
TWINHEAD INTERNATIONAL CORP.

CT-8090

Card Type                 Video card
Video Processor           Unidentified
Maximum Onboard Memory    256KB DRAM
I/O Options               Feature connector, light pen port
Data Bus                  8-bit ISA
Video Types Supported     EGA
Highest Resolution        640 x 350
Supported

[Image]

                                CONNECTIONS

           Function             Label           Function            Label

  Unidentified                   J1     Feature connector            J4

  Unidentified                   J2     Light pen port               P2

  9-pin EGA port                 J3

                        MONITOR TYPE (EGA PRIMARY)

   Primary      Secondary       P1       SW1/1    SW1/2    SW1/3   SW1/4

   CGA, 40 x    Monochrome    Pins 2 &    On       Off     Off       On
      25                      3 closed

   CGA, 80 x    Monochrome    Pins 2 &    Off      Off     Off       On
      25                      3 closed

   EGA, 40 x    Monochrome    Pins 1 &    On       On       On      Off
      25                      2 closed

   EGA, 80 x    Monochrome    Pins 1 &    Off      On       On      Off
      25                      2 closed

  Monochrome     CGA, 40 x    Pins 2 &    On       Off      On      Off
                    25        3 closed

  Monochrome     CGA, 80 x    Pins 2 &    Off      Off      On      Off
                    25        3 closed

                       MONITOR TYPE (EGA SECONDARY)

   Primary      Secondary       P1       SW1/1    SW1/2    SW1/3   SW1/4

  Monochrome     CGA, 40 x    Pins 2 &    On       On       On       On
                    25        3 closed

  Monochrome     CGA, 80 x    Pins 2 &    Off      On       On       On
                    25        3 closed

  Monochrome     EGA, 40 x    Pins 1 &    On       Off      On       On
                    25        2 closed

  Monochrome     EGA, 80 x    Pins 1 &    Off      Off      On       On
                    25        2 closed

   CGA, 40 x    Monochrome    Pins 2 &    On       On      Off       On
      25                      3 closed

   CGA, 80 x    Monochrome    Pins 2 &    Off      On      Off       On
      25                      3 closed

