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SUPERMICRO 286

NORTHGATE COMPUTER SYSTEMS, INC.

SUPERMICRO 286

Processor

80286

Processor Speed

12/16/20MHz

Chip Set

VLSI

Max. Onboard DRAM

4MB

SRAM Cache

None

BIOS

Award

Dimensions

355mm x 304mm

I/O Options

16-bit onboard bus memory slot, parallel port, serial port (2)

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

J1

Parallel port

J201

Speaker

J2

Serial port 2 (COM2)

J202

External battery

J3

Serial port 1 (COM1)

J203

Turbo LED

J5

16-bit onboard bus memory slot

S1

Power LED & keylock

J6

   

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

RAM select 0 wait states

W3

On

 

RAM select 1 wait state

W3

Off

ROM select 0 wait states

W4

On

 

ROM select 1 wait state

W4

Off

Monitor type select color

W10

pins 2 & 3 closed

 

Monitor type select monochrome

W10

pins 1 & 2 closed

CPU speed select high

W11

Open

 

CPU speed select low

W11

pins 2 & 3 closed

 

CPU speed select keyboard control

W11

pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

W6

W7

512KB

(18) 41256

NONE

Off

On

1MB

(18) 41256

(18) 41256

Off

Off

2MB

(18) 411000

NONE

On

On

4MB

(18) 411000

(18) 411000

On

Off

MEMORY SPEED CONFIGURATION

Speed

W5

60ns

pins 1 & 2 closed

80ns

pins 1 & 2, 3 & 4 closed

100ns

pins 2 & 3 closed

Note:Speed is factory configured and should not be altered.

NPU SPEED CONFIGURATION

Speed

OSC

W1

W2

7.15MHz

7.15MHz

pins 1 & 2 closed

pins 3 & 4 closed

7.15MHz

21.45MHz

pins 2 & 3 closed

pins 3 & 4 closed

10.00MHz

10.00MHz

pins 1 & 2 closed

Pins 5 & 6 closed

10.00MHz

30.00MHz

pins 2 & 3 closed

Pins 5 & 6 closed

14.32MHz

14.32MHz

pins 1 & 2 closed

pins 1 & 2 closed

14.32MHz

42.96MHz

pins 2 & 3 closed

pins 1 & 2 closed

SERIAL PORT CONFIGURATION

Port 1 (J203)

Port 2 (J202)

SW201/1

SW201/2

SW202/1

SW202/2

COM1/IRQ4

COM2/IRQ3

Off

Off

On

On

COM1/IRQ4

Disabled

Off

On

On

Off

Disabled

COM2/IRQ3

Off

On

Off

On

Disabled

Disabled

On

On

N/A

N/A

PARALLEL PORT CONFIGURATION

LPT

IRQ

SW201/3

SW201/4

SW202/3

SW202/4

LPT1

IRQ5

Off

Off

On

Off

LPT1

IRQ7

Off

Off

Off

On

LPT2

IRQ5

Off

On

On

Off

LPT2

IRQ7

Off

On

Off

On

Disabled

N/A

On

N/A

N/A

N/A