MC6802 48 voice synthesizer

  • CPU: MC6802/MC68A02/MC68B02 4MHz/6MHz/8MHz
  • RAM: 128 bytes (internal to cpu) up to 48K
  • ROM: 8K up to 56K
  • PTM: 1 or 2 (address selectable) MC6840/MC68A40/MC68B40 Programmable Timer Module
  • PIC: MC6828 Priority Interrupt Controller
  • VIDEO: MC6847 Video Display Generator
  • SERIAL: 1 or 2 (address selectable) MC6850/MC68A50/MC68B50 serial cards
  • AUDIO: 6 Voice Sound card, up to 8 for a total of 48 voices. ADSR functionality. Frequency range 27.5Hz to 8kHz
  • BUS: standard passive ISA backplane
  • DEBUGGING: Single Step module with programmable clock rate. Bus Monitor card

Before we learn more, let's first see how we arrived here.

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