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Classic99 399.20


Classic99 is a freeware TI99/4A emulator for Windows 2000 and up.


Classic99 runs most stuff fine:

  • System ROMs and many cartridges are INCLUDED under license from Texas Instruments
  • boots and runs all console OS functions (except cassette I/O) and TI BASIC correctly
  • most modules seem to work fine
  • XB/Atarisoft/Jon379/SuperSpace cartridge bank switching supported
  • full sound emulation of all channels
  • Speech implemented for both speech ROMs and external speak
  • keyboard CRU scanning implemented
  • joystick support
  • 9901 timer supported
  • disk supports V9T9 files, TIFILES/Xmodem files, Windows native files, V9T9 DSK and PC99 DSK images (DSK images are readonly)
  • DirectX Windowed and FullScreen, as well as nonDirectX windowed modes.
  • Full Sprite collision detection (by pattern)
  • Numerous video filter options (HQ4X, 2xSAI, SuperEagle, NTSC, etc)
  • Integrated debugger with single step
  • PS/2 keyboard emulation builtin
  • Mousedriven menu selection (doubleclick on screen)
  • 1MB Super AMS card supported
  • Full source code included



  • disable the DAC buffer overflow warning during overdrive
  • return PRG for program type in disk file type identification debug
  • add sector bitmap debug to disk images (probably temporary)
  • rewrite the cluster output routine to fix corruption of output fragmented files


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