Path: utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!nosc!ucsd!ucsdhub!jack!crash!mkao From: mkao@crash.cts.com (Mike Kao) Newsgroups: comp.sys.apple Subject: ZIP Chip compatibility problems Summary: It's incompatible with some //e's! Message-ID: <3193@crash.cts.com> Date: 11 Jul 88 22:36:35 GMT Reply-To: mkao@crash.CTS.COM (Mike Kao) Organization: Crash TS, El Cajon, CA Lines: 30 Zip Technologies really pisses me off. After waiting since the September, '87 AppleFest, I FINALLY received my 2 Zip chips. Guess what? It doesn't work properly with my computer! Let me explain the situation... I bought 2 chips, 1 for me home computer and 1 for the //e in our store. Both chips work fine on the //e at the store, but neither works correctly on mine. My computer is an enhanced //e, Rev. B motherboard. The other is one of the newer //e's, but not as new as the platinum models. As far as I could tell, the only noticeable difference was that this one had a CF ROM in place of the CD and EF ROM's on my machine. I'm not sure if the motherboard was later than B, though. At any rate, whenever I installed the chips on my older //e, the acceleration works fine, but all the Control-Reset sequences (including those used in conjunction with Apple keys) are screwed up. The worst thing is that SOMETIMES they will work: Control-OpenApple-Reset only SOMETIMES re- boots. I have yet to get Control-ClosedApple-Reset self-test NOT to freeze up. All of these "normal" //e features work fine on the newer //e equipped with the same chips. I have also taken EVERY peripheral out of my //e, even replaced my current Applied Engineering power supply with Apple's original -- all to no avail. Does anyone have any idea what might be wrong? Is anyone from Zip listening? -- To insure my reception of any replies, please respond via e-mail. Thanks! -- Mike Kao UUCP: {cbosgd, hplabs!hp-sdd, sdcsvax, nosc}!crash!pnet01!mkao ARPA: crash!pnet01!mkao@nosc.mil INET: mkao@pnet01.CTS.COM