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RACER-286

DIAMOND FLOWER, INC.

RACER-286

Processor

80286 (exact location unknown)

Processor Speed

6/12.5MHz

Chip Set

Suntac

Max. Onboard DRAM

4MB

Cache

None

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J20

External battery

JP12

Turbo LED

JP8

Reset switch

JP6

Speaker

JP10

   

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Wait state select 0 wait states

JP5

Closed

 

Wait state select 1 wait state

JP5

Open

Clock speed control keyboard

JP9

pins 1 & 2 closed

 

Clock speed control DIP switch

JP9

pins 2 & 3 closed

On board battery enabled

JP11

Closed

 

On board battery disabled

JP11

Open

Monitor type select color

SW1/2

On

 

Monitor type select monochrome

SW1/2

Off

Parity check enabled

SW1/3

On

 

Parity check disabled

SW1/3

Off

Port address select 0E8H

SW1/4

On

 

Port address select 098H

SW1/4

Off

BIOS type select 27128

SW1/5

On

 

BIOS type select 27256

SW1/5

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

512KB

(16) 41256

NONE

NONE

NONE

512KB

NONE

NONE

(4) 44256

NONE

640KB

(16) 41256

(16) 4164

NONE

NONE

1MB

(16) 41256

(16) 41256

NONE

NONE

1MB

NONE

NONE

(4) 44256

(4) 44256

2MB

(16) 411000

NONE

NONE

 

4MB

(16) 411000

(16) 411000

NONE

NONE

Note: When installing the above chips, do not use sockets IC9, IC21, IC36 & IC45.

DRAM CONFIGURATION (PARITY CHIP)

Size

IC9, IC21

IC36, IC45

U38 - U39

U40 - U41

512KB

(2) 41256

NONE

NONE

NONE

512KB

NONE

NONE

(2) 41256

NONE

640KB

(2) 41256

(2) 4164

NONE

NONE

1MB

(2) 41256

(2) 41256

NONE

NONE

1MB

NONE

NONE

(2) 41256

(2) 41256

2MB

(2) 411000

NONE

NONE

NONE

4MB

(2) 411000

(2) 411000

NONE

NONE

Note:This section is used only if parity chips are installed.

DRAM SWITCH CONFIGURATION

Size

SW1/6

SW1/7

SW1/8

Conventional

Extended

Expanded

512KB

On

On

On

512KB

0KB

0KB

640KB

On

On

Off

640KB

0KB

0KB

1MB

On

Off

On

640KB

384KB

0KB

1MB

On

Off

Off

640KB

0KB

384KB

2MB

Off

On

On

640KB

1408KB

0KB

2MB

Off

On

Off

640KB

0KB

1408KB

4MB

Off

Off

On

640KB

3456KB

0KB

4MB

Off

Off

Off

640KB

0KB

3456KB

CPU SPEED CONFIGURATION

Speed

JP7

SW1/1

6MHz

Open

On

12.5MHz

Closed

Off

KEYBOARD BIOS CONFIGURATION

Connector

JP1

JP2

JP3

JP4

8742

pin 32

pin 27

pin 23

pin30