🚀 go-pugleaf

In article <844@ocsmd.ocs.com> motti@ocsmd.ocs.com (Motti Bazar) writes:
>I'm developing a DOS shell that plays with Interrupt 21H.
>One function (4B - Exec) is a tough one to emulate. Is there
>anybody that knows about any public domain code to emulete this
>function ??? If there is interest, I'll post the answer.

Don't let it intimidate you; it's not as difficult as it may first appear.
I've written such a function, but I'm unable to send it to you since it
belongs to my employer now.  But here are some hints:

First, get a copy of the DOS technical reference guide.  It documents the
format of the .EXE header and tells how it is loaded.  The MS-DOS encyclo-
pedia is recommended and probably also has this info.

There is an operating system called Wendin-DOS that comes with source
code (for about $100) that contains an .EXE loader, but of course, that
belongs to Wendin...

BEST BET: I noticed several progams on SIMTEL that were replacements for
the DOS EXE2BIN program.  Such a program is almost identical to an .EXE
loader.

Hope this helps.
-Jeff
pipkins@imagen.com