AST RESEARCH, INC.

BRAVO LC (KING P) P/75 (202766-101)

Processor

CX487SX/80486SX/CX486DX/80486DX/CX486DX2/80486DX2/80486DX4/ Pentium Overdrive/CX5X86

Processor Speed

20/25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz

Chip Set

Unidentified

Max. Onboard DRAM

128MB

Cache

128/256KB

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

Floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), 8514 video pass through connector, VGA port, riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

CN2

Turbo LED (not used)

J10

Serial port

CN3

Turbo switch (not used)

J12 pins 2 & 3

Serial port

CN4

Control console power LED

J14

Parallel port

CN5

Reset switch (not used)

J15

VGA port

CN6

8514 video pass through connector

J16

IDE interface 1

J3

Speaker

J18 pins 1 & 2

Floppy drive interface

J5

Control console hard drive LED

JP15

IDE interface 2

J7

Riser slot

SL1

Green PC connector (not used)

J9

   

Note: The locations of J9 & J10 are unidentified.

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Factory configured - do not alter

J11

N/A

»

Password enabled

JP2

Closed

 

Password disabled

JP2

Open

»

On board video enabled

JP29

Closed

 

On board video disabled

JP29

Open

»

Monitor type select color

JP30

Closed

 

Monitor type select monochrome

JP30

Open

»

Flash BIOS normal operation

JP31

Closed

 

Flash BIOS force update at boot

JP31

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(1) 1M x 32

NONE

NONE

NONE

8MB

(1) 2M x 32

NONE

NONE

NONE

8MB

(1) 1M x 32

(1) 1M x 32

NONE

NONE

9MB

(1) 1M x 32

(1) 1M x 32

(1) 256K x 32

NONE

10MB

(1) 1M x 32

(1) 1M x 32

(1) 256K x 32

(1) 256K x 32

12MB

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

NONE

16MB

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

16MB

(1) 4M x 32

NONE

NONE

NONE

17MB

(1) 2M x 32

(1) 2M x 32

(1) 256K x 32

NONE

18MB

(1) 2M x 32

(1) 2M x 32

(1) 256K x 32

(1) 256K x 32

20MB

(1) 2M x 32

(1) 2M x 32

(1) 1M x 32

NONE

24MB

(1) 2M x 32

(1) 2M x 32

(1) 1M x 32

(1) 1M x 32

24MB

(1) 2M x 32

(1) 2M x 32

(1) 2M x 32

NONE

32MB

(1) 2M x 32

(1) 2M x 32

(1) 2M x 32

(1) 2M x 32

32MB

(1) 8M x 32

NONE

NONE

NONE

32MB

(1) 4M x 32

(1) 4M x 32

NONE

NONE

33MB

(1) 4M x 32

(1) 4M x 32

(1) 256K x 32

NONE

34MB

(1) 4M x 32

(1) 4M x 32

(1) 256K x 32

(1) 256K x 32

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

36MB

(1) 4M x 32

(1) 4M x 32

(1) 1M x 32

NONE

40MB

(1) 4M x 32

(1) 4M x 32

(1) 1M x 32

(1) 1M x 32

40MB

(1) 4M x 32

(1) 4M x 32

(1) 2M x 32

NONE

48MB

(1) 4M x 32

(1) 4M x 32

(1) 2M x 32

(1) 2M x 32

48MB

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

NONE

64MB

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

64MB

(1) 8M x 32

(1) 8M x 32

NONE

NONE

66MB

(1) 8M x 32

(1) 8M x 32

(1) 256K x 32

(1) 256K x 32

68MB

(1) 8M x 32

(1) 8M x 32

(1) 1M x 32

NONE

72MB

(1) 8M x 32

(1) 8M x 32

(1) 1M x 32

(1) 1M x 32

72MB

(1) 8M x 32

(1) 8M x 32

(1) 2M x 32

NONE

80MB

(1) 8M x 32

(1) 8M x 32

(1) 2M x 32

(1) 2M x 32

80MB

(1) 8M x 32

(1) 8M x 32

(1) 4M x 32

NONE

96MB

(1) 8M x 32

(1) 8M x 32

(1) 4M x 32

(1) 4M x 32

96MB

(1) 8M x 32

(1) 8M x 32

(1) 8M x 32

NONE

128MB

(1) 8M x 32

(1) 8M x 32

(1) 8M x 32

(1) 8M x 32

CACHE CONFIGURATION

Size

Bank 0

TAG

128KB

(4) 32K x 8

(1) 8K x 8

256KB

(4) 64K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP16

JP17

128KB

pins 1 & 2 closed

pins 1 & 2 closed

256KB

pins 2 & 3 closed

pins 1 & 2 closed

CPU TYPE CONFIGURATION

Type

JP3

JP4

JP5

JP6

JP7

Cyrix 486

Closed

Open

Open

Open

Open

Intel 486

Open

Closed

Closed

Closed

Open

Cyrix 5x86

Open

Closed

Closed

Closed

Open

CPU TYPE CONFIGURATION (CON’T)

Type

JP8

JP9

JP20

JP21

JP22

JP23

Cyrix 486

Open

Closed

Closed

Open

Closed

Open

Intel 486

Closed

Open

Open

Open

Open

Open

Cyrix 5x86

Closed

Open

Open

Open

Open

Open

CPU TYPE CONFIGURATION

Type

JP11

SX

pins 2 & 3 closed

DX

pins 1 & 2 closed

CPU SPEED CONFIGURATION

Speed

JP1

JP19

20MHz

pins 1 & 2 closed

pins 1 & 2 closed

25MHz

pins 1 & 2 closed

pins 3 & 4 closed

33MHz

pins 1 & 2 closed

pins 5 & 6 closed

50iMHz

pins 1 & 2 closed

pins 3 & 4 closed

66iMHz

pins 1 & 2 closed

pins 5 & 6 closed

75iMHz

pins 1 & 2 closed

pins 3 & 4 closed

100iMHz

pins 1 & 2 closed

pins 5 & 6 closed

CPU VOLTAGE CONFIGURATION

Voltage

V1

V2

V3

V4

3.45v

Open

Open

Open

Open

5v

Closed

Closed

Closed

Closed

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

1MB

(2) 512K x 8

NONE

2MB

(2) 512K x 8

(2) 512K x 8

MISCELLANEOUS TECHNICAL NOTE

Note: The location of pin 1 on the jumpers is unidentified.