Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!dali.cs.montana.edu!ogicse!intelhf!agora!nesbbx!billsey From: nesbbx!billsey@agora.UUCP (Bill Seymour) Newsgroups: comp.sys.amiga.hardware Subject: Re: 14 Mhz Hack Message-ID: <19300ae3.ARN012d@nesbbx.UUCP> Date: 24 May 91 07:01:55 GMT References: <1991May13.081500.7980@rulway.LeidenUniv.nl> <1991May16.093917.28260@rulway.LeidenUniv.nl> <21810@cbmvax.commodore.com> Reply-To: nesbbx!billsey@agora.UUCP Followup-To: comp.sys.amiga.hardware Organization: NES, Inc. Lines: 36 In article <21810@cbmvax.commodore.com>, Dave Haynie writes: > In article billc@cryo.UUCP (William J. Coldwell) writes: > >In article <1991May16.093917.28260@rulway.LeidenUniv.nl> breemen@rulcvx.LeidenUniv.nl (E. van Breemen) writes: > >>In article billc@cryo.UUCP (William J. Coldwell) writes: > > >>>manufacturer's item] when doing [CPU or DMA action]. This in-turn causes > >>>a rush to the [name] board layout package for the changes necessary to make > >>>the [your product] work with the latest rev, reducing the meager profit > >>>margin." ;-) > > >>This is true if you are pushing your board to the edge of performance. You > >>can do that by ignoring the specs of Commodore. It is to be expected that > >>there are then some incompatibilities. > > 99.9% of the hacks done that violate Commodore specifications are done strictly > out of designer laziness, not to "push your board to the edge". In fact, the > only one I can think of who has ever pushed the limits for performance reasons > is Bill Seymour, with the "PA". It has the option of talking to A2000 ROM at > full speed, rather than dropping down to the normal 560ns cycle a 7.16MHz 68000 > gives you. And that was a calculated risk, not some dumb hack. Well, I'm afraid I can't take the credit here... That's actually Steve Fordice and Kelly MacArthur who did the Processor Accelerator design. I only provided technical support and such for them then... I can't remember who it was that thought of running the ROM at 14MHz, but it certainly made a difference! > -- > Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests" > {uunet|pyramid|rutgers}!cbmvax!daveh PLINK: hazy BIX: hazy > "That's me in the corner, that's me in the spotlight" -R.E.M. -Bill Seymour nesbbx!billsey@agora.uucp or nesbbx!billsey@agora.rain.com ***** American People/Link Amiga Zone Hardware Specialist NES*BILL ***** Bejed, Inc. NES, Inc. NAG BBS NES BBX BBS Home Sometimes (503)281-8153 (503)246-9311 (503)656-7393 (503)640-9337 (503) 640-0842