From mboxrd@z Thu Jan 1 00:00:00 1970 From: dave@horsfall.org (Dave Horsfall) Date: Wed, 30 May 2018 11:05:32 +1000 (EST) Subject: [TUHS] Control-T (was top) In-Reply-To: <20180529184955.2FE1218C088@mercury.lcs.mit.edu> References: <20180529184955.2FE1218C088@mercury.lcs.mit.edu> Message-ID: On Tue, 29 May 2018, Noel Chiappa wrote: > I found this one: > > https://minnie.tuhs.org//cgi-bin/utree.pl?file=AUSAM/sys/dmr/dz.c > > which seems to be the one you're rhinking of, or close to it. Not sure; I'm positive that there were two drivers: the one above, and, aha! One called dz.c-elec, which was the one that I meant. Ah yes: /* * DZ-11 driver * ------------ * * OPTIMIZED dz driver to handle multiple dzs as efficiently * as possible. The efficiency is gained by disabling all * dz transmitter interrupts and using a KW11-P to generate * suitable interrupts. Carrier is supported but not Ring. * * Ian Johnstone UNSW * May 1979 */ Note this bit: #define NDZ 7 /* no. of dz-11s */ As I said, it went like a bat out of hell :-) You'd be nuts to use the interrupt per xmit char... -- Dave