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# AST RESEARCH, INC.
Bravo/286 (202286-002, 202354-001)
Processor 80286
Processor Speed 8MHz
Chip Set AST
Max. Onboard 4MB
DRAM
SRAM Cache None
BIOS AST
Dimensions 286mm x 190mm
I/O Options Floppy drive interface, IDE interface,
parallel port, serial port
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------------+----------+---------------+----------|
| Parallel port | CN1 | Power LED | J10 |
|----------------------+----------+---------------+----------|
| Serial port 1 (COM1) | CN2 | IDE interface | J11 |
| | | LED | |
|----------------------+----------+---------------+----------|
| IDE interface | J8 | Riser card | S1 |
|----------------------+----------+---------------+----------|
| Floppy drive | J9 | Reset switch | SW1 |
| interface | | | |
|------------------------------------------------------------|
| Note:Connector J11 is only present on part number |
| 202354-001. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+----------+------------|
| » | Factory configured - do not | E1 | open |
| | alter | | |
|----+-------------------------------+----------+------------|
| » | Factory configured - do not | E2 | open |
| | alter | | |
|----+-------------------------------+----------+------------|
| » | Monitor type select color | SW2 | pins 1 & 2 |
| | | | closed |
|----+-------------------------------+----------+------------|
| | Monitor type select | SW2 | pins 2 & 3 |
| | monochrome | | closed |
|----+-------------------------------+----------+------------|
| » | Factory configured - do not | SW3 | pins 1 & 2 |
| | alter | | closed |
|------------------------------------------------------------|
| Note:On some board revisions SW2 is a two position switch |
| with the settings |
| |
| marked "Color" and "Mono". SW2 is shown here as a three |
| pin jumper with unverified settings. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (2) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 640KB | (2) 256K x 9 | (2) 64K x 9 |
|------------------+--------------------+--------------------|
| 1MB | (2) 256K x 9 | (2) 256K x 9 |
|------------------+--------------------+--------------------|
| 2MB | (2) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 1M x 9 | (2) 1M x 9 |
+------------------------------------------------------------+