Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!rutgers!bellcore!tness7!tness1!sugar!ficc!peter From: peter@ficc.UUCP (Peter da Silva) Newsgroups: comp.arch Subject: Re: Risky instructions (WAS: Re: RCA 1802 (was: PC history)) Summary: Halt and catch fire. Keywords: history, pc, RCA, 1802 Message-ID: <1239@ficc.UUCP> Date: 9 Aug 88 19:51:49 GMT References: <5458@ecsvax.uncecs.edu> <1876@looking.UUCP> <753@applix.UUCP> <5440@june.cs.washington.edu> Organization: SCADA Lines: 13 Ah yes. If anyone out there has a Compucolor-2 (a Z-80 based PC from the early '80s) you can implement HACF from Basic: 10 FOR I = 1 TO 255: OUT 6,I: NEXT I don't know what port 6 did, but I suspect that it had something to do with the power supply. In any case the machine would start overheating and you had to pull the AC cord out to prevent it smoking. -- Peter da Silva, Ferranti International Controls Corporation, sugar!ficc!peter. "You made a TIME MACHINE out of a VOLKSWAGEN BEETLE?" "Well, I couldn't afford another deLorean." "But how do you ever get it up to 88 miles per hour????"