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CMC-820

UNIDENTIFIED

CMC-820

Processor

80386DX

Processor Speed

10/20MHz

Chip Set

C & T

Max. onboard DRAM

16MB

Cache

None

BIOS

Unknown

Dimensions

330mm x 218mm

I/O Options

32-bit external memory cards (2)

NPU Options

80387DX/3167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Speaker

J11

Turbo LED

J7

Keylock

J12

Reset Switch

J10

32-bit system memory cards

S1 & S2

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

BIOS type select 27128 or 27256

J3

pins 1 & 2 closed

 

BIOS type select 27512

J3

pins 2 & 3 closed

Monitor type select color

J5

Closed

 

Monitor type select monochrome

J5

Open

NPU enabled

J6

Closed

 

NPU disabled

J6

Open

NPU type select Intel or 80387

J9

Closed

 

NPU type select Weitek 3167

J9

Open

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) 256K x 9

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

NONE

NONE

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

10MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

Note:The numbering of bank 0 and bank 1 are located on the system board.

Banks 2 & 3 are located on the external memory card.

CPU SPEED CONFIGURATION

Speed

J4

J8

10MHz

pins 2 & 3 closed

pins 1 & 2 closed

20MHz

pins 1 & 2 closed

pins 2 & 3 closed

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port DB-9

J101

Parallel port DB-9

J103

Serial port 10-pins header

J102

Parallel port 10-pins header

J104

I/O CONFIGURATION

Port

SW1/switch 1

SW1/switch 2

SW1/switch 3

SW1/switch 4

Serial port DB-9

On

Off

On

On

Serial port 10-pins header

On

On

On

Off

Parallel port DB-9

On

On

Off

On

Parallel port 10-pins header

Off

On

On

On