AIM 65 clone

Mr. Nagano, from Tokyo, Japan send me photos and circuit diagram of an AIM 65 clone he built.

It is a beautiful and functionally and esthetic faithful clone. In fact, he built two, one with a CPLD 3V3 version and a 5V version with a 6532 RIOT.

Features of the AIM-65 clone


  • TTY Interface (usb-serial)
  • Thermal Printer
  • QWERTY keyboard
  • 20 x 16-Segment Display
  • No Cassette Tape Interface

Power Supply

  • Main Logic: 3.3V
  • 16-Segment Display : 5V
  • Thermal printer: 9V


    • 16, 12, 8MHz etc. can be selected by replacing the OSC module.
    •   In addition, 1, 1/2, 1/4, 1/8 can be selected by the DIP switch on the CPLD board
  • Peripherals ( VIA/PIA/RIOT ) :
    • If the CPU clock is set to 1 or 1/2, peripherals will run at 1/4 of that frequency.
    • When the CPU clock is set to 1/4 or 1/8, peripherals run at the same frequency as the CPU.

The following can be selected by setting the DIP SWITCH of the FLASH memory board.

  • 010: PL65/ASSEMBLER
  • 011: GWK-BASIC V2.1 for Siemens PC100
  • 100: Instant PASCAL
  • 101..111: Reserved

Mr. Nagano also made a version with a voltage of 5V and running at 2MHz. R65C02, R65C22, R6532A are used for it.