...because we can't all be on the bleeding edge...





GMB-486SPS (VER. 1.03)

GEMLIGHT COMPUTER, LTD.

GMB-486SPS (VER. 1.03)

Processor

AM486/UMCU5SX/80486SX/SL80486SX/CX486DX/AM486DX/80486DX/CX486DX2/AM486DX2/(SL)AM486DX2(WB)/(SL)AM486DX2(WT)/ 80486DX2/SL80486DX2/(SL)AM486DX4(WB)/(SL)AM486DX4(WT)/ AM486DX4/ 80486DX4/CXM1SC(WB)/CXM1SC(WT)/P24D/P24T

Processor Speed

20/25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ 100(internal)/120(internal)/133(internal)MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

128MB

Maximum Video Memory

None

Cache

64/128/256/512/1024KB

BIOS

Award

Dimensions

250mm x 220mm

I/O Options

32-bit PCI slots (4), floppy drive interface, game interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

J1

IDE interface 1

J12

Turbo LED

J2

IDE interface 2

J13

Power LED & keylock

J3

Serial port 1

J14

Speaker

J4

Serial port 2

J15

Turbo switch

J5

Game interface

J16

Green PC connector

J6

Parallel port

J17

IDE interface LED

J7

Floppy drive interface

J18

External battery

J8

32-bit PCI slots

PC1 - PC4

USER CONFIGURABLE SETTINGS

Function

Label

Position

Ľ

Turbo enabled

J5

Pins 2 & 3 closed

 

Turbo disabled

J5

Pins 1 & 2 closed

Ľ

Monitor type select color

JP33

Closed

 

Monitor type select monochrome

JP33

Open

Ľ

CMOS memory normal operation

JP38

Pins 1 & 2 closed

 

CMOS memory clear

JP38

Pins 2 & 3 closed

Ľ

Parallel port IRQ select IRQ7

JP51

Pins 1 & 2 closed

 

Parallel port IRQ select IRQ5

JP51

Pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

None

None

None

2MB

(1) 256K x 36

(1) 256K x 36

None

None

2MB

(1) 512K x 36

None

None

None

4MB

(1) 256K x 36

(1) 256K x 36

(1) 512K x 36

None

4MB

(1) 512K x 36

(1) 512K x 36

None

None

4MB

(1) 1M x 36

None

None

None

5MB

(1) 256K x 36

(1) 1M x 36

None

None

6MB

(1) 256K x 36

(1) 256K x 36

(1) 1M x 36

None

6MB

(1) 512K x 36

(1) 1M x 36

None

None

8MB

(1) 256K x 36

(1) 256K x 36

(1) 512K x 36

(1) 1M x 36

8MB

(1) 512K x 36

(1) 512K x 36

(1) 1M x 36

None

8MB

(1) 1M x 36

(1) 1M x 36

None

None

8MB

(1) 2M x 36

None

None

None

10MB

(1) 256K x 36

(1) 256K x 36

(1) 1M x 36

(1) 1M x 36

12MB

(1) 512K x 36

(1) 512K x 36

(1) 1M x 36

(1) 1M x 36

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

None

12MB

(1) 1M x 36

(1) 2M x 36

None

None

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 2M x 36

(1) 2M x 36

None

None

16MB

(1) 4M x 36

None

None

None

DRAM CONFIGURATION (CONíT)

Size

Bank 0

Bank 1

Bank 2

Bank 3

16MB

(1) 4M x 36

None

None

None

17MB

(1) 256K x 36

(1) 4M x 36

None

None

18MB

(1) 256K x 36

(1) 256K x 36

(1) 4M x 36

None

18MB

(1) 512K x 36

(1) 4M x 36

None

None

20MB

(1) 512K x 36

(1) 512K x 36

(1) 4M x 36

None

20MB

(1) 1M x 36

(1) 4M x 36

None

None

20MB

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

None

24MB

(1) 512K x 36

(1) 512K x 36

(1) 1M x 36

(1) 4M x 36

24MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

None

24MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

None

24MB

(1) 1M x 36

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

24MB

(1) 2M x 36

(1) 4M x 36

None

None

28MB

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

32MB

(1) 4M x 36

(1) 4M x 36

None

None

32MB

(1) 8M x 36

None

None

None

32MB

(1) 2M x 36

(1) 2M x 36

(1) 4M x 36

None

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

36MB

(1) 512K x 36

(1) 512K x 36

(1) 4M x 36

(1) 4M x 36

36MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

None

36MB

(1) 1M x 36

(1) 8M x 36

None

None

40MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

40MB

(1) 1M x 36

(1) 1M x 36

(1) 8M x 36

None

40MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 4M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

