Path: 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: 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 >>>>> 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