AST RESEARCH, INC.
BRAVO 5100 LC (501958-001), BRAVO SABRE LC (503415-101)
| Device Type | Mainboard |
| Processor | 80486SX/Pentium |
| Processor Speed | 33/100MHz |
| Chip Set | Unidentified |
| Video Chip Set | SIS |
| Maximum Onboard Memory | 4MB |
| Maximum Video Memory | 2MB |
| Cache | 256KB |
| BIOS | Unidentified |
| Dimensions | Unidentified |
| I/O Options | Floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, PS/2 keyboard port, serial interface, serial port, VGA feature connector, VGA port, riser slot, AT power connector |
CONNECTIONS |
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| Purpose | Location |
Purpose | Location |
| AT power connector | AT |
Reset switch - not used | CN9 |
| VGA port | CN1 | Floppy drive interface | FDD |
| PS/2 mouse or keyboard port | CN2 | IDE interface 1 | IDE1 |
| PS/2 keyboard or mouse port | CN3 | IDE interface 2 | IDE2 |
| Serial port | CN4 | VGA feature connector | J2 |
| Parallel port | CN5 | Serial interface | J10 |
| IDE interface LED | CN6 | CPU fan power | J17 |
| Speaker | CN7 | Riser slot | RISER |
| Power LED | CN8 | Unidentified | SL1 |
USER CONFIGURABLE SETTINGS |
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Function |
Label |
Position |
|
» |
Video interrupt disabled | JP1 | Open |
| Video interrupt enabled | JP1 | Closed | |
| CPU voltage at 3.3v - 3.4v | JP9 | Pins 2 & 3 closed |
|
|
CPU voltage at 3.4v - 3.6v | JP9 |
Pins 1 & 2 closed |
| Password enabled | JP14 | Closed | |
| Password disabled | JP14 | Open | |
SIMM CONFIGURATION |
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Size |
Bank 0 |
Bank 1 |
1MB |
(2) 256K x 9 |
None |
2MB |
(2) 256K x 9 |
(2) 256K x 9 |
4MB |
(2) 1M x 9 |
None |
CPU SPEED SELECTION |
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Speed |
Clock Speed | BF0 | BF1 | JP3 | JP4 | JP5 |
100MHz |
66MHz | 1 & 2 | Open | Open | Open | Closed |
133MHz |
66MHz | 2 & 3 | Open | Open | Open | Closed |
150MHz |
60MHz | 2 & 3 | Closed | Open | Closed | Open |
166MHz |
66MHz | 2 & 3 | Closed | Open | Open | Closed |
| Note: Pins designated should be in the closed position. | ||||||