AST RESEARCH, INC.
BRAVO MS, MS-T, MS-L PENTIUM (RATTLER) (202653-XXX)
Processor | Pentium |
Processor Speed | 60/66/90/100MHz |
Chip Set | AST |
Max. Onboard DRAM | 128MB |
Cache | 512KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | Floppy drive interface, IDE interfaces (2), parallel port, serial ports (2), PS/2 mouse port, VGA feature connector, VGA port |
NPU Options | None |

CONNECTIONS | |||
Purpose | Location | Purpose | Location |
VGA port | CN1 | Floppy drive interface | J24 |
Parallel port | CN2 | Speaker | J27 |
Serial port 2 | CN3 | Chassis fan power | J28 |
Serial port 1 | CN4 | Front panel connector | J29 |
PS/2 mouse port | CN5 | Power LED & keylock | J32 |
VGA feature connector | J19 | IDE interface LED | J40 |
IDE interface 2 | J22 | Video memory upgrade slot | SL1 |
IDE interface 1 | J23 | Riser Card | SL2 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Factory configured - do not alter | E4 | Open |
» | Factory configured - do not alter | E5 | Open |
» | Factory configured - do not alter | E6 | Open |
» | Factory configured - do not alter | E8 | Open |
» | Monitor type select color | E9 | Closed |
Monitor type select monochrome | E9 | Open | |
» | System setup enabled | E10 | Closed |
System setup disabled | E10 | Open | |
» | On board video enabled | E11 | Closed |
On board video disabled | E11 | Open | |
» | Password enabled | E12 | Closed |
Password disabled | E12 | Open | |
» | Flash BIOS write protect enabled | E13 | Closed |
Flash BIOS write protect disabled | E13 | Open | |
» | CMOS memory normal operation | J26 | Closed |
CMOS memory clear | J26 | Open | |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
4MB | (1) 1M x 36 | NONE | NONE | NONE |
8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
8MB | (1) 2M x 36 | NONE | 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 |
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) 1M x 36 | NONE | NONE |
18MB | (1) 2M x 36 | (1) 2M x 36 | (1) 256K x 36 | (1) 256K x 36 |
20MB | (1) 2M x 36 | (1) 2M x 36 | (1) 1M x 36 | NONE |
24MB | (1) 2M x 36 | (1) 2M x 36 | (1) 1M x 36 | (1) 1M x 36 |
24MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 | NONE |
32MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 |
32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
32MB | (1) 8M x 36 | NONE | 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 |
40MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x 36 |
40MB | (1) 4M x 36 | (1) 4M x 36 | (1) 2M x 36 | NONE |
48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 2M x 36 | (1) 2M x 36 |
48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | NONE |
64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
64MB | (1) 8M x 36 | (1) 8M x 36 | NONE | NONE |
DRAM CONFIGURATION (CON’T) | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
66MB | (1) 8M x 36 | (1) 8M x 36 | (1) 256K x 36 | (1) 256K x 36 |
68MB | (1) 8M x 36 | (1) 8M x 36 | (1) 1M x 36 | NONE |
72MB | (1) 8M x 36 | (1) 8M x 36 | (1) 1M x 36 | (1) 1M x 36 |
72MB | (1) 8M x 36 | (1) 8M x 36 | (1) 2M x 36 | NONE |
80MB | (1) 8M x 36 | (1) 8M x 36 | (1) 2M x 36 | (1) 2M x 36 |
80MB | (1) 8M x 36 | (1) 8M x 36 | (1) 4M x 36 | NONE |
96MB | (1) 8M x 36 | (1) 8M x 36 | (1) 4M x 36 | (1) 4M x 36 |
96MB | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 | NONE |
128MB | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 |
CACHE CONFIGURATION | |
Size | Bank 0 |
512KB | (8) 64K x 8 |
Note: Cache is factory installed and is not configurable. | |
CPU SPEED CONFIGURATION | ||||
Speed | E1 | E2 | E3 | E7 |
60MHz | pins 1 & 2 closed | Open | Closed | Open |
66MHz | pins 1 & 2 closed | Closed | Closed | Open |
90MHz | pins 2 & 3 closed | Open | Closed | Open |
100MHz | pins 2 & 3 closed | Open | Closed | Closed |
Note: Use these settings with IMI415 installed at U7. | ||||
CPU SPEED CONFIGURATION | ||||
Speed | E1 | E2 | E3 | E7 |
60MHz | pins 1 & 2 closed | Open | Closed | Closed |
66MHz | pins 1 & 2 closed | Closed | Closed | Closed |
90MHz | pins 2 & 3 closed | Open | Closed | Closed |
100MHz | pins 2 & 3 closed | Open | Closed | Open |
Note: Use these settings with IMI470 installed at U7. | ||||