AST RESEARCH, INC.
BRAVO 286/386SX SYSTEM BOARD (202382-001, 002, 005)
|
Processor |
80386SX |
|
Processor Speed |
20MHz |
|
Chip Set |
AST |
|
Max. Onboard DRAM |
16MB |
|
Cache |
None |
|
BIOS |
AST |
|
Dimensions |
355mm x 251mm |
|
I/O Options |
16-bit external CPU/NPU card slot, bus mouse port, floppy interface, IDE interface, parallel port, serial ports (2), VGA port |
|
NPU Options |
80387SX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Bus mouse port |
J12 |
Floppy drive interface |
J24 |
|
Parallel port |
J13 |
External battery |
J26 |
|
Primary serial port |
J14 |
Speaker |
J27 |
|
VGA port |
J18 |
Fan connector |
J28 |
|
VGA pass-thru |
J19 |
Front panel switch/display |
J29 |
|
Secondary serial port header |
J20 |
16-bit external CPU/NPU card |
J34 |
|
IDE interface |
J22 |
Drive active LED connector |
J35 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Switch |
Position | |
|
VGA interface enabled |
SW1/1 |
On | |
|
VGA interface disabled |
SW1/1 |
Off | |
|
Password check normal operation |
SW1/2 |
Off | |
|
Password clear |
SW1/2 |
On | |
|
Factory configured - do not alter |
SW1/3 |
Off | |
|
Factory configured - do not alter |
SW1/4 |
Off | |
|
Factory configured - do not alter |
SW1/5 |
On | |
|
Factory configured - do not alter |
SW1/6 |
On | |
|
PS/2 mode enabled (AT mode disabled) |
SW1/7 |
On | |
|
PS/2 mode disabled (AT mode enabled) |
SW1/7 |
Off | |
|
Monitor type select fixed frequency |
SW1/8 |
Off | |
|
Monitor type select multi-frequency |
SW1/8 |
On | |
|
Factory configured - do not alter |
SW1/9 |
Off | |
|
Factory configured - do not alter |
SW1/10 |
Off | |
|
DRAM CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
NONE |
|
1.5MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
(2) 1M x 9 |
NONE |
NONE |
|
3MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 1M x 9 |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
NONE |
|
4.5MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 256K x 9 |
|
6MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
8MB |
(2) 4M x 9 |
NONE |
NONE |
|
9MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 4M x 9 |
|
12MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 4M x 9 |
|
16MB |
(2) 4M x 9 |
(2) 4M x 9 |
NONE |