Date: Wed, 25 Aug 1999 11:20:25 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: "Leif Neland" <leifn@neland.dk> Cc: "Gregory Sutter" <gsutter@pobox.com>, <freebsd-hackers@FreeBSD.ORG> Subject: Re: Sv: K6/3 on 3.2-STABLE - PROBLEM SOLVED Message-ID: <199908251820.LAA14122@apollo.backplane.com> References: <19990824132943.B11107@proxydev.inktomi.com> <199908242133.OAA18621@apollo.backplane.com> <19990824154432.A21013@proxydev.inktomi.com> <19990825020108.B20512@forty-two.egroups.net> <007c01beef22$859036a0$0e00a8c0@neland.dk>
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:Back around 1980, I overclocked my 5MHz z80 to 6MHz. It worked without problems, except that for-next loops in comal didn't exit as expected. That was also reproducible...
:
:Leif
In the early 90's I regularly ran 10 MHz 68000's at 20 MHz (which was
about the limit the dynamic ram at the time could handle).
When motorola started phasing out the DIP version of the 68000 after
many years of good service, one of their big customers noted that Motorola
had updated the process many times but had never updated the timing specs
during virtually the entire life of the product, and wanted to know how
fast the chip could actually be run.
So Motorola tested it. I believe the 12.5 MHz spec'd chip tested
to 80 MHz. Not bad!
-Matt
Matthew Dillon
<dillon@backplane.com>
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