Date   : Mon, 11 May 1992 09:56:49 -0400
From   : Jay Sage <sage@ll.mit.edu>
Subject: A Few CP/M Questions

Lou Glassy asked a few CP/M questions.

>> --What machines does CP/M68K run on?  Was this a product of
>>   DRI, or of some other vendor?

   I don't know very much about this, but there were a couple of Motorola
68000-based computers that had CP/M-68K.  The Sage computer (no relation to
me) was one of them.  I don't think there has been any activity in this area
for many years.

>> --Is CP/M still supported (ie sold, having apps developed for)
>>   by any current vendor?  If not, is the source code for it available?

   There is still a tremendous amount of activity in the 8-bit CP/M-
compatible computing area.  Most of this centers around Z-System, a modern
replacement for CP/M.  Besides occasional new versions of the operating
system itself, quite a few applications have appeared.  Many new public-
domain programs appear every month and are distributed by bulletin board and
via the Z-System Software Update Service (ZSUS).  There have also been a
number of commercial applications, such as BDS Z (a Z-System version of the
venerable BDS C compiler), ZMATE (a macro text editor derived from PMATE),
and ZMAC (a state-of-the-art macro assembler/linker/librarian package).

   You ask about source code.  I assume you mean for the operating system. 
Disassembled source code for CP/M has been floating around for at least a
decade (but who would want it!).  Source code for versions of ZCPR (which
replaces the CP/M command processor) through 3.3 has been released; the
source code to version 3.4 is available from me as a commercial product. 
There are several BDOS replacements, both public-domain and commercial.  The
PD ones are generally available in source-code form.

-- Jay Sage