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B678/B679

FORCOM TECHNOLOGY CORPORATION

B678/B679

Processor

80386DX

Processor Speed

33/40MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 214mm

I/O Options

None

NPU Options

80387/3167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J10

Speaker

J24

Turbo LED

J22

Reset switch

SW1

Power LED & Keylock

J23

Turbo switch

SW2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select monochrome

JP1

Open

 

Monitor type select color

JP1

Closed

CMOS memory normal operation

JP2

pins 2 & 3 closed

 

CMOS memory clear

JP2

pins 1 & 2 closed

Bus speed select ATCLK/6

JP3

Open

 

Bus speed select ATCLK/8

JP3

Closed

Factory configured - do not alter

JP10

pins 1 & 2 closed

Note:The location of JP3 is unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

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

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(3) 16K x 4

128KB

(4) 32K x 8

NONE

(3) 16K x 4

256KB

(4) 32K x 8

(4) 32K x 8

(3) 16K x 4

CACHE JUMPER CONFIGURATION

Size

JP5

JP6

JP7

JP8

JP9

64KB

2 & 3

1 & 2

1 & 2

Open

2 & 3

128KB

2 & 3

1 & 2

2 & 3

Closed

2 & 3

256KB

2 & 3

2 & 3

2 & 3

Closed

1 & 2

Note: Pins designated should be in the closed position.