On Tue, January 1, 2013 7:34 am, firstname.lastname@example.org wrote: > > On 2012-09-24, at 20:40, Spiro Trikaliotis wrote: > >> The 154x and 157x drives can handle up to 3 simultaneous open files >> (except the directory), with one exception: A relative file counts for >> two files, making it one relative file and one sequential ("normal") >> file only. > > How does one check which channels are in use? For sequential one can read > the SAT table, which should show the (ORed with $60 - why?) sec address > aka channel That's the IEEE-488 bus command for a secondary address: $60 OR'd with the five-bit secondary address. It's probably faster for the drive to compare it to an incoming command when it includes the high three bits. G. -- The world’s only gsteemso Seattle Retro-Computing Society agitator-in-chief http://www.seattleretrocomputing.com/ Message was sent through the cbm-hackers mailing listReceived on 2013-01-01 21:00:04
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