AST RESEARCH, INC.
==================

   BRAVO LP (202536-0XX)

   Processor    80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium 
                Overdrive                                         
   Processor    25/33/50(internal)/66(internal)MHz                
   Speed        
   Chip Set     AST                                               
   Max. Onboard 64MB                                              
   DRAM         
   Cache        64KB (with external cache card)                   
   BIOS         AST                                               
   Dimensions   330mm x 218mm                                     
   I/O Options  Floppy drive interface, IDE interface, parallel   
                port, PS/2 mouse port, serial ports (2), VGA      
                feature connector, VGA port                       
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/A-B/31979-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | Front panel         |    J2    | IDE interface  |   J22    |
   | connector           |          |                |          |
   |---------------------+----------+----------------+----------|
   | PS/2 mouse port     |   J12    | Floppy drive   |   J24    |
   |                     |          | interface      |          |
   |---------------------+----------+----------------+----------|
   | Parallel port       |   J13    | Speaker        |   J27    |
   |---------------------+----------+----------------+----------|
   | Serial port 1       |   J14    | Chassis fan    |   J28    |
   |                     |          | power          |          |
   |---------------------+----------+----------------+----------|
   | Personality module  |   J15,   | IDE interface  |   J40    |
   | connectors          | J16, J46 | LED            |          |
   |---------------------+----------+----------------+----------|
   | VGA port            |   J18    | Cache module   |  J50 -   |
   |                     |          | connectors     |   J53    |
   |---------------------+----------+----------------+----------|
   | VGA feature         |   J19    | Riser Card     |   SL1    |
   | connector           |          |                |          |
   |---------------------+----------+----------------+----------|
   | Serial port 2       |   J20    |                |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |>> | CMOS memory normal        |      E1       |    Open    |
   |   | operation                 |               |            |
   |---+---------------------------+---------------+------------|
   |   | CMOS memory clear         |      E1       |   Closed   |
   |---+---------------------------+---------------+------------|
   |>> | Parallel port IRQ select  |      E7       | pins 1 & 2 |
   |   | IRQ7                      |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Parallel port IRQ select  |      E7       | pins 2 & 3 |
   |   | IRQ5                      |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      E9       |    Open    |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     E800      | pins 1 & 2 |
   |   | not alter                 |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     E801      | pins 2 & 3 |
   |   | not alter                 |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Power management enabled  |     E802      | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Power management disabled |     E802      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     E803      | pins 1 & 2 |
   |   | not alter                 |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     E804      | pins 1 & 2 |
   |   | not alter                 |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | On board video enabled    |     SW1/1     |    Off     |
   |---+---------------------------+---------------+------------|
   |   | On board video disabled   |     SW1/1     |     On     |
   |---+---------------------------+---------------+------------|
   |>> | POST type select normal   |     SW1/2     |    Off     |
   |---+---------------------------+---------------+------------|
   |   | POST type select loop     |     SW1/2     |     On     |
   |---+---------------------------+---------------+------------|
   |>> | Boot type select normal   |     SW1/3     |    Off     |
   |---+---------------------------+---------------+------------|
   |   | Boot type select flash    |     SW1/3     |     On     |
   |   | BIOS update               |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Password enabled          |     SW1/4     |    Off     |
   |---+---------------------------+---------------+------------|
   |   | Password disabled         |     SW1/4     |     On     |
   |---+---------------------------+---------------+------------|
   |>> | Monitor type select color |     SW1/5     |     On     |
   |---+---------------------------+---------------+------------|
   |   | Monitor type select       |     SW1/5     |    Off     |
   |   | monochrome                |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     SW1/6     |    Off     |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     SW1/7     |    Off     |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | System setup type select  |     SW1/8     |    Off     |
   |   | allow access              |               |            |
   |---+---------------------------+---------------+------------|
   |   | System setup type select  |     SW1/8     |     On     |
   |   | deny access               |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     SW1/9     |    Off     |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |    SW1/10     |    Off     |
   |   | not alter                 |               |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
   |------+-------------+-------------+------------+------------|
   | 1MB  | (1) 256K x  |    NONE     |    NONE    |    NONE    |
   |      |     36      |             |            |            |
   |------+-------------+-------------+------------+------------|
   | 2MB  | (1) 256K x  | (1) 256K x  |    NONE    |    NONE    |
   |      |     36      |     36      |            |            |
   |------+-------------+-------------+------------+------------|
   | 3MB  | (1) 256K x  | (1) 256K x  | (1) 256K x |    NONE    |
