PEAKTRON COMPUTER, INC.
=======================

   PVGA 2/4/8-DRAM (VERSION 1)

   Category                     Video                             
   Video Types Supported        CGA/EGA/Monochrome/VGA/XVGA       
   Video Processor              TVGA 8900                         
   Highest Resolution Supported 1024 x768                         
   Data Bus Type                16-bit ISA                        
   Memory Type                  DRAM                              
   Maximum Onboard Memory       1024KB                            

<gopher://bitreich.org/I/th99/v/P-R/50073-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |        Purpose         | Location |   Purpose   | Location |
   |------------------------+----------+-------------+----------|
   | 15-pin analog video    |   CN1    | VGA feature |   CN3    |
   | port                   |          | connector   |          |
   |------------------------+----------+-------------+----------|
   | 9-pin TTL video port   |   CN2    |             |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                FACTORY CONFIGURED SETTINGS                 |
   |------------------------------------------------------------|
   |           Switch            |           Position           |
   |-----------------------------+------------------------------|
   |            SW1/4            |              On              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  MONITOR TYPE SELECTION                    |
   |------------------------------------------------------------|
   |          Type          |      SW1/1      |      SW1/2      |
   |------------------------+-----------------+-----------------|
   |>> |      VGA mode      |       On        |       On        |
   |---+--------------------+-----------------+-----------------|
   |   |      EGA mode      |       Off       |       On        |
   |---+--------------------+-----------------+-----------------|
   |   |      CGA mode      |       On        |       Off       |
   |---+--------------------+-----------------+-----------------|
   |   | MDA/Hercules mode  |       Off       |       Off       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    SCAN RATE SELECTION                     |
   |------------------------------------------------------------|
   |               Rate                |         SW1/3          |
   |-----------------------------------+------------------------|
   |>> |           >  48KHz            |           On           |
   |---+-------------------------------+------------------------|
   |   |         < 48 - 49KHz          |          Off           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 ADDRESS DECODE SELECTION                   |
   |------------------------------------------------------------|
   |             Setting             |          SW1/5           |
   |---------------------------------+--------------------------|
   |>>    |           Fast           |           Off            |
   |------+--------------------------+--------------------------|
   |      |           Slow           |            On            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 VIDEO INTERRUPT SELECTION                  |
   |------------------------------------------------------------|
   |          IRQ 2/9           |              J1               |
   |----------------------------+-------------------------------|
   |>> |        Disabled        |       Pins 2 & 3 closed       |
   |---+------------------------+-------------------------------|
   |   |        Enabled         |       Pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BUS DATA PATH SELECTION                   |
   |------------------------------------------------------------|
   |               BUS                |          SW1/6          |
   |----------------------------------+-------------------------|
   |>>   |           16-bit           |           Off           |
   |-----+----------------------------+-------------------------|
   |     |           8-bit            |           On            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    BUS SIZE DETECTION                      |
   |------------------------------------------------------------|
   |            Setting             |            J2             |
   |--------------------------------+---------------------------|
   |>> |         Autodetect         |     Pins 2 & 3 closed     |
   |---+----------------------------+---------------------------|
   |   |     Standard interface     |     Pins 1 & 2 closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   DRAM CLOCK SELECTION                     |
   |------------------------------------------------------------|
   |            Setting            |             J4             |
   |-------------------------------+----------------------------|
   |>> |      40mhz (2 DRAM)       |     Pins 2 & 3 closed      |
   |---+---------------------------+----------------------------|
   |   |     48mhz (4/8 DRAM)      |     Pins 1 & 2 closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    DRAM CONFIGURATION                      |
   |------------------------------------------------------------|
   |  Size   |   Bank 0   |   Bank 1   |           J3           |
   |---------+------------+------------+------------------------|
   |  256KB  | (2) 44256  |    NONE    |   Pins 1 & 2, 4 & 5    |
   |         |            |            |         closed         |
   |---------+------------+------------+------------------------|
   |  512KB  | (4) 44256  |    NONE    |   Pins 1 & 4, 2 & 5    |
   |         |            |            |         closed         |
   |---------+------------+------------+------------------------|
   | 1024KB  | (4) 44256  | (4) 44256  |   Pins 2 & 3, 5 & 6    |
   |         |            |            |         closed         |
   |------------------------------------------------------------|
   | Note: The exact locations of banks 0 and 1 are             |
   | unidentified.                                              |
   +------------------------------------------------------------+