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- From: behrenss@Informatik.TU-Muenchen.DE (Soenke Behrens)
- Subject: Re: Turbo IDE Card description
- References: <la46828@pro-cajun.cts.com> <1992Dec11.134016.8827@Informatik.TU-Muenchen.DE> <1992Dec11.181147.3239@news.columbia.edu> <1992Dec11.215121.28415@athena.mit.edu>
- Sender: news@Informatik.TU-Muenchen.DE (USENET Newssystem)
- Organization: Technische Universitaet Muenchen, Germany
- Date: Sat, 12 Dec 1992 04:58:02 GMT
- Message-ID: <behrenss.724136282@hphalle6>
- Lines: 30
-
- pbauer@athena.mit.edu (Paul H Bauer) writes:
-
- >>>The ROM on the card is highly optimized for maximum throughput, using 65816
- >>>commands in the GS version. You can order both ROMs (if I recall correctly,
- >>>a ROM costs $10), so if you want to swap machines (which you don't do every
- >>>day normally, anyway ;), you just exchange the ROM and that's it.
- >> Although, in theory, you should be able to use the //e version
- >>in both machines. That way, you wouldn't have to swap ROM chips.
- > Does this mean it is going to have problems with a 2e with the
- >zip 8000 or a GS with a TW or Zip card? If we have any other hardware
- >configuration are we going to have to get special ROM's for these???
-
- A //e with the zip 8000 can't have any DMA device in it. In that case, you'd
- be better off with the predecessor of the Turbo IDE, which does not use
- DMA (and is therefore cheaper :). Of course, you could also disable DMA on the
- Turbo IDE card. This is not the card's fault, the ZIP chip and DMA are a
- no-no :).
-
- As for the GS: It works fine with either TWGS or ZIP. No problem at all.
-
- Again, the two different ROMs do reflect the fact that there are two
- different processors, nothing more. The GS ROM uses 16-bit instructions for
- speed. The //e ROM doesn't.
-
- Soenke
- --
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