The M8 family grew with the addition of the M8 Game Board (code name Motorino):

The SST-6809 V2.1 board is on the left and the M8 Game Board is on the right.

The M8 Game Board combines a TI TMS9918A Video Display Processor (VDP) such as used for ColecoVision graphics, a Phillips SAA1099P six-channel sound synthesizer, a Motorola 6850 or Hitachi 6350 serial ACIA port, and dual joystick inputs on the 1.0 board, or a single joystick with fire button on the 2.1 board.

Here, the M8 Game Board runs a VDP09 demo with a bouncing sprite over a changing Graphics II mode background.

Bit 0 of each HCT541 is a read of the corresponding synth's DTACK pin for polling when using slower commands.

https://github.com/KenWillmott/M8-Game-Board

M8 Game Board Wiki:
https://github.com/KenWillmott/M8-Game-Board/wiki

Return to SST-6809