New ROM Disassembly *and* Lance Micklus OK’s downloads

Two announcements:

  • Frank Durda IV had been working on a Model 4 ROM Update which was never released. That ROM has been disassembled and has been added to the ROM/CPU Page.
  • Thanks to a facebook discussion with Miyagami Noriko, I have corrected the entries for DOGSTAR ADVENTURE in the database and sought, and no have now received, permission from the awesome Lance Micklus to make all of his programs downloadable; so they are (and as programs are available, so are their manuals)! Thank you Lance!

TRS80GP v2.3 Released

TRS80GP has been updated to v2.3

Visit The TRS80GP Web Page for the download and information, or here for the emulator.

New Features:

  • Support for hard drives.
  • Model 16 emulation.
  • Preliminary support for Model I Percom and Radio Shack double-density disk interfaces.
  • Model II double-sided floppy support.
  • New Model II ROM now the default; get original with “-r0”.
  • Added Model 1 revision 1.1 ROM and -nlc not needed for earlier ROM revisions.
  • Emulator tries adding .dmk, .imd, .jv3, .jv1 and .dsk to files it can’t find.
  • Windows menu key brings up the right-click context menu.
  • Current drive track is displayed status bar.
  • Permit writing to Model I, III, and 4P ROM

Bug Fixes/Adjustments:

  • Montezuma CP/M no longer misses shift keys regularly.
  • If a disk FORMAT proceeds beyond the last track, DMK and IMD append blank tracks.
  • DMK format detection rules relaxed to allow for larger file truncation.
  • No longer get down-arrow stuck when using Ctrl+Alt+V and the like.
  • Debugger memory, disassembly and stack update on reset or change in memory map.
  • Cassette auto-save capture Scott Adams Adventures saves one instead of two files.
  • Animated GIF output usually smaller by extending the delay for repeated frames.
  • Debugger now shows Model II ROM contents and disassembly when it is mapped in.
  • Single stepping in debugger updates the trace window even if tracing is off.

March 4, 2020 – Site News

Site Updates since the last …

SDLTRS II Updated to v1.2.7



Jens Guenther has updated his forked SDLTRS to v1.2.7.

Per Jens, this version runs on BSD, Haiku, Linux, MacOS(X), Solaris and Windows (95 to current).

Sone of the updates include:

  • Runs under MAC OS Catalina
  • Select and execute CMD files directly in the Emulator
  • Save screenshot of the Emulator window as BMP file
  • Show Z80 registers in the window title bar

Site News

Site Updates since the last …

  • RSC-03 through RSC-09 are now in the Catalog Search Page (special thanks to Jerold Stratton for assistance). If anyone wants to help enter the data from catalogs, please let me know.

  • From time to time I try to reach out for permission to post software and from time to time the author is deceased. I have added a note to the Software Search results page if the author has passed away, and the year of passing. Right now, I have only 4 entries (Sparky Starks, Michael Shrayer, Lance Wolstrup, and Leo Christopherson). If you know more, please let me know.