Path: utzoo!attcan!uunet!zaphod.mps.ohio-state.edu!usc!ucsd!ucbvax!bloom-beacon!eru!hagbard!sunic!isgate!krafla!adamd
From: adamd@rhi.hi.is (Adam David)
Newsgroups: comp.os.cpm
Subject: Re: CP/M C compilers
Message-ID: <2401@krafla.rhi.hi.is>
Date: 11 Nov 90 17:50:18 GMT
References: <1990Nov9.233947.4224@mcs.anl.gov> <16403@mentor.cc.purdue.edu>
Organization: University of Iceland
Lines: 24

In <16403@mentor.cc.purdue.edu> wilker@descartes.math.purdue.edu (Clarence Wilkerson) writes:

> CP/M is not public domain. The major components of CP/M
>are
>1) Utilities..ASM.COM, etc. There are public domain upgrades to most
>of these.
>2) CCP  the command line processor. There are several z80 and 8080
>replacements/enhancements to this.
>3) BDOS  the guts of CP/M. There are several z80 replacements in
>SIMTEL20  PD2:<CPM.BDOS>. I don't know of any purely public domain
>8080 versions. I have for example a dis-assembly of the DRI BDOS
>but it is not public domain.
>4) BIOS  this comes from the computer maker, or from you, adapted
>to your machine.

I read a few years ago (don't remember where offhand) that DRI had put CP/M 2.2
in the public domain when it was no longer viable as a commercial product and
possibly also so they could back out of supporting the system.
CP/M 3.0 retained full proprietory material status and continued to be sold.
Two questions:
1) Is this true?
2) how much of the material was actually released to PD?

Adam David.            adamd@rhi.hi.is