Article View: comp.sys.amiga.tech
Article #5022Re: 2 meg Agnus in Amiga 2000
From: Pekka Pessi
Date: Sat, 25 Aug 1990 15:32
Date: Sat, 25 Aug 1990 15:32
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>>>>> On 25 Aug 90 05:16:09 GMT, uzun@pnet01.cts.com (Roger Uzun) said:
> I believe some signals that were internal to the old agnus have been brought
> out or vice versa, so it was said that additional hardware would be required,
> you cannot just redirect the pinout of the new agnus to sockets on the old
> (2000) motherboard, I imagine you have to cut a trace on the motherboard
> to get at some/insert some required signal.
I think that XCLK signal can be ignored if you do not use
Genlock. Additional circuitry in A3000 consists of 2 PALs and
3 FFs, but I think it can be reduced to a couple TTL:s if you
do not want 32-bit interface to CHIP-memory.
--
ppessi@niksula.hut.fi ! M{ kaunehin oon
tel +358 0 455 4757 ! ja tied{nkin sen
JMT 11E122; 02150 Espoo ! ja siks' m{ Mua aina aattelen
- Pekka Pessi
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uunet!samsung!usc!snorkelwacker!bloom-beacon!eru!luth!sunic!tut!funic!santra!santra!ppessiReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uunet!samsung!usc!snorkelwacker!bloom-beacon!eru!luth!sunic!tut!funic!santra!santra!ppessi From: ppessi@niksula.hut.fi (Pekka Pessi) Newsgroups: comp.sys.amiga.tech Subject: Re: 2 meg Agnus in Amiga 2000 Message-ID: <PPESSI.90Aug25173214@conan.hut.fi> Date: 25 Aug 90 15:32:14 GMT References: <4097@crash.cts.com> Sender: news@santra.uucp (Cnews - USENET news system) Organization: Helsinki University of Technology, Finland Lines: 18 In-Reply-To: uzun@pnet01.cts.com's message of 25 Aug 90 05:16:09 GMT