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. | ||