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Classic99 - v399a

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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)

17 downloads this week
9414 downloads total
windows.gif Download emulator, source and documentation. (9 mb) (#1) since 2018-08-06

I have a lot of database entries to fill in. ;)

Open source (but restrictive license) emulator including ROMs licensed by Texas Instruments - see documentation for license and restrictions.

Tips and tricks video:
Using the debugger:

Last Updates (max 5)

-Fix build options to work on Windows XP again
  • updated manual
  • updated to Visual Studio 2017
  • added CS1 read support
  • flagged manifest as hidpi aware
  • fixes for 9901 timer handling, found via CS1 in BASIC and EasyBug
  • fix for
  • Allow mid-instruction VDP updates

  • make the breakpoint on disk header corruption an option in the debugger menu (off by default)
  • NV file option ('N') is now allowed for cartridge memory space in non-banked cartridges only
  • minimemory RAM is now non-volatile (weakly tested)
  • emulator now sets the current folder to the same as classic99.exe by default

  • Fix for reading status of PROGRAM file images
  • Related code shuffled

  • Notes
    Source code is now on Github at

    Last Update:2018-02-17

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