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C & T TURBO MAINBOARD

UNIDENTIFIED

C & T TURBO MAINBOARD

Processor

80286

Processor Speed

12 MHz

Chip Set

C & T

Max. Onboard DRAM

4MB

Cache

None

BIOS

AMI/C & T

Dimensions

260mm x 220mm

I/O Options

None

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

BAT

Turbo LED

JP1

Power LED & keylock

J1

Reset switch

JP2

Speaker

J2

Turbo switch

JP3

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

NPU synchronous with CPU

JP4

pins 1 & 2 closed

 

NPU asynchronous with CPU

JP4

pins 2 & 3 closed

Monitor type select color

JP6

pins 2 & 3 closed

 

Monitor type select monochrome

JP6

pins 1 & 2 closed

Power good signal detect from power supply

JP7

pins 2 & 3 closed

 

Power good signal detect from board

JP7

pins 1 & 2 closed

DRAM CONFIGURATION (DIP)

Size

Bank 0

Bank 1

512KB

(4) 44256

NONE

640KB

(4) 44256

(4) 4464

1MB

(4) 44256

(4) 44256

DRAM PARITY CONFIGURATION (DIP)

Size

P0

P1

512KB

(2) 41256

NONE

640KB

(2) 41256

(2) 4164

1MB

(2) 41256

(2) 41256

DRAM CONFIGURATION (SIP)

Size

Bank 0

Bank 1

512KB

(2) 256K x 9

NONE

1MB

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

4MB

(2) 1M x 9

(2) 1M x 9