Re: [hatari-devel] Truncated PC address value with code running in TT-RAM?

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Le 29/03/2019 à 23:42, Eero Tamminen a écrit :

After some debugging I found out why disassembly didn't work with LILO.
It wasn't actually related to LILO, but code running in TT-RAM.

WinUAE core seems to now return 24-bit values for M68000_GetPC() macro,
although I've disabled 24-bit mode.  With code running in TT-RAM,
M68000_GetPC() returns values pointing to ST-RAM addresses (which contents happen to be zeroed).

Adding TT-RAM offset to return PC value, shows the correct disassembly:
     disasm "pc + 0x1000000"

Even WinAUE core function for showing register values shows wrong
address for the next PC.

Because things still *run* correctly, and I'm pretty sure M68000_GetPC()
returned earlier correct 32-bit values for code running in TT-RAM, it
seems that CPU core PC register variable has changed into some kind
of memory segment offset value.



I will have a look ; which cpu were you using ? Is it the same if you use internal disassembler or the external one ?

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