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SubjectRe: NeoGeo bios z80 check Reply to this message
Posted byAamirM_Nugen
Posted on09/21/07 00:02 AM


As far as I remember you need to return 1 when read from address 0x320000. I think thats how removed the "Z80 Error" message.

stay safe,


> To answer my own question for anyone who's curious:
> The bios will be happy with just the Z80. No ym2610 is needed.
> > The neogeo bios does a test of the Z80, and hangs with an error message if the
> > Z80 behaves improperly.
> >
> > How much of the Z80 needs to be emulated to pass this test? Will the Z80 pass
> > on its own (with the ym2610 stubbed out), or does it need parts of the ym2610
> as
> > well?
> >

Entire Thread
Subject  Posted byPosted On
*NeoGeo bios z80 check  masterzog09/19/07 06:33 PM
.*Re: NeoGeo bios z80 check  masterzog09/20/07 01:41 PM
...Re: NeoGeo bios z80 check  AamirM_Nugen09/21/07 00:02 AM
...*Re: NeoGeo bios z80 check  masterzog09/21/07 02:48 PM