GMB-486SPS (VER. 1.03)

VEXTREC TECNHOLOGY, INC.

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

»

Turbo enabled

J5

Pins 2 & 3 closed

Turbo disabled

J5

Pins 1 & 2 closed

»

Monitor type select color

JP33

Closed

Monitor type select monochrome

JP33

Open

»

CMOS memory normal operation

JP38

Pins 1 & 2 closed

CMOS memory clear

JP38

Pins 2 & 3 closed

»

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 (CON’T)

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 (CON’T)

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 (CON’T)

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 (CON’T)

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

»
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

»
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

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
»	Turbo enabled	J5	Pins 2 & 3 closed
	Turbo disabled	J5	Pins 1 & 2 closed
»	Monitor type select color	JP33	Closed
	Monitor type select monochrome	JP33	Open
»	CMOS memory normal operation	JP38	Pins 1 & 2 closed
	CMOS memory clear	JP38	Pins 2 & 3 closed
»	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 (CON’T)
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 (CON’T)
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 (CON’T)
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 (CON’T)
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
»	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
»	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