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SY-033 A2/A5/A1M

SOYO COMPUTER CO., LTD.

SY-033 A2/A5/A1M

Device Type

Mainboard

Processor

Pentium

Processor Speed

75/90/100MHz

Chip Set

Unidentified

Maximum Onboard Memory

128MB

Cache

256/512/1024KB

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

32-bit PCI slots (4)

CONNECTIONS

Purpose

Location

Purpose

Location

Green PC connector

BSW1

Reset switch

J19

5v power

J2

Turbo switch

J21

3.3v power

J3

Turbo LED

J22

Power LED & keylock

J17

Chassis fan power

JP9

Speaker

J18

32-bit PCI slots

PC1 PC4

USER CONFIGURABLE SETTINGS

Function

Label

Position

BIOS type select EPROM

JP1

Pins 2 & 3, 4 & 5 closed

 

BIOS type select flash

JP1

Pins 1 & 2, 5 & 6 closed

Monitor type select color

JP3

Closed

 

Monitor type select monochrome

JP3

Open

Factory configured - do not alter

JP5

Unidentified

Factory configured - do not alter

JP7

Pins 2 & 3 closed

External fan controlled by JP18

JP8

Pins 1 & 2 closed

 

External fan always enabled

JP8

Pins 2 & 3 closed

Factory configured - do not alter

JP11

Pins 1 & 2 closed

Factory configured - do not alter

JP12

Pins 2 & 3 closed

Factory configured - do not alter

JP13

Pins 1 & 2 closed

Clock generator select stopped by STPCLK

JP17

Pins 1 & 2 closed

 

Clock generator select stopped by SMOUT

JP17

Pins 2 & 3 closed

Fan control select stopped by STPCLK

JP18

Pins 1 & 2 closed

 

Fan control select stopped by SMOUT

JP18

Pins 2 & 3 closed

Factory configured - do not alter

JP20

Pins 2 & 3 closed

Factory configured - do not alter

SLED

Unidentified

Note: The location of JP8 is unidentified.

SIMM CONFIGURATION

Size

Bank 0

Bank 1

2MB

(2) 256K x 36

None

4MB

(2) 512K x 36

None

4MB

(2) 256K x 36

(2) 256K x 36

8MB

(2) 1M x 36

None

8MB

(2) 512K x 36

(2) 512K x 36

12MB

(2) 512K x 36

(2) 1M x 36

16MB

(2) 2M x 36

None

16MB

(2) 1M x 36

(2) 1M x 36

20MB

(2) 512K x 36

(2) 2M x 36

24MB

(2) 1M x 36

(2) 2M x 36

32MB

(2) 4M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

36MB

(2) 512K x 36

(2) 4M x 36

40MB

(2) 1M x 36

(2) 4M x 36

48MB

(2) 2M x 36

(2) 4M x 36

64MB

(2) 8M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

72MB

(2) 1M x 36

(2) 8M x 36

80MB

(2) 2M x 36

(2) 8M x 36

96MB

(2) 4M x 36

(2) 8M x 36

128MB

(2) 8M x 36

(2) 8M x 36

128MB

(2) 16M x 36

None

SIMM JUMPER CONFIGURATION

Size

JP15

JP16

2MB

Pins 1 & 2 closed

Pins 1 & 2 closed

4MB

Pins 1 & 2 closed

Pins 1 & 2 closed

4MB

Pins 2 & 3 closed

Pins 2 & 3 closed

8MB

Pins 2 & 3 closed

Pins 2 & 3 closed

8MB

Pins 1 & 2 closed

Pins 1 & 2 closed

12MB

Pins 1 & 2 closed

Pins 1 & 2 closed

16MB

Pins 1 & 2 closed

Pins 1 & 2 closed

16MB

Pins 2 & 3 closed

Pins 2 & 3 closed

20MB

Pins 2 & 3 closed

Pins 2 & 3 closed

24MB

Pins 1 & 2 closed

Pins 1 & 2 closed

32MB

Pins 2 & 3 closed

Pins 2 & 3 closed

32MB

Pins 1 & 2 closed

Pins 1 & 2 closed

36MB

Pins 2 & 3 closed

Pins 2 & 3 closed

40MB

Pins 1 & 2 closed

Pins 1 & 2 closed

48MB

Pins 2 & 3 closed

Pins 2 & 3 closed

64MB

Pins 1 & 2 closed

Pins 1 & 2 closed

64MB

Pins 2 & 3 closed

Pins 2 & 3 closed

72MB

Pins 1 & 2 closed

Pins 1 & 2 closed

80MB

Pins 2 & 3 closed

Pins 2 & 3 closed

96MB

Pins 1 & 2 closed

Pins 1 & 2 closed

128MB

Pins 2 & 3 closed

Pins 2 & 3 closed

128MB

Pins 1 & 2 closed

Pins 1 & 2 closed

CACHE CONFIGURATION

Size

Bank 0

TAG

256KB

(8) 32K x 8

(1) 8K x 8

512KB

(8) 64K x 8

(1) 16K x 8

1MB

(8) 128K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP10

JP14

JP20

256KB

Pins 2 & 3 closed

Pins 1 & 2 closed

Open

512KB

Pins 1 & 2 closed

Pins 1 & 2 closed

Closed

1MB

Pins 2 & 3 closed

Pins 2 & 3 closed

Closed

CPU SPEED SELECTION

CPU speed

Clock speed

Multiplier

JP2

JP4

JP6

75MHz

50MHz

1.5x

Open

Open

Open

90MHz

60MHz

1.5x

Closed

Open

Open

100MHz

66MHz

1.5x

Closed

Closed

Closed