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Classic99 - v374

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If this software is cool or useful to you, consider a small donation to the programmer! There is *no* need to pay to download and enjoy this software! But it's a lot of work and I do it in my so-called spare time, so a couple of dollars would be really appreciated! :)
(Alternately, there's my Amazon Wishlist)

Click here to download:
6 downloads this week
74692 downloads total
windows.gif Classic99 Emulator and Source Code, plus Arc303g and documentation (9.6 mb) (#1) since 2014-07-31

(previously Ami99)

Click here for my TI Software

Classic99 is a freeware TI-99/4A 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 read-only)
-DirectX Windowed and FullScreen, as well as non-DirectX 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 built-in
-Mouse-driven menu selection (double-click on screen)
-1MB Super AMS card supported
-Full source code included

TI-99/4(A) ROMs ARE INCLUDED!. Just select the system you want from the menu! This program will likely always be BETA and therefore incomplete.

Last Updates (max 5)

  • some hacky test code in sound for unrelated projects - ignore
  • increase cartridge bankswitch size to 2MB
  • add non-inverted cart switch scheme (type '8')
  • Disable the VDP warning everyone dislikes ;)
  • Removed ROMs from source again

  • TurboForth label updated to 1.2 (binary was already correct)
  • Rasmus' ECM sprite support added
  • Fix padding when making 379 carts
  • add EEPROM test code to ubergrom
  • GPU can write to VDP registers
  • weak VDP overrun warning
  • fix to F18A DPM disable handling
  • Fix F18A SIT bit pattern handling
  • Fixes to F18A enhanced sprite mode handling thanks to RasmusM
  • Debug fix in disk image handler
  • updated rendering interface to 32-bit (all filters updated)
  • removed unused code from 2xSAI - no need for NASM anymore
  • removed DDRAW.LIB dependency (still uses DirectDraw though)
  • (checkin only) adding DSK.DISKNAME support to DSR and TurboForth2
  • Added new debug hook system (memory only implemented, disabled by default)
  • improve timing thread

  • Added support for F18 opcodes to disassembler (not fully tested)
  • Add support for interleaved GPU operation (check option under Video)
  • return end of frame on GPU address >7000 so it can be checked for (super hacky)
  • add heat map to GPU VDP access
  • make GPU VDP memory changes force a redraw
  • override TriggerInterrupt for GPU to prevent potential errors
  • protect 'muteaudio' call with audio critical section (helps pause on inactive?)
  • more DSR debug checks
  • fix for more than 100 cartridge groups
  • fix CRU testing of VDP interrupt bit
  • updated source folder

  • Don't corrupt >83D0->83D3 in disk emulation
  • Make DSK RAM corruption an option
  • Add disable for F18A

  • First pass, sort of working read-only TI Disk Controller support (hacker only)
  • Don't warn if 128k mode is active on startup
  • save and restore 128k hack checkbox
  • save screen size if not a multiple of resolution
  • remove the hacky cartridge remap code that never worked
  • add option to corrupt DSK ram to help find conflicts
  • Ensure FIAD only writes well formed status bits into the header
  • Create file by sectors will pad the file out to the correct size (not proven)
  • Lots more DSRLNK debug & warnings - checks PAB and scratchpad addresses for basic information
  • Fail opcode LOAD if file is larger than buffer - real disk does this
  • Warn on DSR conflicts (turning on a card while another card is already on)

  • Notes
    Note: this is a beta release. I'm not done all the improvements yet. Use with care

  • Video recording may be broken - I've found Bandicam to work very well though!
  • Text to Speech apps and other apps that flood the speech synth, ignoring the control bits, do not work (ie: TE2)
  • DSK image support is mostly read-only
  • DAC or very fast sound changes will currently not work
  • Uninitialized memory detection does not work on AMS RAM
  • 80 column mode does not work with screenshots, AVI recording, filters, or any stretch except DIB
  • 128k mode is very untested and not guaranteed to work - nor is it intended to be improved later
  • F18A support is very very incomplete
  • Title:Classic99
    Last Update:2014-10-08

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