OMNICOMP GRAPHICS CORPORATION

M&M BASIC

Category                     Video
Video Types Supported        VGA
Video Processor              S2C9001
Highest Resolution Supported 720 x 480
Data Bus Type                16-bit ISA
Memory Type                  N/A
Maximum Onboard Memory       N/A

[Image]

                                CONNECTIONS

        Purpose           Location            Purpose           Location

  Video input connector      CN1       VESA feature               JP4
                                       connector

  Video output               CN2
  connector

                     I/O REGISTER SPACE CONFIGURATION

                 Setting                                JP1

  »                 Fixed                        Pins 1 & 2 closed

                  Programmed                     Pins 2 & 3 closed

                        BASE I/O ADDRESS SELECTION

  Address   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6   SW1/7   SW1/8

   100h     Off      On      On      On      On      On      On      On

   200h      On     Off      On      On      On      On      On      On

   300h     Off     Off      On      On      On      On      On      On

   400h      On      On     Off      On      On      On      On      On

   500h     Off      On     Off      On      On      On      On      On

  FB00h     Off     Off      On     Off     Off     Off     Off      Off

  FC00h      On      On     Off     Off     Off     Off     Off      Off

  FD00h     Off      On     Off     Off     Off     Off     Off      Off

  FE00h      On     Off     Off     Off     Off     Off     Off      Off

  FF00h     Off     Off     Off     Off     Off     Off     Off      Off

       Note: A total of 255 base address settings are available. The
       switches are a binary representation of the decimal memory
       addresses. SW1/8 is the Most Significant Bit and switch SW1/1 is
       the Least Significant Bit. The switches have the following decimal
       values: SW1/8=32768, SW1/7=16384, SW1/6=8192, SW1/5=4096,
       SW1/4=2048, SW1/3=1024, SW1/2=512, SW1/1=256. Turn off the
       switches and add the values of the switches that are off to obtain
       the correct memory address. (Off=1, On=0)

                      VIDEO INPUT IMPEDANCE SELECTION

          Setting                SW4/2          SW4/3           SW4/4

   Red display signal from        Off            Off             Off
          VGA card

  Green display signal from       Off            Off             Off
          VGA card

  Blue display signal from        Off            Off             Off
          VGA card

  Channel 1 composite video       Off            Off             Off
      or Y of S-video

  Channel 2 composite video       Off            Off             Off
      or Y of S-video

  Channel 3 composite video       Off            Off             Off
      or Y of S-video

   Channel 1 C of S-video         Off            Off             On

   Channel 2 C of S-video         Off            On              Off

   Channel 3 C of S-video         On             Off             Off

                  VIDEO INPUT IMPEDANCE SELECTION (CON’T)

          Setting                SW4/5          SW4/6           SW4/7

   Red display signal from        Off            Off             Off
          VGA card

  Green display signal from       Off            Off             Off
          VGA card

  Blue display signal from        Off            Off             Off
          VGA card

  Channel 1 composite video       Off            Off             On
      or Y of S-video

  Channel 2 composite video       Off            On              Off
      or Y of S-video

  Channel 3 composite video       On             Off             Off
      or Y of S-video

   Channel 1 C of S-video         Off            Off             Off

   Channel 2 C of S-video         Off            Off             Off

   Channel 3 C of S-video         Off            Off             Off

                  VIDEO INPUT IMPEDANCE SELECTION (CON’T)

          Setting               SW4/8          SW4/9           SW4/10

  Red display signal from        Off            Off              On
         VGA card

    Green display signal         Off             On             Off
       from VGA card

  Blue display signal from        On            Off             Off
         VGA card

    Channel 1 composite          Off            Off             Off
   video or Y of S-video

    Channel 2 composite          Off            Off             Off
   video or Y of S-video

    Channel 3 composite          Off            Off             Off
   video or Y of S-video

  Channel 1 C of S-video         Off            Off             Off

  Channel 2 C of S-video         Off            Off             Off

  Channel 3 C of S-video         Off            Off             Off

                       MISCELLANEOUS TECHNICAL NOTE

  SW2 is the Video Color Switch. It is used to adjust the timing of the
  color information in the video signal. SW2 consists of six switches the
  default is the SW2/4 switch in the On position, & the rest of the
  switches in the Off position. You must use a "trial and error" process
  to adjust SW2. Only one switch can be On at any given time.

                       MISCELLANEOUS TECHNICAL NOTE

  SW3 is the Color Key Skew Switch. It is used to adjust the timing of
  the color key signal. SW3 consists of six switches the default is the
  SW3/4 switch in the On position, & the rest of the switches in the Off
  position. You must use a "trial and error" process to adjust SW3. Only
  one switch can be On at any given time.

  FACTORY CONFIGURED - DO NOT ALTER

      Switch            Position

       SW4/1               On