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GENESIS II 486 VESA/ISA

FORTRESS SYSTEMS INTERNATIONAL

GENESIS II 486 VESA/ISA

Processor

CX486SX/AM486SX/80486SX/CX486DX/AM486DX/80486DX/ CX486DX2/AM486DX2/80486DX2/CX486DX4/AM486DX4/80486DX4

Processor Speed

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

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

64MB

Maximum Video Memory

None

Cache

128/256/512/1024KB

BIOS

AMI/Award/MR BIOS

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slots (3), green PC connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

JP16

Green PC connector

JP20

Speaker

JP17

Turbo LED

JP21

Green PC LED

JP18

Reset switch

JP26

Turbo switch

JP19

32-bit VESA local bus slots

SL1 SL3

USER CONFIGURABLE SETTINGS

Function

Label

Position

CMOS memory normal operation

JP1

Pins 1 & 2 closed

 

CMOS memory clear

JP1

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

3MB

(1) 256K x 36

(1) 512K x 36

None

None

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

None

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

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

5MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 512K x 36

6MB

(1) 512K x 36

(1) 1M x 36

None

None

8MB

(1) 1M x 36

(1) 1M x 36

None

None

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

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

32MB

(1) 4M x 36

(1) 4M x 36

None

None

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

None

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

Note: Board accepts x 32 SIMMs.

DRAM JUMPER CONFIGURATION

Setting

JP70

1 BK installed

Pins 1 & 2 closed

2 BK installed

Pins 2 & 3 closed

CACHE CONFIGURATION

Size

Bank 0

Bank 1

128KB

(4) 32K x 8

None

256KB (A)

(4) 32K x 8

(4) 32K x 8

256KB (B)

(4) 64K x 8

None

512KB (A)

(4) 128K x 8

None

512KB (B)

(4) 64K x 8

(4) 64K x 8

1MB

(4) 128K x 8

(4) 128K x 8

CACHE JUMPER CONFIGURATION

Size

JP6

JP11

JP12

128KB

Open

Pins 2 & 3 closed

Pins 1 & 2 closed

256KB (A)

Open

Pins 1 & 2 closed

Pins 1 & 2 closed

256KB (B)

Open

Pins 2 & 3 closed

Pins 1 & 2 closed

512KB (A)

Open

Pins 2 & 3 closed

Pins 2 & 3 closed

512KB (B)

Pins 1 & 2 closed

Open

Pins 2 & 3 closed

1MB

Pins 2 & 3 closed

Open

Pins 2 & 3 closed

CPU SPEED SELECTION

Speed

JP2A

JP2B

JP2C

JP22

25MHz

Closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Open

33MHz

Closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Open

40MHz

Open

Pins 1 & 2 closed

Pins 2 & 3 closed

Closed

50iMHz

Closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Open

50MHz

Open

Pins 2 & 3 closed

Pins 1 & 2 closed

Closed

66iMHz

Closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Open

75iMHz

Closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Open

80iMHz

Open

Pins 1 & 2 closed

Pins 2 & 3 closed

Closed

100iMHz

Closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Open

120iMHz

Open

Pins 1 & 2 closed

Pins 2 & 3 closed

Closed

CPU TYPE SELECTION

Type

JP15

Cyrix

Pins 2 & 3 closed

AMD

Pins 1 & 2 closed

Intel

Pins 1 & 2 closed

VL BUS SPEED SELECTION

Speed

JP13

<= 33MHz

Closed

>33 MHz

Open

FLASH BIOS VOLTAGE SELECTION

Voltage

JP5

JP80

5v

Pins 1 & 2 closed

Pins 1 & 3, 2 & 4 closed

12v

Pins 2 & 3 closed

Pins 3 & 5, 4 & 6 closed