Deskpro    (Discontinued unit)

FEATURES AND SPECIFICATIONS

CONFIGURATION

SPARE PART NUMBERS


HARD DRIVE  SPECS

10mb Half Height Drive    HH612-2 (or) ST212

Height 1 3/4"( 4.44cm)

Width  5 7/8"(14.92cm)

Depth  8 1/4"(20.96cm)

20mb Half Height Drive    HH725A

Height 1 3/4"( 4.44cm)

Width  5 7/8"(14.92cm)

Depth  8 1/4"(20.96cm)

30mb Full Height Drive    BJ705-A

Height 3 3/8"( 8.57cm)

Width  5 7/8"(14.92cm)

Depth  8 1/4"(20.96cm)

Fixed Disk Drives

20 Megabyte

LED Indicator                             Green

Formatted Capacity Per Drive      20 Mbytes

Drives Supported                        One

Drive Height                               Half

Type                                         NA

Drive Size                                  5 1/4 in.

Transfer Rate (Mb/s)                   5

Bytes Per Sector                        512

Sectors Per Track:

  Physical                                   17

  Logical                                     17

Number of Surfaces                     4

Tracks Per Surface                      612

Access Times (including settling):

  Track to Track (ms)                     38

  Average (ms)                             105

  Maximum (ms)                          205

Cylinders                                     612

Read/Write Heads                           4

Logically Addressable Cylinders     612

Logically Addressable Heads            4


TAPE DRIVE SPECS

10mb Tape Drive           110

Height 1 3/4"( 4.04cm)

Width  6 "   (15.03cm)

Depth  8 1/4"(21.00cm)

10mb Tape Cartridge       DC1000

TAPE

DESKPRO   GENTAPE.TX

FIXED DISK DRIVE BACKUP             10MB TAPE

-----------------------------------------------

LED Indicator                       Red

Drive Height                        Half

Approximate Operating Times

per 10mb(min) Backup & Verify

  Formatted Cartridge               16

  Unformatted Cartridge             50

Restore                             8

Format Blank Cartridge              34

Maximum Formatted Capacities

  Per Tape                          10mb

  Per Track                         1.29mb

  Per Block                         8192 Bytes

  Per Sector                        1024 Bytes

Mechanical Measurements

  Tape Width                        .15in

  Tape Length                       185ft

Tape Speed

  Read/Write (Both Directions)      39 IPS

  Rewind/Fast Forward               70 IPS

Tape Format

  Read/Write                        Streaming

  Track Pattern                     Serpentine

  Number of Tracks                  8

  Number of Blocks per Track        158

  Number of Data Sectors per Block  8

  Recording Density/Inch            6400 bits

  Flux Reversals/Inch               6400

  Track Density/Inch                59

  Data Encoding Method              MFM

  Data Transfer Rate (BPS)          250K

  Error Detection                   CRC

Tape Cartridge                      3M DC1000


MEMORY SPECS

64x1 (150ns) DRAM

Length 3/4"(1.9cm)

Width  1/4"(0.7cm)

64x4 (150ns) DRAM

Length 7/8"(2.3cm)

Width  1/4"(0.7cm)

256x1(150ns) DRAM

The COMPAQ DESKPRO Personal Computer is configured with 256-Kbytes for

Randon Access Memory(RAM).  The system can be expanded to 640 Kbytes

of RAM on the system board by using a 512-Kbyte Memory Upgrade Kit. To

add the 512-Kbyte Memory Upgrad Kit, the 128 Kbytes of socketed RAM

must first be removed.  The 512-Kbyte Memory Upgrade Kit added to the

128 Kbytes of soldered RAM gives the system 640 Kbytes of RAM.

                              SYSTEM BOARD

                       Standard Memory: 256 Kbytes

                                ------

                                REMOVE

                                ------

                       128 Kbytes of socketed RAM

                        Total Memory: 128 Kbytes

                                ------

                                REMOVE

                                ------

                        512 Kbyte Memory Upgrade Kit

                         Total Memory: 640 Kbytes


CONTROLLER CONFIGURATION

NOMENCLATURE -SWITCHES/JUMPER SETTING

FDD Controller WD1002SWX2            SW1 for Drive D:    SW1 for Drive C:

                                     10mb  1=OFF 2=OFF   10mb  3=OFF 4=OFF

                                     20mb  1=ON  2=OFF   20mb  3=ON  4=OFF

                                     30mb  1=ON  1=ON    30mb  3=ON  3=ON

FDD Controller WD1002WX2* **         10mb  1=ON  2=ON    10mb  3=ON  4=ON

               WD1002HX4             20mb  1=OFF 2=ON    20mb  3=OFF 4=ON

                                     30mb  1=OFF 2=OFF   30mb  3=OFF 4=OFF

*  Do not remove jumpers E17-E18.

** Earlier versions of this board have no switch settings and are fixed

   for the 10mb.


ROMS CONFIGURATION

ROMS are positioned in location U21.  No configuration is required as

the ROMs are recognized on bootup.


