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- Path: sparky!uunet!olivea!apple!mumbo.apple.com!gallant.apple.com!noah
- From: noah@gallant.apple.com (Noah Price)
- Newsgroups: comp.sys.mac.hardware
- Subject: Re: How can I tell if IIci has Cache Card installed?
- Message-ID: <1992Aug17.004406.7033@gallant.apple.com>
- Date: 17 Aug 92 00:44:06 GMT
- References: <1992Aug5.124252.15429@news.acns.nwu.edu> <70869@apple.Apple.COM>
- Organization: Apple Computer Inc, Cupertino, CA
- Lines: 17
-
- In article <70869@apple.Apple.COM> grobbins@Apple.COM (Grobbins) writes:
- >If for some bizarre reason you do need to determine if a cache card is
- >installed in a IIci, you can check for it by accessing the cache card
- >memory; if the card is not installed, the access will cause a bus error.
-
- Just an aside -- while this will work to detect Apple's card (which I
- think is what the original poster had), not all IIci cache cards use
- that address space. On Apple's card, it's just used for testing, to
- access the cache data and tag SRAM directly. On another vendor's cache
- card, this address space may not be used, so you might get a bus error
- even if a card is installed.
-
- noah
-
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