Subject: Re: Serial port madness
To: Cameron Kaiser <email@example.com>
From: Hauke Fath <hauke@Espresso.Rhein-Neckar.DE>
Date: 06/02/2002 14:10:06
At 17:51 Uhr -0700 31.5.2002, Cameron Kaiser wrote:
>On 1.5.2, I'm setting up some serial ports for several Commodore 64s to
>connect to effectively as dummy terminals, but I can't seem to get hardware
>flow control to work (I know the interface cartridge the 64 is using properly
>handles RTS/CTS because it does it correctly with the modem). I've run
>ttyflags on the port and bounced init, and I can log in fine, but there's
>flow overruns all over the place. Suggestions? The entry in /etc/ttys is
>tty00 "/usr/libexec/getty std.57600" dumb on secure rtscts local
The Macintosh DIN 8 connectors have only one handshake output line (HSKO)
that can either be used for line control (DTR) or flow control (RTS).
The 'rtscts' on NetBSD/mac68k is a lie in that there is no 'rts'
functionality, but 'dtr' flow control. Use 'dtrcts' in place of 'rtscts'
and make sure you use a cable wired for hardware handshake (RTS shorted
with DTR on the 25 pin connector, especially).
If you are interested in details, search the mailing list archives; this
has been rehashed a few times on the lists.
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