HP Vectra QS/20

Qs20-1.jpg
Qs20-2.jpg
Qs20-3.jpg

The HP Vectra QS/20 is a PC compatible desktop based on the 80386 processor.

Jumper Settings

Processor

80386DX

Processor Speed

20MHz

Chip Set

HP

Max. Onboard DRAM

8MB (16MB with optional memory module)

Cache

None

BIOS

HP

Dimensions

334mm x 128mm

I/O Options

16-bit proprietary backplane ports (2), 8MB memory module (Part # HP D1440A)

NPU Options

80387

 

CONNECTIONS

Purpose

Location

16-bit proprietary backplane ports

CN1

USER CONFIGURABLE SETTINGS

Function

Switch

Position

»

NPU enabled

SW1/1

Off

 

NPU disabled

SW1/1

On

»

Bus speed select asynchronous (8MHz)

SW1/2

On

 

Bus speed select synchronous with CPU QS/16=8MHz, QS/20=10MHz

SW1/2

Off

»

Base memory size select 640KB

SW1/3

On

 

Base memory size select 512KB

SW1/3

Off

»

Optional ROM enabled

SW1/4

On

 

Optional ROM disabled

SW1/4

Off

»

Factory configured - do not alter

SW1/5

On

»

NPU mode select synchronous with CPU

SW1/6

On

 

NPU mode select asynchronous with CPU

SW1/6

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(4) 256K x 9

NONE

NONE

NONE

2MB

(4) 256K x 9

(4) 256K x 9

NONE

NONE

4MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

NONE

NONE

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

10MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

Note:Banks 2 & 3 are utilized when an optional memory module is installed. (Part # HP D1440A)

See Also