HwMuseum | Index

SINGA

286/12

Processor

80286

Processor Speed

12/16/20MHz

Chip Set

C & T

Max. Onboard DRAM

1MB

Cache

None

BIOS

Phoenix

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo switch

J1

Power LED & keylock

J6

External battery

J3

Reset switch

J15

Speaker

J5

Turbo LED

J16

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

»

CPU speed select 12MHz

J1

pins 1 & 2 closed

 

CPU speed select 8MHz

J1

pins 2 & 3 closed

»

CPU Speed select switchable at turbo switch

J2

pins 1 & 2 closed

 

CPU Speed select switchable at keyboard

J2

pins 2 & 3 closed

»

DMA clock speed select iOSC/2

J4

pins 2 & 3 closed

 

DMA clock speed select iOSC/1

J4

pins 1 & 2 closed

»

DRAM access speed select 8MHz

J10

pins 1 & 2 closed

 

DRAM access speed select 12MHz

J10

pins 2 & 3 closed

»

BIOS access speed select 8MHz

J11

pins 2 & 3 closed

 

BIOS access speed select 12MHz

J11

pins 1 & 2 closed

»

DMA clock slow down enabled

J12

pins 1 & 2 closed

 

DMA clock slow down disabled

J12

pins 2 & 3 closed

»

Keyboard controller speed select 8MHz

J13

pins 1 & 2 closed

 

Keyboard controller speed select 4MHz

J13

pins 2 & 3 closed

»

NPU speed select 8MHz

J14

pins 2 & 3 closed

 

NPU speed select 4.77MHz

J14

pins 1 & 2 closed

»

Battery type select internal

J17

Closed

 

Battery type select external

J17

Open

»

Battery charge mode select normal

J18

Open

 

Battery charge mode select fast

J18

Closed

»

Monitor type select color

S1/3

On

 

Monitor type select monochrome

S1/3

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

256KB

(18) 4164

(18) 4164

512KB

(18) 41256

NONE

640KB

(18) 41256

(18) 4164

1MB

(18) 41256

(18) 41256

DRAM SWITCH CONFIGURATION

Size

S1/1

S1/2

S1/4

256KB

On

On

Off

512KB

Off

On

Off

640KB

On

Off

Off

1MB (512KB base)

Off

Off

Off

1MB (640KB base)

Off

Off

On