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





PORTABLE III

COMPAQ COMPUTER CORPORATION

PORTABLE III

Processor

80286 (exact location unidentified)

Processor Speed

8/12MHz

Chip Set

Unidentified

Max. Onboard DRAM

6MB (4MB on external memory card)

Cache

None

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

IDE interface, external memory card slot, floppy drive interface, parallel port, serial port, VGA port, display connector

NPU Options

80287 (exact location unidentified)

CONNECTIONS

Purpose

Location

Purpose

Location

Parallel port

CN1

External Memory card slot

CN5

VGA port

CN2

IDE interface

CN6

Serial port

CN3

Floppy drive interface

CN7

Display controller

CN4

   

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Hard drive enabled

CN8/5

On

 

Hard drive disabled

CN8/5

Off

CPU speed select 8MHz

CN8/6

On

 

CPU speed select 12MHz

CN8/6

Off

Video type select boots plasma display in color mode

CN8/7

On

 

Video type select boots plasma display in monochrome mode

CN8/7

Off

Factory configured - do not alter

CN8/8

Off

CPU access speed select 8/12

E1

pins 1 & 2 closed

 

CPU access speed select 8

E1

pins 2 & 3 closed

Factory configured - do not alter

E2

N/A

Printer port enabled

E7

pins 2 & 3 closed

 

Printer port disabled

E7

pins 1 & 2 closed

Controller address select primary

E8

pins 1 & 2, 4 & 5 closed

 

Controller address select secondary

E8

pins 2 & 3, 4 & 5 closed

System ROM select 16KB

E10

pins 1 & 2 closed

 

System ROM select 32KB

E10

pins 2 & 3 closed

ROM Set2 enabled

E12

pins 1 & 2 closed

 

ROM Set2 disabled

E12

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

256KB

(1) 256K x 9

NONE

512KB

(1) 256K x 9

(1) 256K x 9

1MB

(1) 1M x 9

NONE

1.5MB

(1) 1M x 9

(1) 256K x 9

2MB

(1) 1M x 9

(1) 1M x 9

COM/IRQ CONFIGURATION

COM/IRQ

E5/E16

COM1/IRQ4 Serial

pins 2 & 4 closed

COM1/IRQ4 Modem

pins 3 & 4 closed

COM2/IRQ3 Serial

pins 1 & 2 closed

COM2/IRQ3 Modem

pins 1 & 3 closed

SERIAL PORT CONFIGURATION

COM port

E3/E4

COM1 Serial

pins 1 & 2 closed

COM1 Modem

pins 1 & 3 closed

COM2 Serial

pins 1 & 3 closed

COM2 Modem

pins 3 & 4 closed

DRAM BASE MEMORY SWITCH CONFIGURATION

Size

CN8/1

CN8/2

None

On

On

256KB

On

Off

512KB

Off

On

640KB

Off

Off

DRAM EXTENDED MEMORY SWITCH CONFIGURATION

Base memory

Extended memory

CN8 Switch 3

CN8 Switch 4

640KB

256KB

On

Off

640KB

1MB

Off

On

DRAM BANK CONFIGURATION

Bank

E17

None

pins 2 & 3, 4 & 5 closed

Bank 1

pins 2 & 3, 5 & 6 closed

Bank 1 & 2

pins 1 & 2, 4 & 5 closed

Bank 1, 2, & 3

pins 1 & 2, 5 & 6 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

512KB

(2) 256K x 9

NONE

NONE

1MB

(2) 256K x 9

(2) 256K x 9

NONE

1.5MB

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

NONE

4MB

(2) 1M x 9

(2) 1M x 9

NONE

6MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

DRAM CONFIGURATION

Size

S1

256K x 9

pins 1 & 2 closed

1M x 9

pins 2 & 3 closed