...because we can't all be on the bleeding edge...





Portable (PLUS) (Model 00004-Rev. C or earlier)

COMPAQ COMPUTER CORPORATION

Portable (PLUS) (Model 00004-Rev. C or earlier)

Processor

8088

Processor Speed

4.77MHz

Chip Set

None

Max. Onboard DRAM

640KB

Cache

None

BIOS

Compaq

Dimensions

372mm x 180mm

I/O Options

None

NPU Options

8087

CONNECTIONS

Purpose

Location

Purpose

Location

Main power

P0

Speaker

SPK

USER CONFIGURABLE SETTINGS

Function

Switch

Position

Factory configured - do not alter

SW1/1

Off

NPU disabled

SW1/2

On

 

NPU enabled

SW1/2

Off

Factory configured - do not alter

SW1/3

Off

Factory configured - do not alter

SW1/4

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

128KB

(9) 4164

(9) 4164

NONE

NONE

192KB

(9) 4164

(9) 4164

(9) 4164

NONE

256KB

(9) 4164

(9) 4164

(9) 4164

(9) 4164

384KB

(9) 4164

(9) 4164

(9) 41256

NONE

448KB

(9) 4164

(9) 4164

(9) 4164

(9) 41256

512KB

(9) 41256

(9) 41256

NONE

NONE

544KB

(9) 4164

(9) 4164

(9) 41256

(9) 41256

640KB

(9) 4164

(9) 4164

(9) 41256

(9) 41256

Note:640KB requires ROM version C or later in which case SW2 switch settings are ignored.

DRAM SWITCH CONFIGURATION

Size

SW2/1

SW2/2

SW2/3

SW2/4

SW2/5

SW2/6

SW2/7

SW2/8

128KB

On

Off

On

On

Off

Off

Off

Off

192KB

On

On

Off

On

Off

Off

Off

Off

256KB

On

Off

Off

On

Off

Off

Off

Off

320KB

On

On

On

Off

Off

Off

Off

Off

384KB

On

Off

On

Off

Off

Off

Off

Off

448KB

On

On

Off

Off

Off

Off

Off

Off

512KB

On

Off

Off

Off

Off

Off

Off

Off

544KB

Off

Off

Off

Off

Off

Off

Off

Off

FLOPPY DRIVE CONFIGURATION

Drives installed

SW1/7

SW1/8

1

On

On

2

Off

On

3

On

Off

4

Off

Off

MONITOR CONFIGURATION

Type

SW1/5

SW1/6

80 x 25 color (Compaq VDU)

On

Off

40 x 25 color (Compaq VDU)

Off

On

80 x 25 color (EGA or RGBI)

On

On

Monochrome

Off

Off