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Classic99 - v378

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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
75286 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 including digitized sound support
-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)

(2015-02-17)
  • (forgot to post updates for 377)
  • Fixes for DAC with non-standard CPU speed
  • large file hack fixes
  • crash fix for loading 378 files larger than max (2MB)
  • Fixes to make big file hack work with files of arbitrary size.

  •  
    (2015-02-14)
  • crash fix for loading 378 files larger than 2MB
  • DAC fix for non-100% CPU settings
  • big file hack fix - only enabled on command line (not yet in documentation)

  •  
    (2015-02-06)
  • No longer blindly unmutes audio when re-sizing window (including minimize) - audited other mute/unmute locations
  • No longer unpauses breakpoints when opening debugger

  •  
    (2015-02-06)
  • EEPROM lock support for UberGROM
  • Miscellaneous Audio fixes
  • new DAC system added (works for cassette gate bit and high frequency square waves)audio mute fixes for menu interactions
  • tweak system timing code for more responsiveness
  • change debug screen to say 'mask' instead of 'size' on color and pattern tables in bitmap mode

  •  
    (2014-10-08)
  • 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

  • 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 "Open Broadcaster Software" 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
  • 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
    Theme:Emulator
    Created:2002-07-28
    Last Update:2015-02-17
    Status:Open

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