Date   : Mon, 23 Mar 1992 15:55:33 -0500
From   : Jay Sage <sage@ll.mit.edu>
Subject: Re: Questions about ZCPR 3.3

W.J.M. Nelis recently asked a number of questions about ZCPR33.

>> Is Echelon still going strong and is it possible to obtain the ZCPR3
>> manuals. If so, how do I, living in Europe, order those manuals?

   No, Echelon has been out of business for several years now.  Several
companies have taken over from them.  One of the most active, run by my wife,
is Sage Microsystems East.  You can communicate with SME through me.  SME has
"ZCPR3, The Manual" ($20) by Richard Conn and the "ZCPR33 User Guide" ($15)
written by me.  However, by far the best source of information about modern
8-bit computing is The Computer Journal, a bimonthly magazine.

>> I would like to replace BDOS as well. Is there a document in which the
>> various BDOS replacements are described and compared with one another?

   Many of them have been discussed in The Computer Journal.  I think that
most people would agree that the state of the art is ZSDOS/ZDDOS.  However,
it is a commercial product ($75, $60 if ordered along with NZCOM).  There is
probably a range of opinions as to the best choice from the non-commercial
BDOS replacements.

>> Why does GSUB20 not work with ZCPR 3.3? In some respects, I like it more
>> than ZEX.

   I can't answer this one, as I have never heard of GSUB20.  What do you
like better about it (might give us some good ideas for improvements to ZEX
or SUB)?

-- Jay Sage (author of ZCPR33)