Date   : Sun, 21 Apr 1985 05:02:43 GMT
From   : Heiby <netnews%wnuxb.uucp@BRL-TGR.ARPA>
Subject: file tran CP/M-80 to MS-DOS problem

I have a CP/M-80 system (Apple II with Microsoft Softcard, about 4 yrs
old) and an AT&T PC 6300 running MS-DOS (new).  I would like to send some
of my data files from the Apple to the 6300.  I find that my CP/M system
has a problem in the use of MDM712 and MDM740 (which I just downloaded
from CompuServe).  I can receive files just fine.  I have a problem with
some files when I try to send them in Checksum mode.  None of the systems
to which I have access have CRC mode, so I am unable to test that.

What happens is that (on some files) the receiving end believes that the
transfer has completed prematurely.  For each file that gives me trouble,
there is one consistent spot where this always occurs.  The spot is different
for different files.  I have encountered the same problem now in sending
files to the MS-DOS system, and to a Unix System V with both umodem (2
versions) and uc (2 versions).  This is why I suspect my Apple's software.

I have a relatively short test case (about 4K) that I can send out to
someone who would like to check to be sure that it is MDM7 and not
something peculiar that I have done to my overlay or hardware.

I would be grateful of software for MS-DOS that supports CRC checksum,
in case that will solve my problem.  Another solution would be working
file transmission software for the Apple (modem2 compatible).  Another
solution would be CP/M Kermit, configured for an Apple II with Mountain
CPS card.  If all else fails, raw CP/M Kermit, which I would hack, would
be helpful.

Thanks.  I can't think of anything else I can do.
-- 
Ronald W. Heiby / netnews@wnuxb.UUCP | unix-request@cbosgd.UUCP
AT&T Information Systems, Inc., Lisle, IL  (CU-D21)