Re: [hatari-devel] Small bug in Hatari Falcon emulation

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 25/11/2020 à 11:08, Eero Tamminen a écrit :
> So in conclusion, the reads to non-existing ST-RAM
> areas give seemingly random data.
>
> Could you send results from scanning the memory
> with byte & word widths?  I could try generating
> some word/byte/nibble value histograms out of it
> to see whether there are any patterns, either as
> a whole, or in relation to the address.
>
> (If there are, those would need to be verified
> then with data from some other Falcon.)

Hi

see my other mail, I think that's useless.

on STF/STE the pattern depends on what was last seen on the bus for the 
latest memory access. So most of the time it will be some bits from the 
current 680x0 opcode used to run the current program.

As roger told that value is not always 0xff it's very likely to be bus 
based, so you won't find any pattern.

Nicolas