TAPE DRIVE CONFIGURATION

NOMENCLATURE	MIN.ROM	SWITCHES/JUMPER SETTINGS
10MB Tape Drive	E	There are no jumpers to configure


SYSTEM BOARD CONFIGURATION

8086 System  (ALL ASSEMBLIES)

NOMENCLATURE	SWITCHES/JUMPER SETTINGS

1 = OFF	Reserved (always off)
2 = ON*	No coprocessor
2 = OFF	Coprocessor installed
3,4=ON *	640kb memory
3=ON,4=OFF	128kb memory
3,4=OFF	256kb memory
3=OFF,4=ON	512kb memory
5=ON,6=OFF*	80x25 COMPAQ VDU primary (MDA secondary)
5=ON,6=ON	80x25 COMPAQ EGA primary (MDA secondary)
5=OFF,6=ON	40x25 COMPAQ VDU**primary(MDA secondary)
5=OFF,6=OFF	3rd party mono primary (RGBI secondary))

*Default

**With a revision F or later system ROM


COPROCESSOR CONFIGURATION

Coprocessor

2=ON*	No coprocessor
3=OFF	Coprocessor installed

*Default


DISKETTE/PRINTER CONFIGURATION

SW1-1	OFF	Reserved
SW1-2	ON*	Enable parallel interface
SW1-2	OFF	Disable parallel interface
SW1-3	OFF	Reserved
SW1-4	OFF	Reserved

*Default


VIDEO CONFIGURATION

Enh. Color Graphics         SW1 SETTINGS (As the only/primary video)

(000410 & 000471)           1   2   3   4    Monitor Type      Power-On        Mode

CECGB VIDEO ROM REV.        OFF ON  ON  OFF  COMPAQ COLOR      80x25(640x350)  Color

Spare Part# 106686-001                       Comp. Enh Color

ROM   PN on ROM                              COMPAQ Dual-Mode

B     108281-001

C     106633-001            ON  ON  ON  OFF       "            80x25(640x200)  Color

D     106633-002

E     106633-003            OFF OFF OFF ON   RGBI Color        80x25(640x200)  Color

                                             COMPAQ Dual-Mode

                            ON  OFF OFF ON   RGBI Color

                                             COMPAQ Dual-Mode  40x25(320x200)  Color

                            OFF OFF ON  OFF  COMPAQ Dual-Mode  80x25(720x350)  Mono

                            SW1 SETTINGS (As the secondary video)

                            1   2   3   4     Monitor Type     Power-On        Mode

                            OFF OFF ON  ON       same            same          same

                            ON  OFF ON  ON       same            same          same

                            OFF ON  ON  ON       same            same          same

                            ON  ON  ON  ON       same            same          same

                            OFF ON  OFF ON       same            same          same

                            SW2 SETTINGS

                            1=OFF 2=OFF          COMPAQ Color, Enh. Color (external)

                            1=ON  2=OFF          RGBI Color (external)

                            1=OFF 2=ON           COMPAQ Dual-Mode (external)

                            1=ON  2=ON           No external (Portables)

                            3=OFF                COMPAQ Dual-Mode internal

                                                 (Portable, Plus, P286 & PII))

                            3=ON                 No internal (PIII*, P386*, Desktops)

                            4=ON,5=OFF,6=ON      Reserved

                            *Set system board setting to monochrome mode

                            SW3 SETTINGS(000410 ONLY)

                            If installed, all OFF (Reserved)

                            JUMPER P1 (External Monitor)

                            1-2    COMPAQ Color or Enhanced Color

                            2-3    RGBI Color or COMPAQ Dual-Mode

                            JUMPER JP3

                            1-2    3xxh (default)

                            2-3    2xxh

VDU Controller Board        J3      J5       Function

(000031,000160,000345,      2-3     2-3      Enable RGBI & Composite video (high scan)

000525)                                      (Desktops default)

                            1-2     1-2      Disable RGBI & Composite video (high scan)

                                             (Portables default)

VGC Controller Board        JUMPER     FUNCTION     SETTING

(000806,001241,109360)      J1 or W1*  Video RAM    1-2  16bit

                                                    2-3   8bit

                            J2 or W2*  Video ROM    2-3   8bit

                                                    1-2  16bit

                            *Default

VGC ROM LOCATIONS

000806     001241 &109360

U14 Even   U11 Even

U23 Odd    U12 Odd

VGC ROM REVISION (Spare PN 109315-001)

REV        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


ASYNC/COMM BOARD CONFIGURATION

ASYNC/COMM CLOCK BOARD      JUMPER    Pin 1-2          Pin 2-3

(000061)                    J702*     COM2 (addr.2FX)  COM1 (addr.3FX)

