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VXFT 386 MKI (TITAN MOTHERBOARD)

APRICOT COMPUTERS LIMITED

VXFT 386 MKI (TITAN MOTHERBOARD)

Processor

80386DX

Processor Speed

25MHz

Chip Set

Unidentified

Max. Onboard DRAM

16MB

Cache

None

BIOS

Unidentified

Dimensions

254mm x 220mm

I/O Options

Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial port, VGA port, synchronous port

NPU Options

3167

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port

CN1

Floppy drive interface

CN6

Parallel port

CN2

IDE interface

CN7

VGA port

CN3

External battery

JP2

Synchronous port

CN4

Speaker

JP3

PS/2 mouse port

CN5

 

 

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

386 pipeline mode enabled

SW1/1

On

 

386 pipeline mode disabled

SW1/1

Off

385 pipeline mode enabled

SW1/2

On

 

385 pipeline mode disabled

SW1/2

Off

ROM disabled

SW1/3

On

 

ROM enabled

SW1/3

Off

Refresh enabled

SW1/4

On

 

Refresh disabled

SW1/4

Off

Factory configured - do not alter

SW2/6

On

NPU disabled

SW2/7

Off

 

NPU enabled

SW2/7

On

Factory configured - do not alter

SW2/8

On

Factory configured - do not alter

SW3

Open

Ethernet cable select BNC

SW53/1-6

On

 

Ethernet cable select D - shell

SW53/1-6

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

12MB

(4) 2M x 9

(4) 1M x 9

16MB

(4) 2M x 9

(4) 2M x 9

DRAM SWITCH CONFIGURATION

Size

SW2/1

SW2/2

SW2/3

1MB

Off

Off

Off

1MB

On

Off

Off

2MB

Off

On

Off

4MB

Off

Off

On

5MB

On

On

Off

8MB

On

Off

On

12MB

Off

On

On

16MB

On

On

On

CPU SPEED CONFIGURATION

Speed

SW2/4

SW2/5

25MHz

Off

On

MICSELLANEOUS TECHINCAL NOTE

Note: The purpose of JP1 is unidentified by the manufacturer.