None

48MB

(1) 4M x 36

(1) 8M x 36

None

None

48MB

(1) 2M x 36

(1) 2M x 36

(1) 4M x 36

(1) 4M x 36

48MB

(1) 2M x 36

(1) 2M x 36

(1) 8M x 36

None

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 16M x 36

None

None

None

64MB

(1) 4M x 36

(1) 4M x 36

(1) 8M x 36

None

64MB

(1) 8M x 36

(1) 8M x 36

None

None

65MB

(1) 256K x 36

(1) 16M x 36

None

None

68MB

(1) 1M x 36

(1) 16M x 36

None

None

68MB

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

None

72MB

(1) 1M x 36

(1) 1M x 36

(1) 16M x 36

None

72MB

(1) 1M x 36

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

80MB

(1) 4M x 36

(1) 16M x 36

None

None

80MB

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

None

80MB

(1) 2M x 36

(1) 2M x 36

(1) 8M x 36

(1) 8M x 36

96MB

(1) 4M x 36

(1) 4M x 36

(1) 16M x 36

None

96MB

(1) 4M x 36

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

96MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

None

128MB

(1) 16M x 36

(1) 16M x 36

None

None

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

Unidentified

128KB

(4) 32K x 8

None

Unidentified

256KB (A)

(4) 32K x 8

(4) 32K x 8

Unidentified

256KB (B)

(4) 64K x 8

None

Unidentified

512KB (A)

(4) 64K x 8

(4) 64K x 8

Unidentified

512KB (B)

(4) 128K x 8

None

Unidentified

1MB

(4) 128K x 8

(4) 128K x 8

Unidentified

CACHE JUMPER CONFIGURATION

Size

JP19

JP24

JP25

JP26

64KB

1 & 2

1 & 2

Open

Open

128KB

1 & 2

2 & 3

Open

1 & 2

256KB (A)

1 & 2

2 & 3

Open

2 & 3

256KB (B)

1 & 2

2 & 3

Open

1 & 2, 3 & 4

512KB (A)

2 & 3

2 & 3

Open

2 & 3, 4 & 5

512KB (B)

2 & 3

2 & 3

1 & 2

1 & 2, 4 & 5

1MB

2 & 3

2 & 3

2 & 3

2 & 3, 4 & 5

Note: Pins designated should be in the closed position.

TAG JUMPER CONFIGURATION

Size

JP20

JP21

JP22

JP27

64KB

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

128KB

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

256KB (A)

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

256KB (B)

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

512KB (A)

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

512KB (B)

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

1MB

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

CPU SPEED SELECTION

Speed

JP3

JP18

S1

S2

S3

20MHz

1 & 2

1 & 2

Open

Open

Open

25MHz

1 & 2

1 & 2

Closed

Open

Open

33MHz

1 & 2

1 & 2

Closed

Closed

Closed

40MHz

1 & 2

1 & 2

Closed

Closed

Open

50iMHz

1 & 2

1 & 2

Closed

Open

Open

50MHz

2 & 3

1 & 2

Open

Open

Closed

66iMHz

1 & 2

1 & 2

Closed

Closed

Closed

75iMHz

1 & 2

1 & 2

Closed

Open

Open

CPU SPEED SELECTION (CONíT)

Speed

JP3

JP18

S1

S2

S3

80iMHz

1 & 2

1 & 2

Closed

Closed

Open

83iMHz

1 & 2

1 & 2

Closed

Closed

Closed

100iMHz

1 & 2

1 & 2

Closed

Closed

Closed

120iMHz

1 & 2

1 & 2

Closed

Closed

Open

133iMHz

1 & 2

1 & 2

Closed

Closed

Closed

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION

Type

JP4

JP5

JP6

JP7

JP8

AM486

Open

1 & 2

1 & 2

1 & 2

1 & 2

UMC U5SX

Open

Open

2 & 3

Open

2 & 3

80486SX

Open

Open

Open

Open

2 & 3

SL80486SX

Open

Open

1 & 2

Open

2 & 3

CX486DX

Open

Open

1 & 2

2 & 3

2 & 3

AM486DX

Open

2 & 3

1 & 2

1 & 2

2 & 3

80486DX

Open

Open

Open

Open

2 & 3

CX486DX2

Open

Open

1 & 2

2 & 3

2 & 3

AM486DX2

Open

2 & 3

1 & 2

1 & 2

2 & 3

(SL)AM486DX2 (WB)

Open

1 & 2

1 & 2

1 & 2

2 & 3

(SL)AM486DX2 (WT)

Open

2 & 3

1 & 2

1 & 2

2 & 3

80486DX2

Open

Open

Open

Open

2 & 3

SL80486DX2

Open

Open

1 & 2

1 & 2

2 & 3

(SL)AM486DX4 (WB)

Open

1 & 2

1 & 2

1 & 2

2 & 3

(SL)AM486DX4 (WT)

Open

2 & 3

1 & 2

1 & 2

2 & 3

AM486DX4

Open

1 & 2

1 & 2

1 & 2

2 & 3

80486DX4

Open

1 & 2

1 & 2

1 & 2

2 & 3

CX M1SC (WB)

Open

1 & 2

1 & 2

1 & 2

1 & 2

CX M1SC (WT)

Open

2 & 3

1 & 2

1 & 2

1 & 2

P24D

Open

Open

1 & 2

1 & 2

2 & 3

P24T

Open

Open

1 & 2

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CONíT)

