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From: waldron.Wbst@XEROX.ARPA
Newsgroups: net.micro.cpm
Subject: 8 bit data in Mex update
Message-ID: <1603@brl-tgr.ARPA>
Date: Wed, 15-Jan-86 09:17:53 EST
Article-I.D.: brl-tgr.1603
Posted: Wed Jan 15 09:17:53 1986
Date-Received: Fri, 17-Jan-86 06:28:27 EST
Sender: news@brl-tgr.ARPA
Lines: 26

>Does anyone know of a way to patch Mex to allow 8 bit data to be passed
to the >terminal.  I would like to have the remote host send graphics
characters to the >screen but Mex seems to AND off the 8th bit.  Turning
on DEBUG shows that valid 8 >bit graphics characters are being sent but
in normal terminal mode they get >stripped.

>Thanks,

>Brian 

To all those who responded, thank you.  To all those who mentioned
STAT FILTER OFF, I have been running this way since day ONE.  STAT
FILTER OFF controls the passage of data values from 0 to 1F hex. I
have no problem with those.  Values from 80 to FF hex are the
problem.  They come through with the 8th bit reset.  In other words,
ANDed with 7F hex.  I have comfirmed, using a very simple dumb terminal
program, that neither BDOS nor BIOS interferes with 8Bit (0 - FF hex)
data.   There are  20 some AND 7F instructions in Mex.  Without
source it's pot luck but I will try the hard way to determine which
AND 7F is the culprit.

Thanks again to all who responded.  I will post results when they are
available.

Brian 
Waldron.wbst@Xerox.arpa