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





COMPACT 286 VER. 2

ABC COMPUTER COMPANY, LTD.

COMPACT 286 VER. 2

Processor

80286

Processor Speed

20MHz

Chip Set

C & T

Max. Onboard DRAM

8MB

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

E5

Speaker

J19

MIPS counter

E7

Power LED & keylock

J21

External battery

J17

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

NPU speed select 10MHz

E1 & E2

pins 1 & 2 closed

 

NPU speed select slow

E1 & E2

pins 2 & 3 closed

BIOS type select 27128

E3

pins 1 & 2 closed

 

BIOS type select 27256

E3

pins 2 & 3 closed

CMOS memory normal operation

E4

pins 1 & 2 closed

 

CMOS memory clear

E4

pins 2 & 3 closed

Reset enabled through hardware only

E6

pins 1 & 2 closed

 

Reset enabled through hardware and keyboard

E6

pins 2 & 3 closed

Monitor type select monochrome

SW1

pins 1 & 2 closed

 

Monitor type select color

SW1

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

512KB

(18) 41256

NONE

NONE

NONE

640KB

(18) 41256

(18) 4164

NONE

NONE

1MB

(18) 41256

(18) 41256

NONE

NONE

1.5MB

(18) 41256

(18) 41256

(18) 41256

NONE

1.64MB

(18) 41256

(18) 4164

(18) 41256

(18) 41256

2MB

(18) 41256

(18) 41256

(18) 41256

(18) 41256

2MB

(18) 411000

NONE

NONE

NONE

3MB

(18) 41256

(18) 41256

(18) 411000

NONE

4MB

(18) 411000

(18) 411000

NONE

NONE

4.64MB

(18) 41256

(18) 4164

(18) 411000

(18) 411000

5MB

(18) 41256

(18) 41256

(18) 411000

(18) 411000

6MB

(18) 411000

(18) 411000

(18) 411000

NONE

8MB

(18) 411000

(18) 411000

(18) 411000

(18) 411000

Note:Locations of banks within the DRAM area are unknown.