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Monthly Archives: December 2014

Verifone Omni 396

Tetris on a Credit Card Terminal

December 16, 2014 Christopher
Tetris on a Credit Card Terminal
Tetris on a Credit Card Terminal

At VCF MidWest this fall, I demonstrated how I had reverse engineered a credit card terminal and reprogrammed it to run CP/M.  While there, there were several discussions of what to do next.  During these conversations, I realized that by turning the terminal sideways, I could use it as a display for Tetris.

Continue reading Tetris on a Credit Card Terminal →

A collection of random projects and thoughts

  • Apple 1 Software
    • Infocom Games on an Apple 1
    • Apple 1 with CFFA1 Emulation with MESS
  • Apple 1 Keyboards
    • Using an Apple II Keyboard with an Apple 1 Computer
    • Using a PS/2 Keyboard with an Apple 1 Computer
    • Using a TI Silent 700 Model 733 Keyboard with an Apple 1 Computer
    • TI Silent 700 Model 733 Keyboard Logic
    • Converting the IC Station PS/2 Keyboard Interface to ASCII
  • PROM programmer for Apple 1 PROM chips
    • TI SN74S287 Programmer
  • Infocom Interpreter on a Tandy WP2
    • Tandy WP-2 Running an Infocom Interpreter
  • Life on an ELF membership card
    • Rule 90 on the Cosmac ELF Membership Card
  • CP/M on a credit card terminal
    • Verifone Omni 396 Technical Details
    • Verifone Omni 396 Communication

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