BRAVO LC (94) (202594-XXX) Motherboard Settings and Configuration

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.

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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

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

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.