Mail Archives: djgpp/2007/08/07/18:00:23
X-Authentication-Warning: | delorie.com: mail set sender to djgpp-bounces using -f
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Date: | Tue, 07 Aug 2007 14:49:06 -0700
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From: | Ivor Bowden <ivorlist AT peritek DOT com>
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User-Agent: | Thunderbird 1.5.0.12 (Windows/20070509)
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MIME-Version: | 1.0
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Newsgroups: | comp.os.msdos.djgpp
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Subject: | DOS MODE command patch for CTTY w/o CTS / DSR ?
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Lines: | 15
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Message-ID: | <46b8dcb6$0$16282$88260bb3@free.teranews.com>
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NNTP-Posting-Date: | 07 Aug 2007 20:57:27 GMT
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X-Complaints-To: | abuse AT teranews DOT com
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To: | djgpp AT delorie DOT com
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DJ-Gateway: | from newsgroup comp.os.msdos.djgpp
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Reply-To: | djgpp AT delorie DOT com
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(sorry about posting under wrong subject, my news reader)
Hi, this isn't strictly a djgpp question, but I was hoping someone here
would know this. I need to boot DOS via serial port (to debug the
graphics). It works with mode "COM1: 96,n,8,1" and "ctty com1", but only
if hardware handshaking (RTS/CTS & DTR/DTS) are connected.
Unfortunately, on the system I need to debug these signals are not
available. I understand Windows versions of the MODE command support
rts, etc arguments, but legacy DOS (v3.21) does not.
So the question is, does anyone know of a way around this - a patched
MODE version, for example? Or how to poke the serial port to not use RTS
/ DTS after mode command?
Thanks,
Ivor
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