I wrote:
> > [NetBSD/mac68k booter]
> > I am the maintainer of the program
>
> Are you also the maintainer of the NetBSD/mac68k Installer?
No. There hasn't really been a maintainer of it for years.
They are trying to move away from the installer, though, toward
a "sysinst" kernel based system.
> The byte at 0xcb1 holds the MMU type:
> 0: None
> 1: AMU
> 3: 68851
> 4: 68030
> 5: 68040
> 6: EMMU (PowerPC)
Didn't work for me.
1) I just had a look at some documentation,
(MacPerl's LowMem.pm, and LowMem.h from Apple's Universal Headers)
and it seems that 0x0CB2 is the address. 0x0CB1 appears unused
2) Doing this:
(* (unsigned char *) 0x0CB2) = 3;
printf("mmu=%ld\n", GetGestalt(gestaltMMUType));
in a MacOS program still outputs 0.
3) Fiddling around in emul_op.cpp, changing this line:
case M68K-EMUL_OP_PATCH_BOOT_GLOBS;
...
WriteMacInt8(r->a[4] -26, 0) // No MMU
to write 1 gives me mmu=1, but 2 gives 0,
and 3, 4 or 5 cause the Mac emulation to never boot.
(haven't investigated why)
4) I had a look at the InitMMU stuff in rom_patches.cpp,
but there are too many uncommented magic numbers there
for me to understand what it is doing!
> Maybe it's enough poke a value != 0 there after MacOS has started.
Poke? Looks like BASIC is gone, but not forgotten ;-)
--
| Nigel Pearson, ni...@in... | "Reality is that which, |
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