Re: Software for MS-DOS 1.25

Den Sun, 15 Oct 2017 21:39:13 +0200 skrev Ruud@Baltissen.org:
> > > It does! Completely forgot about that. Good idea!
> 
> I Installed FreeDOS on a XT today.

Nice!

> > say that it needs "as little as" 640 kB memory 
> 
> FreeDOS will run on a 256 KB machine, no problem. The problem is the 
> left over free memory: you don't have enough room to run any decent 
> progam. 

That isn't any problem - my suggestion to look into FreeDOS was only
to be able to test a new BIOS with a DOS that we have source code for.
When an (more or less) unmodified FreeDOS boots, there should be a good
chance that IBM PC-DOS of various versions boots right away or perhaps
with small changes in BIOS.

> But you will have, more or less, the same problem with DOS 3.3. 

But being able to boot any DOS version must be the goal. I assume that
software written back in the days when 256k were not unusual is written
for earlier versions than 3.3. As I understand it there isn't that much
new stuff in any DOS versions above 2.0 that general programs use, so
2.0 will probably do fine with the programs that might be possible to
run anyways on this machine.

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