Type

JP9

JP11

JP12

JP13

AM486

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 4 & 5 closed

UMC U5SX

Open

Open

Open

Open

80486SX

Open

Open

Open

Open

SL80486SX

Pins 2 & 3 closed

Open

Pins 1 & 2 closed

Pins 4 & 5 closed

CX486DX

Pins 1 & 2 closed

Open

Open

Pins 2 & 3 closed

AM486DX

Pins 2 & 3 closed

Open

Pins 1 & 2 closed

Pins 4 & 5 closed

80486DX

Open

Open

Open

Open

CX486DX2

Pins 1 & 2 closed

Open

Open

Pins 2 & 3 closed

AM486DX2

Pins 2 & 3 closed

Open

Pins 1 & 2 closed

Pins 4 & 5 closed

(SL)AM486DX2 (WB)

Pins 2 & 3 closed

Open

Pins 1 & 2 closed

Pins 4 & 5 closed

(SL)AM486DX2 (WT)

Pins 2 & 3 closed

Open

Pins 1 & 2 closed

Pins 4 & 5 closed

80486DX2

Open

Open

Open

Open

SL80486DX2

Pins 2 & 3 closed

Open

Pins 1 & 2 closed

Pins 4 & 5 closed

(SL)AM486DX4 (WB)

Pins 2 & 3 closed

Open

Pins 1 & 2 closed

Pins 4 & 5 closed

(SL)AM486DX4 (WT)

Pins 2 & 3 closed

Open

Pins 1 & 2 closed

Pins 4 & 5 closed

AM486DX4

Pins 2 & 3 closed

Open

Pins 1 & 2 closed

Pins 4 & 5 closed

80486DX4

Pins 2 & 3 closed

Open

Pins 1 & 2 closed

Pins 4 & 5 closed

CX M1SC (WB)

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 4 & 5 closed

CX M1SC (WT)

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 4 & 5 closed

P24D

Pins 2 & 3 closed

Open

Pins 1 & 2 closed

Pins 4 & 5 closed

P24T

Pins 2 & 3 closed

Open

Open

Pins 1 & 2 closed

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CONíT)

Type

JP14

JP15

JP16

JP17

AM486

1 & 2, 3 & 4

3 & 4

1 & 2, 3 & 4

Open

UMC U5SX

1 & 2, 3 & 4

1 & 2, 3 & 4

Open

3 & 4

80486SX

2 & 3

Open

Open

Open

SL80486SX

2 & 3

Open

3 & 4

Open

CX486DX

1 & 2, 3 & 4

3 & 4

2 & 3

2 & 3

AM486DX

1 & 2, 3 & 4

3 & 4

3 & 4

Open

80486DX

1 & 2, 3 & 4

3 & 4

Open

Open

CX486DX2

1 & 2, 3 & 4

3 & 4

2 & 3

2 & 3

AM486DX2

1 & 2, 3 & 4

3 & 4

3 & 4

Open

(SL)AM486DX2 (WB)

1 & 2, 3 & 4

3 & 4

3 & 4

Open

(SL)AM486DX2 (WT)

1 & 2, 3 & 4

3 & 4

3 & 4

Open

80486DX2

1 & 2, 3 & 4

3 & 4

Open

Open

SL80486DX2

1 & 2, 3 & 4

3 & 4

3 & 4

Open

(SL)AM486DX4 (WB)

1 & 2, 3 & 4

3 & 4

3 & 4

Open

(SL)AM486DX4 (WT)

1 & 2, 3 & 4

3 & 4

3 & 4

Open

AM486DX4

1 & 2, 3 & 4

3 & 4

3 & 4

Open

80486DX4

1 & 2, 3 & 4

3 & 4

3 & 4

Open

CX M1SC (WB)

1 & 2, 3 & 4

3 & 4

1 & 2

Open

CX M1SC (WT)

1 & 2, 3 & 4

3 & 4

1 & 2

Open

P24D

1 & 2, 3 & 4

3 & 4

3 & 4

Open

P24T

1 & 2, 3 & 4

2 & 3

3 & 4

1 & 2

Note: Pins designated should be in the closed position.

CPU MULTIPLIER SELECTION (DX4 ONLY)

Multiplier

JP10

2x

Pins 2 & 3 closed

3x

Open

CPU VOLTAGE SELECTION

Voltage

S4

S5

S6

3.3v

Pins 1 & 2 closed

Open

Open

3.45v

Open

Pins 1 & 2 closed

Open

3.6v

Open

Open

Pins 1 & 2 closed

4v

Open

Open

Open

5v

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

DMA CHANNEL SELECTION

Channel

JP36

JP37

JP52

JP53

Ľ

Printer

Open

Open

Pins 1 & 2 closed

Pins 1 & 2 closed

 

1

Pins 1 & 3 closed

Pins 1 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

 

3

Pins 2 & 4 closed

Pins 2 & 4 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

FLASH BIOS SELECTION

Setting

JP34

JP35

Ľ

EPROM

Pins 2 & 3 closed

Pins 2 & 3 closed

 

5v flash

Pins 2 & 3 closed

Pins 1 & 2 closed

 

12v flash

Pins 1 & 2 closed

Pins 1 & 2 closed