maxtherabbit wrote on 2023-10-01, 21:12:
But it seems you already confirmed the 4.13 on the AWE cards is the same as the other SB16
not exactly true - I confirmed V4.13 on CT3990 and CT3980 is the same and it's the same with the old publicly released dump made in hardware, but maybe that hardware dump was obtained on either CT3990 or CT3980 card - as far as I know we don't know the card model from which the hardware dump was made, at the same time here:
Re: The Soundblaster DSP project
@georgel reported a little different V4.13 and maybe after someone more knowledgeable analyze the difference the "block" that differs will be exactly how pins role is assigned according to the PCB layout. So, potential source of the NMI error could be that.
[EDIT] in other words for cards like CT2760 maybe some additional changes will be needed to adopt V4.13. I guess when my ICs and socket arrives more will become clear (unless someone do it before me) and test patched V4.13 on CT3990/CT3980 where the DSP is now confirmed the same as the source one used to make the patched versions.