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# AST RESEARCH, INC.
BRAVO 486/25
Processor 80486DX
Processor Speed 25MHz
Chip Set AST
Max. Onboard 16MB
DRAM
Cache None
BIOS AST
Dimensions 355mm x 251mm
I/O Options Bus mouse port, floppy interface, IDE
interface, parallel port, serial ports (2),
VGA port
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Bus mouse port | J12 | IDE interface | J22 |
|------------------+----------+-------------------+----------|
| Parallel port | J13 | Floppy drive | J24 |
| | | interface | |
|------------------+----------+-------------------+----------|
| Primary serial | J14 | External battery | J26 |
| port | | | |
|------------------+----------+-------------------+----------|
| VGA port | J18 | Speaker | J27 |
|------------------+----------+-------------------+----------|
| VGA pass-through | J19 | Front panel | J29 |
| | | switch/display | |
|------------------+----------+-------------------+----------|
| Secondary serial | J20 | External HD card | J40 |
| port header | | access LED | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|---------------------------------+---------------+----------|
| » | Parity check enabled | E1 | Closed |
|---+-----------------------------+---------------+----------|
| | Parity check disabled | E1 | Open |
|---+-----------------------------+---------------+----------|
| » | VGA interface enabled | SW1/1 | On |
|---+-----------------------------+---------------+----------|
| | VGA interface disabled | SW1/1 | Off |
|---+-----------------------------+---------------+----------|
| » | Password check normal | SW1/2 | Off |
| | operation | | |
|---+-----------------------------+---------------+----------|
| | Password clear | SW1/2 | On |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | SW1/3 | Off |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | SW1/4 | Off |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | SW1/5 | On |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | SW1/6 | On |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | PS/2 mode enabled (AT mode | SW1/7 | On |
| | disabled) | | |
|---+-----------------------------+---------------+----------|
| | PS/2 mode disabled (AT mode | SW1/7 | Off |
| | enabled) | | |
|---+-----------------------------+---------------+----------|
| » | Monitor type select fixed | SW1/8 | Off |
| | frequency | | |
|---+-----------------------------+---------------+----------|
| | Monitor type select multi | SW1/8 | On |
| | frequency | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 2MB | (2) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 1M x 9 | (2) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 10MB | (2) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 10MB | (4) 4M x 9 | (2) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+