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MICRO 286-12/MICRO 286-16

UNIDENTIFIED

MICRO 286-12/MICRO 286-16

   

Processor

80286

Processor Speed

12/16MHz

Chip Set

G-2

Max. Onboard DRAM

4MB

Cache

None

BIOS

AMI

Dimensions

330.2mm x 218.4mm

I/O Options

None

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

P1

Turbo LED

P4

Speaker

P2

Turbo switch

P5

Reset switch

P3

   

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

CPU speed at boot select fast

S1/switch 1

open

 

CPU speed at boot select slow

S1/switch 1

closed

Bus speed select 6/8MHz

S1/switch 2

open

 

Bus speed select 12/16MHz

S1/switch 2

closed

 

DRAM speed select 0 wait states

W3

closed

 

DRAM speed select 1 wait state

W3

open

BIOS type select 27256

W4

pins 2 & 3 closed

 

BIOS type select 27128

W4

pins 1 & 2 closed

NPU mode select synchronous with CPU

W5

286CLK

 

NPU mode select synchronous with Oscillator installed at O1

W5

iOSC

Monitor type select color

W6

closed

 

Monitor type select monochrome

W6

open

Note:The max. and min. speeds of the bus are equal to the max. and min. speeds of the CPU.

e.g. A 16MHz system would have bus speeds of 8MHz (min.) and 16MHz (max).

DRAM CONFIGURATION

Size

Bank 0

Bank 1

W7

S1/Switch 3

S1/Switch 4

512KB

(18) 41256

NONE

pins 2 & 3 closed

closed

closed

640KB

(18) 41256

(18) 41256

pins 2 & 3 closed

closed

open

1MB

(18) 41256

(18) 41256

pins 2 & 3 closed

open

open

2MB

(18) 411000

NONE

pins 1 & 2 closed

open

closed

4MB

(18) 411000

(18) 411000

pins 1 & 2 closed

open

open