UNIDENTIFIED
============

   TVGA 8902/4/8-DRAM

   Card Type                    Video Card                        
   Video Chip Set               Unidentified                      
   Maximum Video Memory         1MB DRAM                          
   Video Types Supported        VGA                               
   Highest Resolution Supported 1024 x 768                        
   Data Bus                     16-bit ISA                        

<gopher://bitreich.org/I/th99/v/U-Z/54753-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |         Function          | Label |    Function    | Label |
   |---------------------------+-------+----------------+-------|
   | 15-pin analog video port  |  CN1  | 9-pin TTL Port |  CN3  |
   |---------------------------+-------+----------------+-------|
   | Feature connector         |  CN2  |                |       |
   | (VGA/VESA)                |       |                |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Label | Position  |
   |----------------------------------------+-------+-----------|
   |>> | Unidentified                       | SW1/4 |    On     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     BUS SIZE DETECTION                     |
   |------------------------------------------------------------|
   |             Setting              |           J2            |
   |----------------------------------+-------------------------|
   |>>     |        Autodetect        |    Pins 2 & 3 Closed    |
   |-------+--------------------------+-------------------------|
   |       |    Standard Interface    |    Pins 1 & 2 Closed    |
   |------------------------------------------------------------|
   | Note: Orientation of J2 may vary. Check pin numbers on     |
   | card.                                                      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     BUS SIZE SELECTION                     |
   |------------------------------------------------------------|
   |            Setting             |           SW1/6           |
   |--------------------------------+---------------------------|
   |>> |           16-bit           |            Off            |
   |---+----------------------------+---------------------------|
   |   |           8-bit            |            On             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    SCAN RATE SELECTION                     |
   |------------------------------------------------------------|
   |               Rate                |         SW1/3          |
   |-----------------------------------+------------------------|
   |>> |        Less than 48Mhz        |           On           |
   |---+-------------------------------+------------------------|
   |   |           48-49Mhz            |          Off           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       MONITOR SELECT                       |
   |------------------------------------------------------------|
   |         Setting         |      SW1/1      |     SW1/2      |
   |-------------------------+-----------------+----------------|
   |           VGA           |       On        |       On       |
   |-------------------------+-----------------+----------------|
   |           EGA           |       Off       |       On       |
   |-------------------------+-----------------+----------------|
   |           CGA           |       On        |      Off       |
   |-------------------------+-----------------+----------------|
   |      MDA/Hercules       |       Off       |      Off       |
   |------------------------------------------------------------|
   | Note: SW1/1 & 2 affects 9-pin TTL connection. Not present  |
   | on all cards.                                              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         INTERRUPT                          |
   |------------------------------------------------------------|
   |           IRQ 9            |              J1               |
   |----------------------------+-------------------------------|
   |>> |        Disabled        |       Pins 2 & 3 Closed       |
   |---+------------------------+-------------------------------|
   |   |        Enabled         |       Pins 1 & 2 Closed       |
   +------------------------------------------------------------+

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

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |   Size    |     Bank 0     |    Bank 1     |    Bank 2     |
   |-----------+----------------+---------------+---------------|
   |   256KB   | (2) 128KB x 4  |     None      |     None      |
   |-----------+----------------+---------------+---------------|
   |   512KB   | (2) 128KB x 4  | (2) 128KB x 4 |     None      |
   |-----------+----------------+---------------+---------------|
   |    1MB    | (2) 128KB x 4  | (2) 128KB x 4 | (4) 128KB x 4 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             VIDEO MEMORY JUMPER CONFIGURATION              |
   |------------------------------------------------------------|
   |    Size    |     JP1     |     JP2     |        J3         |
   |------------+-------------+-------------+-------------------|
   |   256KB    |    Open     |   Closed    | Pins 1 & 2, 4 & 5 |
   |            |             |             |      closed       |
   |------------+-------------+-------------+-------------------|
   |   512KB    |    Open     |   Closed    | Pins 1 & 4, 2 & 5 |
   |            |             |             |      closed       |
   |------------+-------------+-------------+-------------------|
   |    1MB     |   Closed    |    Open     | Pins 2 &3, 5 & 6  |
   |            |             |             |      closed       |
   |------------------------------------------------------------|
   | Note: JP1 &2 are jumper blocks, number of pins             |
   | unidentified. Not present on all cards. Orientation of J3  |
   | may vary.                                                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        CLOCK SPEED                         |
   |------------------------------------------------------------|
   |            Setting             |            J4             |
   |--------------------------------+---------------------------|
   |>>       |    40Mhz(2 DRAM)     |     Pins 2 & 3 closed     |
   |---------+----------------------+---------------------------|
   |         |   48Mhz(4/8 DRAM)    |     Pins 1 & 2 closed     |
   |------------------------------------------------------------|
   | Note: Exact location of J4 unidentified. Not present on    |
   | all cards                                                  |
   +------------------------------------------------------------+