23 Feb
2006
23 Feb
'06
4:05 p.m.
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 assumed
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 LOTS
of strings that tell me I have actually read the contents of the disk (this
machine used DS/QD drives).
Here are some examples:
Licensed to Tandy Corp.
BIOS version 01.00.00
Copyright 1983 Tandy Corp. All rights reserved.
MS-DOS version 02.00.00
Copr. 1981,82,83 Microsoft Corp.
I'm guessing I need a good hex editor to look at the directory and offsets
to see if they jibe. Any good windows based hex editors (or at least
viewers) that anyone can suggest?
I'll send the same message to 'classiccmp'
Kelly
23 Feb
23 Feb
5:23 p.m.
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
assumed
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
LOTS
of strings that tell me I have actually read the
contents of the disk
(this
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.
Cheers,
Chuck
27 Feb
27 Feb
12:04 a.m.
MZ has always been the magic number.
Mark Zbikowski's initials.
http://www.answers.com/main/ntquery;jsessionid=66qkfr83sa5ae?method=4&d…
On Thu, 2006-02-23 at 16:05, 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 assumed
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 LOTS
of strings that tell me I have actually read the contents of the disk (this
machine used DS/QD drives).
Here are some examples:
Licensed to Tandy Corp.
BIOS version 01.00.00
Copyright 1983 Tandy Corp. All rights reserved.
MS-DOS version 02.00.00
Copr. 1981,82,83 Microsoft Corp.
I'm guessing I need a good hex editor to look at the directory and offsets
to see if they jibe. Any good windows based hex editors (or at least
viewers) that anyone can suggest?
I'll send the same message to 'classiccmp'
Kelly
12:55 p.m.
Tom Jennings wrote:
MZ has always been the magic number.
ZM works too, depending on DOS version.
--
Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/
Help our electronic games project: http://www.mobygames.com/
Or check out some trippy MindCandy at http://www.mindcandydvd.com/
A child borne of the home computer wars: http://trixter.wordpress.com/
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