[info/bug?][mtx] 1-bit sound support?

[Fabrizio-Caruso]

I have not understand if 1-bit sound is supposed to work in the MTX target as the doc is ambiguous about it (it is shown in the table but not in the target doc: https://github.com/z88dk/z88dk/wiki/Platform---Memotech-MTX)

Anyway, if I try it I get a continuous sound. So it seems broken.

[suborb]

This is the old sn76489 issue. In theory there's a 1 bit emulation layer over the sound chip. In practice it only works for a very few machines.

As a result, it's marked as not present in features.h: https://github.com/z88dk/z88dk/blob/master/include/features.h#L2223 - I'll update the table.

[Fabrizio-Caruso]

I see:

__HAVE_PSG_SN76489 1

Does it mean that I should be able to produce some sounds with the PSG_SN76489 specific API's ?

I have not succeeded so far. I can produce a minimal example but I am not sure I am using the API's correctly.