Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site iuvax.UUCP Path: utzoo!linus!decvax!harpo!ihnp4!inuxc!iuvax!saj From: saj@iuvax.UUCP Newsgroups: net.lang Subject: Re: Re: Self-modifying code and CDC Fort - (nf) Message-ID: <118@iuvax.UUCP> Date: Wed, 15-Feb-84 15:11:25 EST Article-I.D.: iuvax.118 Posted: Wed Feb 15 15:11:25 1984 Date-Received: Thu, 16-Feb-84 06:07:01 EST Sender: saj@iuvax.UUCP Organization: Indiana U, Bloomington Lines: 12 #R:azure:-248800:iuvax:11800010:000:472 iuvax!apratt Jan 12 20:59:00 1984 You better believe there were some COMPASS hacks (CDC assembly code) who took advantage of the "bug" you mention -- once a word is in cache, you can modify it. It would be just like one fellow I know to do that. His loops always (well, almost always) fit in 15 words (I think that was the number), and he never wasted the 15 bits which a jump instruction at the beginning of a word wastes. Talk about slick, tight code! -- Allan Pratt ...ihnp4!inuxc!iuvax!apratt