AST RESEARCH, INC.
Bravo LC 486 (202480-XXX)
Processor | 80486SX |
Processor Speed | 25MHz |
Chip Set | AST |
Max. Onboard DRAM | 64MB |
Cache | None |
BIOS | AST |
Dimensions | 254mm x 338mm |
I/O Options | Bus mouse port, CPU/Cache upgrade module, floppy drive interface, IDE interface, LAN module, parallel port, serial port (2), VGA port |
NPU Options | None |

CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Serial port 2 (COM2) | J12 | Floppy drive interface | J24 |
Parallel port | J13 | External speaker | J27 |
Bus mouse port | J14 | Fan power | J28 |
LAN module | J15 & J16 | Front panel switches & LEDs | J29 |
Serial port 1 (COM1) | J17 | Feature connector | J46 |
VGA port | J18 | CPU/Cache upgrade module | J50, J51, J52, J53 |
VGA pass-through | J19 | IDE interface LED | J100 |
IDE interface | J22 | ||
USER CONFIGURABLE SETTINGS | |||
Function | Jumper/Switch | Position | |
| » | Factory configured - do not alter | E1 | open |
| » | Factory configured - do not alter | E2 | pins 2 & 3 closed |
| » | Parallel port interrupt select IRQ7 | E5 | pins 2 & 3 closed |
Parallel port interrupt select IRQ5 | E5 | pins 1 & 2 closed | |
| » | CMOS memory normal operation | E6 | open |
CMOS memory clear | E6 | closed | |
| » | VGA port enabled | SW1/switch 1 | closed |
VGA port disabled | SW1/switch 1 | open | |
| » | Password check enabled | SW1/switch 2 | open |
Password check disabled | SW1/switch 2 | closed | |
| » | Factory configured - do not alter | SW1/switch 3 | open |
| » | Factory configured - do not alter | SW1/switch 4 | open |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
2MB | (1) 256K x 36 | (1) 256K x 36 | NONE | 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 |
8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
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 |
32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
VRAM CONFIGURATION | |
Size | VRAM |
512KB | (4) 44256 |