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Apple IIc Plus

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  • Selectable 4 megahertz or 1 megahertz clock speed
  • 128 kilobytes of user memory (RAM), expandable to more than 1 megabyte
  • 800-kilobyte disk drive (uses 3.5-inch disks)
  • Built-in color graphics
  • Built-in Applesoft BASIC programming language, plus an on-disk tutorial

General Information

CPU

  • Microprocessor: 65C02
  • Clock speed: 1 to 4 megahertz (user selectable)
  • Address bus: 16 bits
  • Address range: 65,536 bytes (64K)
  • Data bus: 8 bits
  • Registers (8-bit): accumulator, two index registers, stack pointer, and processor status register

Memory

  • 128K of RAM (random-access memory), optionally expand­able to 1.15 megabytes
  • 32K of ROM (read-only memory), containing:
    • System monitor
    • Applesoft BASIC interpreter
    • 80-column display firmware

Disk drive

  • Disk size: 3.5 inches
  • Capacity: 800 kilobytes
  • Recording surfaces: 2
  • Tracks per surface: 80
  • Blocks per disk: 1,600
  • Push button for motorized eject

See Also