MkII wrote:
> I'm looking for an accurate pitch to tone registers value translation table
> for PSG.
Do you mean, how values you can use in (in case of use channel A)
register 0 and 1?
If yes, you can use de following:
Fclock
Freq=--------------
16*(r0+r1*256)
where Freq mean the frequency you wish
Fclock mean the CPU's clock (3579545 Hz on TR)
r0 and r1 is register 0 and 1 of the PSG
> What's the recommended method to setup PSG for 4-bit PCM playback? Setting
> the lowest pitch? Disabling both noise & tone in the mixer?
Ricbit can tell you more details about that, but in the simple way:
-disable noise
-set R0 and R1 (channel A) with 0
-drop the sample data in R8 (channel A)
only these 3 things. Is it hard?? ;-)
Note that the mixer values has no effect, you can disable or enable the
channel, the sample will be played anyway.
Regards
Alex Mitsio Sato
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