Apple IIc Plus


At A Glance

Apple IIc Plus

The Apple IIc Plus was the last model in the Apple II line. It was the successor to the Apple IIc and sported an internal 3.5″ floppy drive as well as faster processor – a 65C02 chip running at up to 4 MHz. One of it’s major features was its internal power supply, replacing the previous bulky external supply for the IIc. Read more about the Apple IIc Plus over at Wikipedia..

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Original Specifications


  • Microprocessor
    • 65C02 running at either 1 MHz or 4 MHz (user selectable)
    • 8 KB SRAM cache (16 KB physical installed; 8 KB for TAG/DATA)
    • 8-bit data bus
  • Memory
    • 128 KB RAM built-in
    • Expandable from 128 KB to 1.125 MB RAM
    • 32 KB ROM built-in
  • Video
    • 40 and 80 columns text, with 24 lines
    • Low-Resolution: 40×48 (16 colors)
    • High-Resolution: 280×192 (6 colors)
    • Double-Low-Resolution: 80×48 (16 colors)
    • Double-High-Resolution: 560×192 (16 colors)
  • Audio
    • Built-in speaker; 1-bit toggling
    • User adjustable volume (manual sliding switch)
  • Built-in storage
    • Internal 3.5-inch floppy drive
    • 800 KB, double-sided
    • Motorized ejection/auto-injection
  • Internal connectors
    • IIc Plus Memory Expansion Card connector (34-pin)
    • Internal modem
  • Specialized chip controllers
    • IWM (Integrated Wozniak Machine) for floppy drives
    • MIG (Magic Interface Glue) with 2 KB SRAM, for “dumb” 3.5-inch drive support
    • Dual 6551 ACIA chips for serial I/O
  • External connectors
    • Joystick/Mouse (DE-9)
    • Printer, serial-1 (mini DIN-8)
    • Modem, serial-2 (mini DIN-8)
    • Video Expansion Port (D-15)
    • Floppy drive SmartPort (D-19)
    • NTSC composite video output (RCA connector)


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