diskette drive is configured with the SETUP routine on the

Diagnostics diskette.