Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!apple!tahoe!jimi!arrakis!alfter From: alfter@nevada.edu (SCOTT ALFTER) Newsgroups: comp.sys.apple2 Subject: Re: another IIe question Message-ID: <1991Apr8.204833.16889@nevada.edu> Date: 8 Apr 91 20:48:33 GMT References: Sender: news@nevada.edu (News Administrator) Distribution: comp.sys.apple2 Organization: University of Nevada, System Computing Services Lines: 29 In article fitz@frc2.frc.ri.cmu.edu (Kerien Fitzpatrick) writes: >Can I purchase a SCSI card for an Apple IIe? Of course. I even have an Apple DMA SCSI card in my IIe to prove it (hooked up to a Conner CP-340 homebrew HD). BTW, is it just me, or does DMA by itself not make a whole lot of difference in the IIe? ProDOS 8 thinks the SCSI card is a SmartPort device, so you can only transfer 512 bytes at a time. I suppose GS/OS accesses files differently, but when's the last time you saw GS/OS running on a IIe? :-) Apple's card is fast enough for most purposes (not to mention that it's compatible with a greater variety of SCSI devices), but if you need more speed, you might be better off spending the extra $$$ for the RAMFast SCSI card (which probably provides more of a performance boost to ProDOS 8 than to GS/OS). One more question: which 8-bit accelerators (if any) will work with DMA on? If none of them will work properly, which combination provides faster disk access: 1 MHz clock and DMA, or an accelerated clock rate and no DMA? Sorry I created more questions than I answered, but these questions have been nagging me for some time and nobody's seen fit to give me an answer...:-) Scott Alfter-----------------------------_/_---------------------------- Support Operation Apple Storm! / v \ Apple II: Internet: alfter@uns-helios.nevada.edu ( ( the power to be your best! GEnie: S.ALFTER \_^_/