MS-DOS 2.0 and "semi compatibles"
CCTalk at catcorner.org
Thu Feb 23 19:26:20 CST 2006
> -----Original Message-----
> From: Chuck Guzis [mailto:cclist at sydex.com]
> Sent: Thursday, February 23, 2006 8:23 PM
> On 2/23/2006 at 7:05 PM Kelly Leavitt wrote:
> >I just imaged a disk of an MS-DOS compatible computer (Tandy
> 2000). Does
> >anyone here know the magic number of an exe under ms-dos 2.0? I had
> >that it was MZ, like current exe files, but I only see 2 or
> 3 occurrences
> >of this in the entire data stream from the disk. On the plus
> side, I see
> >of strings that tell me I have actually read the contents of the disk
> >machine used DS/QD drives).
> Why does this surprise you? I think that it'd be safe to say that the
> preponderance of executables in the old 2.0 and before days were .COM
> files. But AFAIK, it's always been MZ--though I can check my
> DOS 2.0 and
> DOS 1.1 docs for you.
Well, there are 8 or 10 programs on the disk in question. Shouldn't MZ then
show up 8 or 10 times. If I find a good hex editor I can read the DIR
structure and figure out where the files start and see what is there.
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