Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!tut.cis.ohio-state.edu!zaphod.mps.ohio-state.edu!mips!apple!motcsd!xdos!doug From: doug@xdos.UUCP (Doug Merritt) Newsgroups: comp.sys.amiga.hardware Subject: Re: Amiga 1000 + Apple 80SC hard drive? Message-ID: <646@xdos.UUCP> Date: 2 Feb 90 16:53:33 GMT References: <16446@boulder.Colorado.EDU> Reply-To: doug@xdos.UUCP (Doug Merritt) Organization: Hunter Systems, Mountain View CA (Silicon Valley) Lines: 23 In article portuesi@sgi.com (Michael Portuesi) writes: >Supra also makes a SCSI interface, but I don't know much about it. I I have a Supra on my A1000, and it works fine. The formatting software is very flexible; from what I've seen (my own Wren III that was not in the predefined list) & heard you can talk to any SCSI drive, not just some predefined ones. It's not DMA, but I was just looking for something that people thought had a good chance of working with my old Pacific Cypress 2 Meg expansion, and the Supra got the most votes. Sure enough, the two work fine together. I don't even have PAL grounding mods. I'm a little unclear as to whether any of the still-extant A1000 SCSI interfaces support DMA anyway, but if they do, it seems clear that DMA gives better performance than non-DMA, Supra claims notwithstanding. On the other hand I've heard that DMA controllers can conflict with e.g. audio DMA. Perhaps that's just a question of correctly prioritizing tasks? Doug -- Doug Merritt {pyramid,apple}!xdos!doug Member, Crusaders for a Better Tomorrow Professional Wildeyed Visionary