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BRAVO LC (94) (202594-XXX)

AST RESEARCH, INC.

BRAVO LC (94) (202594-XXX)

Processor

80486SX/80486DX/ODP486SX/Pentium Overdrive

Processor Speed

25/33MHz

Chip Set

AST

Max. Onboard DRAM

64MB

Cache

64/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slot, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA port, VGA feature connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

J12

IDE interface

J22

Parallel port

J13

Floppy drive interface

J24

Serial port 1

J14

Chassis fan power

J28

VGA port

J18

Front panel LED connector

J29

VGA feature connector

J19

32-bit VESA Local bus slot

SL1

Serial port 2

J20

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

VESA cache write through enabled

E1

pins 1 & 2 closed

 

VESA cache write back enabled

E1

pins 2 & 3 closed

Parallel port IRQ select IRQ7

E2

pins 1 & 2 closed

 

Parallel port IRQ select IRQ5

E2

pins 2 & 3 closed

On board video enabled

E7

Closed

 

On board video disabled

E7

Open

Monitor type select color

E8

Closed

 

Monitor type select monochrome

E8

Open

Factory configured - do not alter

E9

pins 1 & 2 closed

CMOS memory normal operation

E10

Closed

 

CMOS memory clear

E10

Open

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

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) 1M x 36

NONE

NONE

NONE

5MB

(1) 1M x 36

(1) 256K x 36

NONE

NONE

6MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

NONE

7MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

9MB

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

NONE

10MB

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

13MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 4M x 36

NONE

NONE

NONE

17MB

(1) 4M x 36

(1) 256K x 36

NONE

NONE

18MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

NONE

19MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

20MB

(1) 4M x 36

(1) 1M x 36

NONE

NONE

21MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

NONE

22MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

NONE

25MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

33MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

NONE

34MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

36MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

NONE

37MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

40MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

49MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

52MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

CACHE CONFIGURATION

Size

Bank 0

TAG

64KB

(8) 8K x 8

(1) 8K x 8

256KB

(8) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

E12

E14

64KB

Open

Open

256KB

Closed

Closed

CPU TYPE CONFIGURATION

Type

E3

E4

E5

E6

E13

80486SX PQFP

2 & 3

2 & 3

2 & 3

1 & 2

Open

80486SX PGA

1 & 2

1 & 2

1 & 2

1 & 2

Closed

80486DX

2 & 3

2 & 3

2 & 3

1 & 2

Closed

ODP80486SX

2 & 3

2 & 3

2 & 3

1 & 2

Closed

Pentium Overdrive

2 & 3

1 & 2

2 & 3

1 & 2

Closed

Note: Jumper E6 set with pins 1 & 2 closed enables write through cache, pins 2 & 3 closed enabled write back cache. If write back is enabled, and pins 2 & 3 closed on jumper E1, write back mode is enabled for SL1.

CPU SPEED CONFIGURATION

Speed

E15

25MHz

Closed

33MHz

Open

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

512KB

(4) 256K x 4

NONE

1MB

(4) 256K x 4

(4) 256K x 4

Note: Bank O is factory installed and is not configurable.