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286G Motherboard Settings and Configuration






SINGA

286G

Processor

80286

Processor Speed

12MHz

Chip Set

GC

Max. Onboard DRAM

8MB

Cache

None

BIOS

Quadtel

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Reset switch

JP4

Speaker

J2

Turbo LED

JP12

Power LED & keylock

J8

Turbo switch

JP14

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Factory configured - do not alter

JP1

N/A

I/O wait state select one

JP5

Open

 

I/O wait states select zero

JP5

Closed

NPU clock select synchronous with CPU

JP9

pins 1 & 2 closed

 

NPU clock select synchronous with OSC1

JP9

pins 2 & 3 closed

Monitor type select color

JP13

Closed

 

Monitor type select monochrome

JP13

Open

Parity check enabled

JP19

pins 1 & 2 closed

 

Parity check disabled

JP19

pins 2 & 3 closed

Communications port select COM1/COM2

JP20

Closed

 

Communications port select COM3/COM4

JP20

Open

Enable IRQ5 for parallel port

SW1/1

On

 

Enable IRQ7 for parallel port

SW1/2

On

Enable IRQ3 for serial port 2

SW1/3

On

Enable IRQ4 for serial port 1

SW1/4

On

Port select LPT1

SW1/5

On

 

Port select LPT2

SW1/5

Off

Printer port 1 enabled

SW1/6

On

 

Printer port 1 disabled

SW1/6

Off

Serial port S1 enabled

SW1/7

On

 

Serial port S1 disabled

SW1/7

Off

Serial port S2 enabled

SW1/8

On

 

Serial port S2 disabled

SW1/8

Off

Factory configured - do not alter

SW2/1

N/A

Memory between 640 and 1024KB available

SW2/2

On

 

Memory between 640 and 1024KB not available

SW2/2

Off

SIMM type at Bank 0select 256K x 9

SW2/3

On

 

SIMM type at Bank 0select 1M x 9

SW2/3

Off

I/O speed select slow

SW2/6

On

 

I/O speed select fast

SW2/6

Off

Note:The location of I/O ports is unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

512KB

(18) 41256

NONE

NONE

NONE

512KB

NONE

NONE

(2) 256K x 9

NONE

1MB

(18) 41256

(18) 41256

NONE

NONE

1MB

NONE

NONE

(2) 256K x 9

(2) 256K x 9

1.5MB

(18) 41256

(18) 41256

(2) 256K x 9

NONE

1.5MB

(18) 41256

NONE

(2) 256K x 9

(2) 256K x 9

2MB

(18) 411000

NONE

NONE

NONE

2MB

NONE

NONE

(2) 1M x 9

NONE

3MB

(18) 411000

NONE

(2) 256K x 9

(2) 256K x 9

4MB

(18) 411000

(18) 411000

(2) 1M x 9

NONE

4MB

NONE

NONE

(2) 1M x 9

(2) 1M x 9

5MB

(18) 411000

(18) 411000

(2) 256K x 9

(2) 256K x 9

5MB

(18) 41256

(18) 41256

(2) 1M x 9

(2) 1M x 9

6MB

(18) 411000

(18) 411000

(2) 1M x 9

NONE

8MB

(18) 411000

(18) 411000

(2) 1M x 9

(2) 1M x 9

DRAM CONFIGURATION

Size

JP15

JP16

JP17

JP18

512KB

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

512KB

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

1MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

1MB

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

1.5MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

1.5MB

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

2MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

2MB

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

3MB

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

4MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

4MB

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

5MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

5MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

6MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

8MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

BIOS CONFIGURATION

Size

JP3

JP21

27128

pins 1 & 2 closed

pins 1 & 2 closed

27256

pins 2 & 3 closed

pins 2 & 3 closed

27512

pins 2 & 3 closed

pins 2 & 3 closed








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