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80386 P9

UNIDENTIFIED

80386 P9

Processor

AM386SX/80386SX

Processor Speed

16/20/25/33MHz

Chip Set

VLSI

Video Chip Set

None

Maximum Onboard Memory

16MB

Maximum Video Memory

None

Cache

None

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

None

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP1

Turbo LED

JP7

Reset switch

JP5

Speaker

JP8

Turbo switch

JP6

Power LED & keylock

JP9

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Monitor type select color

JP2

Unidentified

 

Monitor type select monochrome

JP2

Unidentified

Factory configured - do not alter

JP3

Unidentified

Factory configured - do not alter

JP4

Unidentified

 

NPU synchronous with CPU

JP11

Pins 2 & 3 closed

 

NPU asynchronous with CPU

JP11

Pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

P 0

Bank 1

P 1

Bank 2

Bank 3

512KB (A)

(4) 44256

(2) 41256

None

None

None

None

512KB (B)

None

None

None

None

(2) 256K x 9

None

512KB (C)

(4) 44256

(2) 41256

None

None

None

None

1MB (A)

(4) 44256

(2) 41256

(4) 44256

(2) 41256

None

None

1MB (B)

None

None

None

None

(2) 256K x 9

(2) 256K x 9

1MB (C)

(4) 44256

(2) 41256

(4) 44256

(2) 41256

None

None

1.5MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 256K x 9

None

2MB (A)

None

None

None

None

(2) 1M x 9

None

2MB (B)

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 256K x 9

(2) 256K x 9

3MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 1M x 9

None

4MB

None

None

None

None

(2) 1M x 9

(2) 1M x 9

5MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 1M x 9

(2) 1M x 9

8MB

None

None

None

None

(2) 4M x 9

None

16MB

None

None

None

None

(2) 4M x 9

(2) 4M x 9

DRAM JUMPER CONFIGURATION

Size

JP12

JP13

512KB (A)

Pins 1 & 2 closed

Pins 1 & 2 closed

512KB (B)

Pins 1 & 2 closed

Pins 1 & 2 closed

512KB (C)

Pins 2 & 3 closed

Pins 2 & 3 closed

1MB (A)

Pins 1 & 2 closed

Pins 1 & 2 closed

1MB (B)

Pins 1 & 2 closed

Pins 1 & 2 closed

1MB (C)

Pins 2 & 3 closed

Pins 2 & 3 closed

1.5MB

Pins 2 & 3 closed

Pins 2 & 3 closed

2MB (A)

Pins 1 & 2 closed

Pins 1 & 2 closed

2MB (B)

Pins 2 & 3 closed

Pins 2 & 3 closed

3MB

Pins 2 & 3 closed

Pins 2 & 3 closed

4MB

Pins 1 & 2 closed

Pins 1 & 2 closed

5MB

Pins 2 & 3 closed

Pins 2 & 3 closed

8MB

Pins 1 & 2 closed

Pins 1 & 2 closed

16MB

Pins 1 & 2 closed

Pins 1 & 2 closed