Jump to content


The TI-99/4A Operating System

Operating System Monitor GPL Interpreter KSCAN ISR XML Utilities

27 replies to this topic

#26 Asmusr ONLINE  


    River Patroller

  • 2,466 posts
  • Location:Denmark

Posted Fri Mar 18, 2016 4:57 PM


Oops! :woozy:  Here’s the context that led me astray: post #928 of “Classic99 Updates”.



You’re most welcome.




I'm obviously becoming more forgetful.  :)

#27 kl99 OFFLINE  



  • 676 posts
  • Location:Vienna, Austria

Posted Sun Mar 20, 2016 3:22 PM

This is a great project and effort Lee!

I tried my ways once to recreate a commented version of the console rom / groms for the 99/4a by starting from the 99/8 console source files, which were released.

The "official" comments by TI are a great ressource. The 99/8 console rom can be considered to be identical over many parts, so the comments can be "moved" over to a disassembled 99/4a rom/grom file.

Diff Tools like WinMerge [www.winmerge.org] are essential for such a comparison project.

I also tried to align the sourcecode with Intern to include his comments.

This is another source i discovered already on whtech:


The 99/8 source files are in the same ftp-directory.


I also discovered another ressource for commented source files inside the Genie.

Here is all what I have so far. I got sidetracked by some other "interesting" thing.

Attached File  TI-99#8-wip.zip   1.14MB   15 downloads

Attached File  System-Software-Lee.zip   269.82KB   15 downloads


Maybe its of help.

#28 kl99 OFFLINE  



  • 676 posts
  • Location:Vienna, Austria

Posted Fri Mar 25, 2016 1:57 AM

In the last days I have tried to prepare a merge of these two files by adding comment lines to the file if the other had a code or comment line to achieve a better diff comparison. It's not finished yet, but once it is, the extensive original comments from the 99/8 source code [intsim.txt] can be moved over to your work file [ROM-4A-a.a99] quite easily.

Unless I made a mistake, the ROM-4A-a-comments.a99 file should still generate the same binary output.


Whenever I added a line, i did it with "****".


Attached File  ROM-4A-a-comments.a99   55.22KB   16 downloads

Attached File  intsim.txt   96.83KB   14 downloads

Also tagged with one or more of these keywords: Operating System, Monitor, GPL Interpreter, KSCAN, ISR, XML Utilities

0 user(s) are browsing this forum

0 members, 0 guests, 0 anonymous users