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.

Anyone want to key in catalog numbers and prices?

So far I have gotten RSC-03, RSC-04, RSC-05, and RSC-07 entered into the catalog search page. If anyone is in the mood to help, I would send you a PDF of a catalog, and would ask for an ASCII file in the format of ‘catalog number, price, page number’ for each item.

By putting this additional information into the catalog search page, you can see when products were added, when products were removed, and the prices in between.

if you are willing to help, please let me know.

January 8, 2019 – Site News

Site Updates since the last …

  • Figured out how to make the product entries far less ugly under the various Model pages, so will be updating those as time allows.
  • Added Mark Blair’s Model 4 ROM EPROM Adapter Board to the Hardware Modifications and Fixes page.
  • At the request of Pascal Holdry, added the ability to translate pages to other languages (top of the right navbar). Pascal’s thought is that it is about 80% accurate, but the other 20% is easy enough to figure out.
  • Updated the Catalog Search Page to support Catalog ID (such as “RSC-03”) and Price (in that catalog; so it will change catalog to catalog). Now I need to go through the process of reviewing each catalog to enter that info. Right now only RSC-03 and RSC-04 have been entered. Possible uses include seeing when a product was first listed, when it was no longer listed, and what the prices were at each iteration.

    Anyone who wants to help enter the data from catalogs, please let me know.