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SY-021

SOYO COMPUTER CO., LTD.

SY-021

   

Processor

80386DX/80486SX/80486DX

Processor Speed

25/33/40/50MHz

Chip Set

Intel

Max. Onboard DRAM

32MB

Cache

64/256KB (on CPU/Cache card)

BIOS

Intel

Dimensions

330mm x 218mm

I/O Options

32-bit external CPU/Cache card slot, bus mouse, floppy drive interface, parallel port, serial port

NPU Options

None

   

CONNECTIONS

Purpose

Location

Purpose

Location

32-bit external CPU/Cache card

CN1

Speaker

J18

Bus mouse

J2

Reset switch

J19

Serial port

J3

External battery

J20

Parallel port

J5

Turbo switch

J21

Floppy drive interface

J7

Turbo LED

J22

Power LED & keylock

J17

   

Note:The Turbo switch and Turbo LED may not be present on all board revisions.

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Floppy drive interface select 1.44MB

J6

Open

 

Floppy drive interface select 1.2MB

J6

pins 1 & 2 closed

Wait states select zero

J8

Open

 

Wait states select one

J8

Closed

Posted write control enabled

J9

Open

 

Posted write control disabled

J9

Closed

Monitor type select monochrome

JP3

Open

 

Monitor type select color

JP3

Closed

CMOS memory normal operation

JP5

pins 1 & 2 closed

 

CMOS memory clear

JP5

pins 2 & 3 closed

Note:Jumper JP3 and JP5 may not be present on all board revisions.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

4MB

(4) 256K x 36

NONE

8MB

(4) 256K x 36

(4) 256K x 36

8MB

(4) 512K x 36

NONE

12MB

(4) 512K x 36

(4) 256K x 36

16MB

(4) 512K x 36

(4) 512K x 36

16MB

(4) 1M x 36

NONE

20MB

(4) 1M x 36

(4) 256K x 36

24MB

(4) 1M x 36

(4) 512K x 36

32MB

(4) 1M x 36

(4) 1M x 36

32MB

(4) 2M x 36

NONE

36MB

(4) 2M x 36

(4) 256K x 36

40MB

(4) 2M x 36

(4) 512K x 36

48MB

(4) 2M x 36

(4) 1M x 36

64MB

(4) 2M x 36

(4) 2M x 36

64MB

(4) 4M x 36

NONE

68MB

(4) 4M x 36

(4) 256K x 36

72MB

(4) 4M x 36

(4) 512K x 36

80MB

(4) 4M x 36

(4) 1M x 36

96MB

(4) 4M x 36

(4) 2M x 36

128MB

(4) 4M x 36

(4) 4M x 36