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Aucbvax.2679 fa.unix-wizards utzoo!decvax!ucbvax!unix-wizards Thu Aug 13 16:32:45 1981 RX21 driver >From JNC@MIT-XX Thu Aug 13 16:22:14 1981 I found a bug in the UNIX driver for an RX21 (RXV21 actually, is was on an 11/23) which I thought I'd propogate. The macro TRWAIT() should read:

while (ptcs->lobyte >= 0)

It currently has just a '>' (it's trying to see when the high bit turns off) and this causes problems becuase on a fast processor the first time you look at the register the controller won't let you and returns a 0, which has (obviously) undesireable results. Boy, was that a bitch to find.... Noel -------

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