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- Newsgroups: comp.sys.mac.programmer
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!caen!destroyer!gumby!kzoo!k044477
- From: k044477@hobbes.kzoo.edu (Jamie R. McCarthy)
- Subject: Blat
- Message-ID: <1992Nov21.171242.24384@hobbes.kzoo.edu>
- Organization: Kalamazoo College
- References: <1992Nov19.180531.4442@netcom.com> <04Mv02u32cgm01@JUTS.ccc.amdahl.com> <1992Nov20.225517.15649@netcom.com>
- Date: Sat, 21 Nov 1992 17:12:42 GMT
- Lines: 27
-
- creiman@netcom.com writes:
- >rla20@duts.ccc.amdahl.com (Roger Allen) writes:
- >>What are Xap and Blat? I haven't heard of these before.
- >
- >Blat uses protected memory mode of the MMU to protect the low level
- >vectors. Basiclly, a fool-proof EBBE. This power has a price: you
- >can't use VM with it.
-
- Nor is it compatible with the "IIsi, IIci, LC or any computers using
- that ROM...040 class machines...or TMon Pro" (from the Release Notes
- file). Alas!
-
- Bo3b writes: "If the incompatibility problems make it useless for you, I
- would be interested to know that as well. Given the difficulty of writing
- code of this form, we have judged it to not be worth the time to make it
- work in every situation."
-
- I, for one, would love to use this tool on my IIci. Imagine an EBBE
- that traps not only _reads_ from 0, but _writes_ to them--on the very
- instruction where the offense occurs! And not only location 0, but the
- next 255 bytes as well. This would be quite nice.
-
- Alas.
- --
- Jamie McCarthy Internet: k044477@kzoo.edu AppleLink: j.mccarthy
- "I don't think we should have to have them wandering the streets
- frightening women and people." - Pat Buchanan
-