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

   CUPID Desktop EISA 486/25 & 486/33 (VER. 2)

   Model 202351-00X

   Processor        80486DX (on external CPU/Memory module)       
   Processor Speed  25/33MHz                                      
   Chip Set         AST                                           
   Max. Onboard     None (16MB on external CPU/Memory module)     
   DRAM             
   SRAM Cache       None                                          
   BIOS             AST                                           
   Dimensions       330mm x 218mm                                 
   I/O Options      32-bit external CPU/Memory module slot,       
                    32-bit external Memory module slot (2), bus   
                    mouse port, floppy drive interface, IDE       
                    interface, parallel port, serial port (2)     
   NPU Options      4167 (on external CPU/Memory module)          

<gopher://bitreich.org/I/th99/m/A-B/31214-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose           | Location |
   |------------------+----------+-------------------+----------|
   | Serial port 1    |   CN1    | Bus mouse port    |   J30    |
   | (COM1)           |          |                   |          |
   |------------------+----------+-------------------+----------|
   | Parallel port    |   CN2    | Front panel       |   P11    |
   |                  |          | switches & LEDs   |          |
   |------------------+----------+-------------------+----------|
   | EISA slave slot  |    ES    | External battery  |   P14    |
   |------------------+----------+-------------------+----------|
   | Speaker          |   J12    | Serial port 2     |   P18    |
   |                  |          | (COM2)            |          |
   |------------------+----------+-------------------+----------|
   | Floppy drive     |   J20    | 32-bit external   |    S1    |
   | interface (A:    |          | CPU/Memory module |          |
   | and B:)          |          |                   |          |
   |------------------+----------+-------------------+----------|
   | Third floppy     |   J21    | 32-bit external   | S2 & S3  |
   | drive interface  |          | Memory module     |          |
   |                  |          | slots             |          |
   |------------------+----------+-------------------+----------|
   | IDE interface    |   J22    | Optional ROM      |   U32    |
   |                  |          | (even)            |          |
   |------------------+----------+-------------------+----------|
   | IDE interface    |   J23    | Optional ROM      |   U33    |
   | LED              |          | (odd)             |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Factory configured - do not      |   E1   |    open    |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |   E2   |   closed   |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |   E3   |    open    |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Password check enabled           |   E4   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Password check disabled          |   E4   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |   E5   |    open    |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |   E6   |   closed   |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |   E7   | pins 2 & 3 |
   |   | alter                            |        |   closed   |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/m/A-B/31214-2.png>
   

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |             Function             |  Jumper   |  Position   |
   |----------------------------------+-----------+-------------|
   |>>    | Parity check enabled      |    E1     |   closed    |
   |------+---------------------------+-----------+-------------|
   |      | Parity check disabled     |    E1     |    open     |
   |------------------------------------------------------------|
   | Note:AST CPU/Memory module part number is 202397-001,      |
   | 202397-002, 202397-005, 202397-008,                        |
   |                                                            |
   | or 202397-009 for 25MHz systems or 202397-003, 202397-004, |
   | 202397-006, 202397-007,                                    |
   |                                                            |
   | 202397-010, or 202397-011 for 33MHz systems.               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |     Size      |        Bank 0        |       Bank 1        |
   |---------------+----------------------+---------------------|
   |      2MB      |      (2) 1M x 9      |        NONE         |
   |---------------+----------------------+---------------------|
   |      4MB      |      (2) 1M x 9      |     (2) 1M x 9      |
   |---------------+----------------------+---------------------|
   |      8MB      |      (2) 4M x 9      |        NONE         |
   |---------------+----------------------+---------------------|
   |     10MB      |      (2) 1M x 9      |     (2) 4M x 9      |
   |---------------+----------------------+---------------------|
   |     16MB      |      (2) 4M x 9      |     (2) 4M x 9      |
   |------------------------------------------------------------|
   | Notes:128KB of DRAM is reserved for System and VGA BIOS    |
   | shadowing and cannot be disabled.                          |
   |                                                            |
   | Up to two of the following memory boards may be installed  |
   | in addition to the CPU/Memory                              |
   |                                                            |
   | module: AST part numbers 202275-002, 202275-004,           |
   | 202275-006, 202387-001,                                    |
   |                                                            |
   | or 202387-005.                                             |
   +------------------------------------------------------------+