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Path: utzoo!linus!philabs!seismo!hao!hplabs!sri-unix!ACB.TYM@office-2
From: ACB.TYM%office-2@sri-unix.UUCP
Newsgroups: net.micro.cpm
Subject: BDOS secrets
Message-ID: <3612@sri-arpa.UUCP>
Date: Fri, 29-Jul-83 11:02:00 EDT
Article-I.D.: sri-arpa.3612
Posted: Fri Jul 29 11:02:00 1983
Date-Received: Mon, 1-Aug-83 11:29:48 EDT
Lines: 15

Can anyone direct me to where I might find out 

   1.  What is in the first 6 bytes of the BDOS (before the entry point).

   2.  What significance is attached to the 4 addresses after the BDOS entry 
   point (after the initial jump).  What services are performed by the 
   subroutines pointed to by these addresses.

If this discussion has gone on before, I am sorry, just point me at the archive 
files are I will try to catch up.  If there is a document available with with 
the answers, just point me.

I got started on these questions after watching a popular directory lister (XD 
or SD) go south for the winter with a spooler overlay in place, and found it 
using these secret addresses.  Thanks  Bomberger@office-3.