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- Path: sparky!uunet!mcsun!uknet!lsl!snail
- From: snail@lsl.co.uk
- Newsgroups: comp.sys.sun.misc
- Subject: Re: what is halt_and_catch_fire?
- Message-ID: <1992Aug20.150459.2324@lsl.co.uk>
- Date: 20 Aug 92 14:04:59 GMT
- References: <1992Aug14.181623.16695@exlog.com> <1992Aug17.132819.29817@zoo.bt.co.uk>
- Organization: Laser-Scan Ltd., Cambridge
- Lines: 17
-
- > I was told once that one of the unused opcodes on the original Motorola 6800
- > would put the processor into a halt mode in such a way that a particular
- > part of the chip got very hot & burned out, and this was called, jokingly,
- > halt-and-catch-fire. It may however be apocryphal.
- > Any comment out there??
-
- M6800 - crap chip, MOstek 6502 is much better.
-
- m68000 - excellent chip, but no HCF code. If only IBM had gone Motorola instead
- of Intel. Apparently IBM wanted Motorola but they couldn't deliver 100,000
- chips as fast as Intel (there was a M68000 and an Intel 8086 version of the PC
- at prototype stage). As I've said before, evolution is unfair (see uk.misc).
-
- The HCF code was in a VAX chip (or Z80??) I was told by a computer wiz about
- seven years ago.
-
- snail@lsl.co.uk
-