                            J703*     IRQ3             IRQ4

                            J704      Jumper enables 8th slot

                                      No jumper disables 8th slot

                            J705**    Jumper enables clock

                                      No jumper disables clock

                            SHUNT     STATUS

                                      Pins 5-12, 6-11, 7-10, 8-9 connected

                                      Serial RS232C operation

                            U13        ------------------------------------

                                      Pins 1-16, 2-15, 3-14, 4-13 connected

                                      20-mA current loop operation


SERIAL/PARALLEL BOARD CONFIGURATION

Serial/Parallel Board       JUMPER          FUNCTION

(000570)                    1=OFF*          Reserved

                            2=ON*           Enable serial interface

                            2=OFF           Disable serial interface

                            3=OFF 4=ON*     Parallel printer interface LPT2

                            3=ON  4=ON      Parallel printer interface LPT1

                            3=ON  3=OFF     Parallel printer interface LPT3

                            3=OFF 4=OFF     Disable parallel printer interface

                            5=OFF*6=ON*     Serial interface COM2

                            5=ON  6=ON      Serial interface COM1

                            *Default

Serial/Parallel Board       JUMPER          FUNCTION

(000990)                    1=OFF*          Reserved

                            2=OFF           Reserved

                            3=OFF*4=ON*     Parallel printer interface LPT2

                            3=ON  4=ON      Parallel printer interface LPT1

                            3=ON  4=OFF     Parallel printer interface LPT3

                            3=OFF 4=OFF     Disable parallel printer interface

                            5=OFF*6=ON*     Serial interface COM2

                            5=ON  6=ON      Serial interface COM1

                            5=OFF 6=OFF     Disable serial interface

                            *Default


VIDEO SPECS

COMPAQ DUAL-MODE MONITOR      U.S.          INTERNATIONAL

-----------------------------------------------------------

Dimensions

  Width                       14.7in        37.5cm

  Height                      10.2in        26.0cm

  Depth                       13.7in        34.8cm

Weight                        150.lbs       7.9 kg

============================================================

COMPAQ COLOR MONITOR

------------------------------------------------------------

Dimensions

  Width                       13.9in        35.4cm

  Height                      11.8in        30.0cm

  Depth                       14.9in        38.0cm

Weight                        28.0lbs       12.9kg

*ECG and VGC require system ROM H or later.


FLOPPY DRIVE SPECS

DISKETTE DRIVES                   360-KBYTE

---------------------------------------------

LED Indicator                     Red

Capacity Per Drive                360 Kbytes

Drives Supported                  Two

Drive Height                      Half

Drive Size                        5 1/4"

Drive Rotation (RPM)              300

Transfer Rate (BPS)               250K

Bytes per Sector                  512

Sectors per Track                 9

Tracks per Side                   40

Access Times

  Track-to-Track (ms)             6

  Average (ms)                    80

  Settling Time (ms)              15

  Latency Average (ms)            100

Cylinders                         40

Read/Write Heads                  2

No 1.44mb or 1.2mb diskette drive available. Unit is 8bit system

and these drives require a 16bit controller.


FEATURES AND SPECIFICATIONS

HARD DRIVE

TAPE DRIVE

MEMORY

VIDEO

FLOPPY DRIVE


CONFIGURATION

CONTROLLER

TAPE DRIVE

ROMS

SYSTEM BOARD

COPROCESSOR

VIDEO

ASYNC/COMM

SERIAL/PARALLEL BOARD


SPARE PART NUMBERS ** OBSOLETE **

HARD DRIVE

TAPE DRIVE

MEMORY

CONTROLLER

FLOPPY DRIVE

VIDEO


HARD DRIVES - SPARES

NOMENCLATURE	ASSY#/MODEL#	PART#
10mb Half Height Drive	HH612-2 (or) ST212	101437-001
20mb Half Height Drive	HH725A	102777-001
30mb Full Height Drive	BJ705-A	101664-001


TAPE DRIVE - SPARES

NOMENCLATURE	ASSY#/MODEL#	PART#
10mb Tape Drive	110	101438-001
10mb Tape Cartridge	DC1000	101488-001


MEMORY - SPARES

NOMENCLATURE	PART #
64x1 (150ns) DRAM	105152-001
64x4 (150ns) DRAM	106330-001
256x1(150ns) DRAM	105151-001


VIDEO - SPARES

NOMENCLATURE	ASSY#/MODEL#	PART #
Enh. Color Graphics*	000410	106373-001
Enh. Color Graphics*	000471	109196-001
VDU	000031 000160 000345 000525	101340-001
VGC*	000806 001241 109360	109253-001

*ECG and VGC require system ROM H or later.


FLOPPY DRIVE - SPARES

NOMENCLATURE	ASSY#/MODEL#	PART #
360kb Half Height Drive	MF501B-352U	102928-001 (black bezel)
		120329-001 (gray bezel )

*No 1.44mb or 1.2mb diskette drive available. Unit is 8bit system

and these drives require a 16bit controller.


CONTROLLER - SPARES

NOMENCLATURE	ASSY#/MODEL#	PART #
Hard Drive Controller	WD1002SWX2  WD1002WX2  WD1002HX4	101672-001
Diskette/Printer	000043   000181-011	101341-001