   |      |     36      |     36      |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 4MB  | (1) 256K x  | (1) 256K x  | (1) 256K x | (1) 256K x |
   |      |     36      |     36      |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 4MB  | (1) 1M x 36 |    NONE     |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 5MB  | (1) 1M x 36 | (1) 256K x  |    NONE    |    NONE    |
   |      |             |     36      |            |            |
   |------+-------------+-------------+------------+------------|
   | 6MB  | (1) 1M x 36 | (1) 256K x  | (1) 256K x |    NONE    |
   |      |             |     36      |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 7MB  | (1) 1M x 36 | (1) 256K x  | (1) 256K x | (1) 256K x |
   |      |             |     36      |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 8MB  | (1) 1M x 36 | (1) 1M x 36 |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 9MB  | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 10MB | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x | (1) 256K x |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 12MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 13MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  | (1) 256K x |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 16MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
   |      |             |             |     36     |     36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM CONFIGURATION (CON'T)                 |
   |------------------------------------------------------------|
   | 16MB | (1) 4M x 36 |    NONE     |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 17MB | (1) 4M x 36 | (1) 256K x  |    NONE    |    NONE    |
   |      |             |     36      |            |            |
   |------+-------------+-------------+------------+------------|
   | 18MB | (1) 4M x 36 | (1) 256K x  | (1) 256K x |    NONE    |
   |      |             |     36      |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 19MB | (1) 4M x 36 | (1) 256K x  | (1) 256K x | (1) 256K x |
   |      |             |     36      |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 20MB | (1) 4M x 36 | (1) 1M x 36 |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 21MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 22MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x | (1) 256K x |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 24MB | (1) 4M x 36 | (1) 1M x 36 |  (1) 1M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 25MB | (1) 4M x 36 | (1) 1M x 36 |  (1) 1M x  | (1) 256K x |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 28MB | (1) 4M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 32MB | (1) 4M x 36 | (1) 4M x 36 |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 33MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 34MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x | (1) 256K x |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 36MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 1M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 37MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 1M x  | (1) 256K x |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 40MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 1M x  |  (1) 1M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 48MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 49MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  | (1) 256K x |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 52MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 1M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 64MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
   |      |             |             |     36     |     36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CPU UPGRADE CONFIGURATION                  |
   |------------------------------------------------------------|
   |       Type       |   E2    |  E3   |  E4   |  E5   |  E6   |
   |------------------+---------+-------+-------+-------+-------|
   |       None       |   N/A   |  N/A  |  N/A  |  N/A  | 2 & 3 |
   |------------------+---------+-------+-------+-------+-------|
   |     80486SX      |  Open   | Open  | 2 & 3 | 2 & 3 | 1 & 2 |
   |------------------+---------+-------+-------+-------+-------|
   |     80487SX      | Closed  | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 |
   |------------------+---------+-------+-------+-------+-------|
   |   80486DX/DX2    | Closed  | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 |
   |------------------+---------+-------+-------+-------+-------|
   | Overdrive (ODPR) | Closed  | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 |
   |------------------+---------+-------+-------+-------+-------|
   | Overdrive (ODP)  | Closed  | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 |
   |------------------+---------+-------+-------+-------+-------|
   | Overdrive (P24T) | Closed  | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |            Speed             |             E8              |
   |------------------------------+-----------------------------|
   |            25MHz             |            Open             |
   |------------------------------+-----------------------------|
   |            33MHz             |           Closed            |
   |------------------------------+-----------------------------|
   |            50iMHz            |            Open             |
   |------------------------------+-----------------------------|
   |            66iMHz            |           Closed            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 VIDEO MEMORY CONFIGURATION                 |
   |------------------------------------------------------------|
   |  Size   |     Bank 0     |     Bank 1     |     Bank 2     |
   |---------+----------------+----------------+----------------|
   |  512KB  | (1) 256K x 16  |      NONE      |      NONE      |
   |---------+----------------+----------------+----------------|
   |   1MB   | (1) 256K x 16  | (1) 256K x 16  |      NONE      |
   |---------+----------------+----------------+----------------|
   |   2MB   | (1) 256K x 16  | (1) 256K x 16  | (2) 256K x 16  |
   |------------------------------------------------------------|
   | Note: Bank 0 is factory installed and is not configurable. |
   +------------------------------------------------------------+