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SBC8257

AXIOM TECHNOLOGY, INC.

SBC8257

Processor

CX M1/AM K5/Pentium

Processor Speed

75/90/100/120/133/150/166/200MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

128MB (EDO supported)

Maximum Video Memory

1MB

Cache

256/512KB

BIOS

Award

Dimensions

185mm x 122mm

I/O Options

Floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port/keyboard, serial ports (2), VGA port, flat panel connector, PC104 connectors (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

CN1

Auxiliarty keyboard connector

EXKB

VGA port

CN2

Green PC connector

GRN

Serial port 2

CN3

IDE interface LED

HDL

Parallel port

CN4

Reset switch

JP8

Floppy drive interface

CN5

Power LED & keylock

KBL

IDE interface 1

CN6

Speaker

SPK

IDE interface 2

CN7

Turbo LED

TBL

Flat panel connector

CN8

PC104 connector

104AB

PS/2 mouse port/keyboard

CN9

PC104 connector

104CD

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(1) 256K x 36

None

2MB

(1) 256K x 36

(1) 256K x 36

2MB

(1) 512K x 36

None

3MB

(1) 256K x 36

(1) 512K x 36

4MB

(1) 512K x 36

(1) 512K x 36

4MB

(1) 1M x 36

None

5MB

(1) 256K x 36

(1) 1M x 36

6MB

(1) 512K x 36

(1) 1M x 36

8MB

(1) 1M x 36

(1) 1M x 36

8MB

(1) 2M x 36

None

10MB

(1) 512K x 36

(1) 2M x 36

12MB

(1) 1M x 36

(1) 2M x 36

16MB

(1) 2M x 36

(1) 2M x 36

20MB

(1) 1M x 36

(1) 4M x 36

24MB

(1) 2M x 36

(1) 4M x 36

32MB

(1) 4M x 36

(1) 4M x 36

32MB

(1) 8M x 36

None

36MB

(1) 1M x 36

(1) 8M x 36

40MB

(1) 2M x 36

(1) 8M x 36

48MB

(1) 4M x 36

(1) 8M x 36

64MB

(1) 8M x 36

(1) 8M x 36

96MB

(1) 8M x 36

(1) 16M x 36

128MB

(1) 16M x 36

(1) 16M x 36

Note: Board accepts EDO memory.

CACHE CONFIGURATION

Note: The location of the cache is unidentified.

VIDEO MEMORY CONFIGURATION

Note: 1MB video memory is factory installed and not configurable.

CPU SPEED SELECTION (CYRIX)

CPU speed

Clock speed

Multiplier

JP2

JP3

JP4

JP6

120MHz

50MHz

2x

Open

Open

Closed

3 & 5, 4 & 6

150MHz

60MHz

2x

Open

Open

Closed

1 & 3, 4 & 6

166MHz

66MHz

2x

Open

Open

Closed

2 & 4, 3 & 5

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (AMD)

Note: AMD CPU configuration is unidentified.

CPU SPEED SELECTION (INTEL)

CPU speed

Clock speed

Multiplier

JP2

JP3

JP4

JP6

75MHz

50MHz

1.5x

Open

Open

Open

3 & 5, 4 & 6

90MHz

60MHz

1.5x

Open

Open

Open

1 & 3, 4 & 6

100MHz

66MHz

1.5x

Open

Open

Open

2 & 4, 3 & 5

120MHz

60MHz

2x

Closed

Open

Open

1 & 3, 4 & 6

133MHz

66MHz

2x

Closed

Open

Open

2 & 4, 3 & 5

150MHz

50MHz

2.5x

Open

Closed

Open

3 & 5, 4 & 6

166MHz

66MHz

2.5x

Closed

Closed

Open

2 & 4, 3 & 5

200MHz

66MHz

3x

Open

Closed

Open

2 & 4, 3 & 5

Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION

Voltage

JP5

2.5v

Pins 5 & 6 closed

2.7v

Pins 7 & 8 closed

3.3v

Pins 1 & 2 closed

3.52v

Pins 3 & 4 closed

SERIAL PORT 2 SELECTION

Setting

JP7

RS-232

1 & 2

 

RS-422

1 & 3, 5 & 6, 7 & 8, 9 & 10, 11 & 12, 17 & 18, 19 & 20, 21 & 22, 23 & 24

 

RS-485

1 & 3, 4 & 6, 7 & 8, 9 & 10, 11 & 12, 13 & 14, 15 & 16, 17 & 18, 19 & 20, 21 & 22, 23 & 24

Note: Pins designated should be in the closed position.

KYEBOARD/MOUSE SELECTION

Setting

JP9

JP10

CN8 used as keyboard

Pins 2 & 3 closed

Pins 2 & 3 closed

CN8 used as PS/2 mouse

Pins 1 & 2 closed

Pins 1 & 2 closed