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





BARRACUDA

I-BUS

BARRACUDA

Processor

CX486SX/80486SX/80486SX2/CX486DX/AM486DX/SL80486DX/80486DX/ CX486DX2/AM486DX2/SL80486DX2/80486DX2/80486DX4/P24D/Pentium Overdrive

Processor Speed

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

Chip Set

OPTI

Max. Onboard DRAM

128MB

Cache

64/128/256/512KB

BIOS

Unidentified

Dimensions

300mm x 89mm

I/O Options

Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

IDE interface

J3

Serial port 1

J30

Parallel port

J4

Serial port 2

J31

Speaker

J6

Auxiliary keyboard connector

J32

Chassis fan power

J8

Floppy drive interface

J33

IDE interface LED

J25

PS/2 mouse interface

J35

Reset switch

J26

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

 

PCI type select synchronous

J9

pins 2 & 4, 3 & 5 closed

 

PCI type select asynchronous

J9

pins 1 & 3, 4 & 6 closed

»

Primary IDE enabled

J14

pins 1 & 3 closed

 

Primary IDE disabled

J14

pins 1 & 3 open

 

Secondary IDE enabled

J14

pins 3 & 5 closed

 

Secondary IDE disabled

J14

pins 3 & 5 open

»

IDE interface enabled

J14

pins 2 & 4 closed

 

IDE interface disabled

J14

pins 4 & 6 closed

»

Floppy drive type select 1.44MB

J17

pins 1 & 2 closed

 

Floppy drive type select 2.88MB

J17

pins 3 & 4, 5 & 6 closed

»

CPU clock frequency select 8MHz

J19

pins 1 & 2 closed

 

CPU clock frequency select 16MHz (DX4 only)

J19

pins 2 & 3 closed

 

PCI adapters not installed

J20

pins 1 & 2 closed

 

PCI adapters installed

J20

pins 2 & 3 closed

 

IDE read prefetch enabled

J22

pins 1 & 2 closed

 

IDE read prefetch disabled

J22

pins 2 & 3 closed

»

Battery type select internal

J24

pins 2 & 3 closed

 

CMOS memory clear

J24

pins 1 & 2 closed

»

Mouse IRQ12 enabled

J27

Closed

 

Mouse IRQ12 disabled

J27

Open

»

IDE IRQ14 enabled

J28

Closed

 

IDE IRQ14 disabled

J28

Open

»

Factory configured - do not alter

J29

N/A

 

Password enabled

J36

Closed

 

Password disabled

J36

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

2MB

(1) 512K x 36

NONE

NONE

NONE

4MB

(1) 512K x 36

(1) 512K x 36

NONE

NONE

4MB

(1) 1M x 36

NONE

NONE

NONE

8MB

(1) 2M x 36

NONE

NONE

NONE

8MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

10MB

(1) 2M x 36

(1) 512K x 36

NONE

NONE

10MB

(1) 512K x 36

(1) 2M x 36

NONE

NONE

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

14MB

(1) 2M x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

16MB

(1) 4M x 36

NONE

NONE

NONE

16MB

(1) 2M 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

18MB

(1) 4M x 36

(1) 512K x 36

NONE

NONE

18MB

(1) 512K x 36

(1) 2M x 36

(1) 2M x 36

NONE

20MB

(1) 4M x 36

(1) 1M x 36

NONE

NONE

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

20MB

(1) 1M x 36

(1) 4M x 36

NONE

NONE

22MB

(1) 4M x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

NONE

24MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

NONE

26MB

(1) 512K x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 8M x 36

NONE

NONE

NONE

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

34MB

(1) 8M x 36

(1) 512K x 36

NONE

NONE

34MB

(1) 512K x 36

(1) 8M x 36

NONE

NONE

36MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

NONE

38MB

(1) 8M x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

40MB

(1) 8M x 36

(1) 2M x 36

NONE

NONE

40MB

(1) 2M x 36

(1) 8M x 36

NONE

NONE

48MB

(1) 8M x 36

(1) 2M x 36

(1) 2M x 36

NONE

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

52MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

66MB

(1) 512K x 36

(1) 8M x 36

(1) 8M x 36

NONE

72MB

(1) 2M x 36

(1) 8M x 36

(1) 8M x 36

NONE

96MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

NONE

98MB

(1) 512K x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

104MB

(1) 2M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

64KB

(4) 8K x 8

(4) 8K x 8

128KB

(4) 32K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

512KB

(4) 64K x 8

(4) 64K x 8

Note: Cache is factory installed by the manufacturer and is not configurable.

CACHE JUMPER CONFIGURATION

Size

J15

64KB

Open

128KB

pins 5 & 6 closed

256KB

pins 3 & 4, 5 & 6 closed

512KB

pins 1 & 2, 3 & 4, 5 & 6 closed

CACHE JUMPER CONFIGURATION

Setting

J21

Bank 0 installed

pins 1 & 2 closed

Banks 0 & 1 installed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

J5

80486SX

pins 2 & 3 closed

80486DX

pins 1 & 2, 3 & 4 closed

CPU TYPE CONFIGURATION

Type

J7

J23

AMD

Open

pins 1 & 2 closed

Cyrix

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

Intel

Open

pins 1 & 2 closed

CPU TYPE CONFIGURATION

Type

J1

80486SL-series

pins 1 & 2, 3 & 4 closed

P24T burst write

pins 5 & 6 closed

P24T write back

pins 7 & 8 closed

P24T write through

Open

CPU TYPE CONFIGURATION

Type

J18

80486SL-series

pins 2 & 4 closed

Cyrix

pins 4 & 6 closed

P24D write back

pins 3 & 5 closed

P24D write through

pins 1 & 3 closed

CPU TYPE CONFIGURATION

Type

J11

Any CPU type installed except for P24T

pins 1 & 3 closed

Pentium Overdrive

pins 3 & 5 closed

Bit 0 to stop clock

pins 2 & 4 closed

Bit 0 to stop clock

pins 4 & 6 closed

CPU SPEED CONFIGURATION

Speed

J12

J16

25MHz

pins 1 & 3, 2 & 4 closed

pins 5 & 6 closed

33MHz

pins 1 & 3, 4 & 6 closed

pins 1 & 2, 5 & 6 closed

40MHz

pins 2 & 4, 3 & 5 closed

pins 3 & 4, 5 & 6 closed

50iMHz

pins 1 & 3, 2 & 4 closed

pins 5 & 6 closed

50MHz

pins 4 & 6, 3 & 5 closed

pins 1 & 2, 3 & 4, 5 & 6 closed

66iMHz

pins 1 & 3, 4 & 6 closed

pins 1 & 2, 5 & 6 closed

75iMHz

pins 1 & 3, 2 & 4 closed

pins 5 & 6 closed

100iMHz

pins 1 & 3, 4 & 6 closed

pins 1 & 2, 5 & 6 closed

CPU SPEED CONFIGURATION (80486DX4)

Speed

J10

2x

pins 3 & 5 closed

2.5x

pins 1 & 3 closed

3x

Open

Cyrix CPU installed

pins 3 & 4 closed

IDE MODE CONFIGURATION

Speed

J13

>180ns

pins 1 & 3, 2 & 4 closed

>240ns

pins 2 & 4, 3 & 5 closed

>383ns

pins 1 & 3, 4 & 6 closed

>480ns

pins 3 & 5, 4 & 6 closed

DMA CONFIGURATION

DMA

J2

DMA 1

pins 3 & 4, 5 & 6 closed

DMA 3

pins 1 & 2, 7 & 8 closed