ggs@ulysses.homer.nj.att.com (Griff Smith) (08/11/87)
Index: /sys/vaxmba/mt.c 4.3BSD Description: The autoconfigure code for the TU78 tape device driver sometimes causes an unsolicited "done" interrupt - harmless, but annoying. Repeat-By: Try it on a processor faster than a VAX 11/785. Fix: The following is my best guess - increasing the delay time seems to help: *** /source/sys/vaxmba/mt.c Thu Jun 5 04:32:57 1986 --- /sys/vaxmba/mt.c Tue Aug 11 14:50:13 1987 *************** *** 154,160 **** /* Cancel the interrupt, then wait a little while for it to go away. */ mtaddr->mtas = mtaddr->mtas; ! DELAY(10); splx(s); return (rtn); } --- 155,161 ---- /* Cancel the interrupt, then wait a little while for it to go away. */ mtaddr->mtas = mtaddr->mtas; ! DELAY(100); splx(s); return (rtn); } -- Griff Smith AT&T (Bell Laboratories), Murray Hill Phone: 1-201-582-7736 UUCP: {allegra|ihnp4}!ulysses!ggs Internet: ggs@ulysses.uucp