| Re: [hatari-devel] EmuTOS boot freeze with Hatari git on 040/060 + MMU |
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Hi,
On 14.3.2024 23.51, Nicolas Pomarède wrote:
stupid bug spotted and fixed, please try the attached patch on current
devel sources, it should use the correct MFP vector in case of interrupt
(iack_cycle() result was incorrectly saved in 'nr' instead of
'vector_nr', as in Exception_mmu030() )
This fixes the EmuTOS 040 / 060 + MMU freeze on boot.
When CPU caches & prefetch are disabled [1], it also gets Linux booting
both on 040 & 060, which hasn't worked for a long time!
(I can understand how your patch fixes spurious interrupts for 040 case,
but not how the bug caused Linux to use non-implemented opcodes for 060
case...)
- Eero
[1] If CPU caches & prefetch are enabled, very early on boot Linux
double bus errors on 060, and freezes on 040. Same happens also with
v2.4.1 though, so it's not a regression.