Path: utzoo!utgpu!water!watmath!clyde!bellcore!faline!ulysses!allegra!princeton!udel!rochester!cornell!uw-beaver!tektronix!reed!kamath From: kamath@reed.UUCP Newsgroups: comp.sys.apple Subject: Re: ][+/e extended memory access Keywords: apple memory Message-ID: <8121@reed.UUCP> Date: 23 Jan 88 21:09:51 GMT References: <3456@ihlpf.ATT.COM> Reply-To: kamath@reed.UUCP (Sean Kamath) Organization: Reed College, Portland OR Lines: 35 Posted: Sat Jan 23 16:09:51 1988 In article <3456@ihlpf.ATT.COM> dennis@ihlpf.ATT.COM (Dennis Dale) writes: >I own a ][+ system with an extended memory board (128K Saturn) in it. >I find that the newer programs requiring more than the on-board 64K >of memory do not recognize this type of memory board. They seem to >require the memory access provided by the 'weird' slot 3 on a ][e. >Does anyone know how to make the necessary hardware 'hacks' to my board >to make it compatable? I wouldn't mind making major modifications >to either my Saturn board or my mother board to make it work. It would take *MAJOR* mods to do it. Like, redo the motherboard. >I could be wrong, but it seems like the Applied Engineering people made it >work with their Ramfactor board, it must be somehow do-able. I don't >need double-hires graphics or an 80 column board right now, just the >compatable memory. What the Ramfactor (and Apple's board) do is they serial bytes to the extended memory, much like a serial card. The Saturn is a bank switched memory card, much like the aux card on the //e. Thus, even though they do the same thing as the //e-only cards, they do it quite differently. Since the RamFactor has it's own ROM to do the serialing, programs that use that method don't recognize it either. I know it sounds like you in a bind, and you are. I hope you can work something out. Maybe sell the Saturn and get a RamFactor. >Dennis Dale >(ihnp4!ihobp!dennis) Sean Kamath -- UUCP: {decvax allegra ucbcad ucbvax hplabs ihnp4}!tektronix!reed!kamath CSNET: reed!kamath@Tektronix.CSNET || BITNET: reed!kamath@Berkeley.BITNET ARPA: tektronix!reed!kamath@Berkeley reed!kamath@hplabs US Snail: 3934 SE Boise, Portland, OR 97202 (I hate 4 line .sigs!)