BRAVO LC (LC2) (202560-XXX)

AST RESEARCH, INC.

BRAVO LC (LC2) (202560-XXX)

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium Overdrive

Processor Speed

25/33/50(internal)/66(internal)MHz

Chip Set

AST

Max. Onboard DRAM

64MB

Cache

64/256KB

BIOS

AST

Dimensions

330mm x 218mm

I/O Options

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

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

J12

Serial port 2

J20

Parallel port

J13

IDE interface

J22

Serial port 1

J14

Floppy drive interface

J24

VGA port

J18

Chassis fan power

J28

VGA feature connector

J19

Front panel connector

J29

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select color

E4

Closed

Monitor type select monochrome

E4

Open

»

Video adapter enabled

E5

Closed

Video adapter disabled

E5

Open

»

CMOS memory normal operation

E6

Closed

CMOS memory clear

E6

Open

»

Parallel port IRQ select IRQ7

E12

pins 1 & 2 closed

Parallel port IRQ select IRQ5

E12

pins 2 & 3 closed

»

Factory configured - do not alter

E17

pins 1 & 2 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

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

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

DRAM CONFIGURATION (CON’T)

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

E1

E2

E3

64KB

Open

Open

Open

256KB

Closed

Closed

Closed

CPU UPGRADE CONFIGURATION

Type

E11

E13

E14

E15

E16

None

Open

Open

1 & 2

1 & 2

1 & 2

80846SX

Closed

Open

1 & 2

1 & 2

1 & 2

80487SX

Closed

Closed

1 & 2

1 & 2

2 & 3

80486DX/DX2

Closed

Closed

2 & 3

1 & 2

2 & 3

Overdrive (ODPR)

Closed

Closed

2 & 3

1 & 2

2 & 3

Overdrive (ODP)

Closed

Closed

1 & 2

1 & 2

2 & 3

Overdrive (DX2)

Closed

Closed

1 & 2

2 & 3

2 & 3

CPU SPEED CONFIGURATION

Speed

E9

E10

25MHz

Closed

Closed

33MHz

Open

Closed

50iMHz

Closed

Closed

66iMHz

Open

Closed

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

512KB

(4) 256KB x 4

NONE

1MB

(4) 256KB x 4

(4) 256KB x 4

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

Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium Overdrive
Processor Speed	25/33/50(internal)/66(internal)MHz
Chip Set	AST
Max. Onboard DRAM	64MB
Cache	64/256KB
BIOS	AST
Dimensions	330mm x 218mm
I/O Options	Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
PS/2 mouse port	J12	Serial port 2	J20
Parallel port	J13	IDE interface	J22
Serial port 1	J14	Floppy drive interface	J24
VGA port	J18	Chassis fan power	J28
VGA feature connector	J19	Front panel connector	J29

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select color	E4	Closed
	Monitor type select monochrome	E4	Open
»	Video adapter enabled	E5	Closed
	Video adapter disabled	E5	Open
»	CMOS memory normal operation	E6	Closed
	CMOS memory clear	E6	Open
»	Parallel port IRQ select IRQ7	E12	pins 1 & 2 closed
	Parallel port IRQ select IRQ5	E12	pins 2 & 3 closed
»	Factory configured - do not alter	E17	pins 1 & 2 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
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
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

DRAM CONFIGURATION (CON’T)
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	E1	E2	E3
64KB	Open	Open	Open
256KB	Closed	Closed	Closed

CPU UPGRADE CONFIGURATION
Type	E11	E13	E14	E15	E16
None	Open	Open	1 & 2	1 & 2	1 & 2
80846SX	Closed	Open	1 & 2	1 & 2	1 & 2
80487SX	Closed	Closed	1 & 2	1 & 2	2 & 3
80486DX/DX2	Closed	Closed	2 & 3	1 & 2	2 & 3
Overdrive (ODPR)	Closed	Closed	2 & 3	1 & 2	2 & 3
Overdrive (ODP)	Closed	Closed	1 & 2	1 & 2	2 & 3
Overdrive (DX2)	Closed	Closed	1 & 2	2 & 3	2 & 3

CPU SPEED CONFIGURATION
Speed	E9	E10
25MHz	Closed	Closed
33MHz	Open	Closed
50iMHz	Closed	Closed
66iMHz	Open	Closed

VIDEO MEMORY CONFIGURATION
Size	Bank 0	Bank 1
512KB	(4) 256KB x 4	NONE
1MB	(4) 256KB x 4	(4) 256KB x 4
Note: Bank O is factory installed and is not configurable.