Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!spool.mu.edu!munnari.oz.au!uniwa!andreww From: andreww@uniwa.uwa.oz (Andrew John Williams) Newsgroups: comp.sys.amiga.hardware Subject: Re: Breaking through the chip-bus barrier? Message-ID: <1991May27.005609.17022@uniwa.uwa.oz> Date: 27 May 91 00:56:09 GMT Article-I.D.: uniwa.1991May27.005609.17022 References: <1991May21.081806.2668@kberg.se> <1991May23.045536.1208@uniwa.uwa.oz> <1991May23.121032.31010@kuhub.cc.ukans.edu> <1243@cbmger.UUCP> Organization: University of Western Australia Lines: 14 >But I fear VRAMs are not possible, because Denise not only fetches the >normal video data from Chip-RAM (this could indeed also be taken from >VRAMs), but it also must display sprites and fetch their data from quite >different places, so the VRAM mechanism is impossible for this. Also all >the copper actions (copper list fetched from Chip-RAM!) are certainly >at least difficult to implement on VRAM/Denise combinations. Surely sprites could be read out as normal (how much bandwidth could they possibly use) and mixed in with the signal after it leaves the VRAMs. Copper operations could get interesting - I'll agree with you there. John West (stealing Andrew's account) where have all the fish gone?