Re: booting macworks

From: gilles fetis <gilles.fetis_at_email.domain.hidden>
Date: Tue, 07 Nov 2006 15:00:21 -0800

all macworks versions I tried (from prerelease to XL 3.0) get the same result.
I'm now disassembling to understand were the emulator fails but the assembly code is not very compact. probably the code is compiled from an higher level language.

Lisa OS do not boot at all. The boot sector is read, then the disc is unclamped...

Does someone have good images of macworks discs, the one I found are bad for the tags CRC checksum.

James MacPhail a écrit :

> >MacWorks get a Bus error while accessing to 0x410000 while only the 1st
> >16 segments of context 0 are initialized.
> IIRC, MacWorks XL 3.0 and earlier do not map the address space above the
> Macintosh ROM image (except for I/O), so it would be normal to generate a
> bus error for an access to 0x410000.
> I think I recall that it also did not map the space between the end of
> (Mac) RAM and the start of (Mac) ROM, so it may be that only 16 segments
> needed to be changed from the configuration left by the self-test.
> MacWorks Plus/II alias the whole address space (as much as possible) to
> help deal with problematic applications, but I suppose that may make things
> more complicated for an emulator.
> HTH,
> James

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