GENESIS SABRE 3000 SERIES Motherboard Settings and Configuration

Processor

80386DX

Processor Speed

25/33/40MHz

Chip Set

Unidentified

Max. Onboard DRAM

64MB (with external memory card installed)

Cache

64/256KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

32-bit external memory card

NPU Options

80387DX/3167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J1

Reset switch

J4

Speaker

J2

32-bit external memory card

SL1

Turbo switch

J3

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

»

Boot up speed selection - keyboard switching enabled

W3

pins 1 & 2 closed

Boot up speed selection - low speed only enabled

W3

pins 2 & 3 closed

Boot up speed selection - high speed only enabled

W3

Open

»

Burst mode support enabled

W4 & W5

pins 2 & 3 closed

Burst mode support disabled

W4 & W5

pins 1 & 2 closed

»

DMA channel select 8MHz

W8

pins 2 & 3 closed

DMA channel select 16MHz

W8

pins 1 & 2 closed

»

BIOS type select 512KB

W9

pins 1 & 2 closed

BIOS type select 256KB

W9

pins 2 & 3 closed

»

Monitor type select color

W12

pins 2 & 3 closed

Monitor type select monochrome

W12

pins 1 & 2 closed

»

Factory configured - do not alter

SW1/1

On

»

Factory configured - do not alter

SW1/2

Off

»

Factory configured - do not alter

SW2/1

On

»

Factory configured - do not alter

SW2/2

On

»

VGA shadowing enabled

SW2/3

On

VGA shadowing disabled

SW2/3

Off

»

Factory configured - do not alter

SW2/4

Off

»

BIOS shadowing enabled

SW2/5

On

BIOS shadowing disabled

SW2/5

Off

»

Factory configured - do not alter

SW2/6

Off

»

Factory configured - do not alter

SW2/7

Off

»

Factory configured - do not alter

SW2/8

Off

Note: The location of W4 & W5 are unidentified.

CACHE CONFIGURATION

Size

Bank 0

TAG

64KB

(10) 16K x 4

(1) 16K x 4

256KB

(9) 64K x 4

(1) 64K x 4

Note: The location of the empty DIP is unidentified.

CACHE SWITCH CONFIGURATION

Size

SW1/3

SW1/4

64KB

Off

Off

256KB

On

On

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) 1M x 9

NONE

NONE

NONE

6MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

NONE

8MB

(4) 4M x 9

(4) 4M x 9

NONE

NONE

10MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

NONE

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

24MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

NONE

32MB

(4) 4M x 9

(4) 4M x 9

NONE

NONE

40MB

(4) 4M x 9

(4) 4M x 9

(4) 1M x 9

(4) 1M x 9

48MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

NONE

64MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

Note:Bank 2 and Bank 3 are located on the external memory card.

DRAM JUMPER CONFIGURATION

SIMM type

W10

W11

256K x 9

pins 2 & 3 closed

pins 2 & 3 closed

1M x 9

pins 1 & 2 closed

pins 2 & 3 closed

4M x 9

pins 1 & 2 closed

pins 1 & 2 closed

DRAM TYPE CONFIGURATION

SIMM Type

W1

W2

256K x 9

pins 2 & 3 closed

pins 2 & 3 closed

1M x 9

pins 1 & 2 closed

pins 2 & 3 closed

4M x 9

pins 1 & 2 closed

pins 1 & 2 closed

DRAM SWITCH CONFIGURATION

Size

Main board

32-bit board

SW1/5

SW1/6

SW1/7

SW1/8

1MB

(4) 256K x 9

NONE

On

On

On

On

2MB

(8) 256K x 9

NONE

On

Off

On

On

4MB

(4) 1M x 9

NONE

On

On

On

Off

6MB

(8) 256K x 9

(4) 1M x 9

Off

On

On

On

8MB

(8) 1M x 9

NONE

On

Off

On

Off

10MB

(8) 256K x 9

(8) 1M x 9

Off

Off

On

On

12MB

(8) 1M x 9

(4) 1M x 9

Off

On

On

Off

16MB

(8) 1M x 9

(8) 1M x 9

Off

Off

On

Off

16MB

(4) 4M x 9

NONE

On

On

Off

Off

24MB

(8) 1M x 9

(4) 4M x 9

Off

On

Off

On

32MB

(8) 4M x 9

NONE

On

Off

Off

Off

40MB

(8) 1M x 9

(8) 4M x 9

Off

Off

Off

On

48MB

(8) 4M x 9

(4) 4M x 9

Off

On

Off

Off

64MB

(8) 4M x 9

(8) 4M x 9

Off

Off

Off

Off