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YL-A09S/YL-A09H

UNIDENTIFIED

YL-A09S/YL-A09H

Processor

80286

Processor Speed

16MHz

Chip Set

Headland

Max. Onboard DRAM

5MB

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP1

Reset switch

JP8

Power LED & keylock

JP6

Turbo LED

JP9

Speaker

JP7

Turbo switch

JP10

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

 

Internal delay select GC113

F13

pins 2 & 3 closed

 

Internal delay select GC103

F13

pins 1 & 2 closed

Factory configured - do not alter

JP5

N/A

 

BIOS type select 27128

JP13

pins 1 & 2 closed

 

BIOS type select 27256

JP13

pins 2 & 3 closed

NPU mode select synchronous with CPU

JP14

pins 2 & 3 closed

 

NPU mode select synchronous with oscillator installed at Y3

JP14

pins 1 & 2 closed

Parity check enabled

JP15

pins 1 & 2 closed

 

Parity check disabled

JP15

pins 2 & 3 closed

Monitor type select color

SW1/5

On

 

Monitor type select monochrome

SW1/5

Off

Shadow RAM enabled

SW1/6

Off

 

Shadow RAM disabled

SW1/6

On

Bus speed select fast

SW1/7

Off

 

Bus speed select slow

SW1/7

On

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

Bank 4

Bank 5

512KB

(4) 44256

NONE

NONE

NONE

NONE

NONE

512KB

NONE

NONE

NONE

NONE

(2) 256K x 9

NONE

1MB

(4) 44256

(4) 44256

NONE

NONE

NONE

NONE

1MB

NONE

NONE

NONE

NONE

(2) 256K x 9

(2) 256K x 9

1.5MB

(4) 44256

(4) 44256

(4) 44256

NONE

NONE

NONE

1.5MB

NONE

NONE

(4) 44256

NONE

(2) 256K x 9

(2) 256K x 9

2MB

(4) 44256

(4) 44256

(4) 44256

(4) 44256

NONE

NONE

2MB

NONE

NONE

(4) 44256

(4) 44256

(2) 256K x 9

(2) 256K x 9

2MB

NONE

NONE

NONE

NONE

(2) 1M x 9

NONE

4MB

NONE

NONE

NONE

NONE

(2) 1M x 9

(2) 1M x 9

5MB

NONE

NONE

(4) 44256

(4) 44256

(2) 1M x 9

(2) 1M x 9

Note:Locations of Banks 0, 1, 2, & 3 are unidentified.

DRAM JUMPER/SWITCH CONFIGURATION

Size

JP11

JP12

SW1/1

SW1/2

SW1/3

SW1/4

512KB

2 & 3, 5 & 6, 8 & 9

2 & 3, 5 & 6, 8 & 9

On

Off

Off

Off

512KB

1 & 2, 4 & 5, 7 & 8

1 & 2, 4 & 5, 7 & 8

On

Off

Off

Off

1MB

2 & 3, 5 & 6, 8 & 9

2 & 3, 5 & 6, 8 & 9

Off

On

Off

Off

1MB

1 & 2, 4 & 5, 7 & 8

1 & 2, 4 & 5, 7 & 8

Off

On

Off

Off

1.5MB

2 & 3, 5 & 6, 8 & 9

2 & 3, 5 & 6, 8 & 9

Off

Off

On

Off

1.5MB

1 & 2, 4 & 5, 7 & 8

1 & 2, 4 & 5, 7 & 8

Off

Off

On

Off

2MB

2 & 3, 5 & 6, 8 & 9

2 & 3, 5 & 6, 8 & 9

Off

On

On

Off

2MB

1 & 2, 4 & 5, 7 & 8

1 & 2, 4 & 5, 7 & 8

Off

On

On

Off

2MB

1 & 2, 4 & 5, 7 & 8

1 & 2, 4 & 5, 7 & 8

Off

Off

Off

On

4MB

1 & 2, 4 & 5, 7 & 8

1 & 2, 4 & 5, 7 & 8

Off

On

Off

On

5MB

1 & 2, 4 & 5, 7 & 8

1 & 2, 4 & 5, 7 & 8

On

On

On

On

Note:Pins designated should be in the closed postion