The TRS-80 Journey Continues

Mike Loewen mloewen at
Thu May 5 18:31:30 CDT 2022

On Thu, 5 May 2022, Fred Cisin via cctalk wrote:

> Although TRS-DOS didn't (until 6.0?, when TRS-DOS became rebranded LDOS), the 
> after-market OS's supported DS and 80 track.
> I don't remember how you needed to tell the OS that you had DS or 80 track.
> But, once the OS knows, then the 55GFR, operating as a 55F, can, of course 
> work.
> Do you know how to tell your CP/M about DS and 80 track?

    Montezuma Micro CP/M (which Bill mentioned in a previous post) has a CONFIG 
utility to tell it what kind of drive is installed (5" or 8", number of 
tracks, number of sides, step rate). After that, there are literally dozens of 
disk formats to choose from, TRS-80 and many others.

Mike Loewen				mloewen at
Old Technology

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