Any scripts/tools to turn on Paula's AM/FM Channel Modulation?

[Paulee_Bow]

Yeah it doesn’t have an icon, it’s under show all files.

I understood from this script that channel 0 would modulate channel 1, so I’d lose channel 0’s output, but not sure why I’m losing channel 3, as 2 & 3 should be untouched, but hey ho.

[meynaf]

Originally Posted by xanderbeanz

I understood from this script that channel 0 would modulate channel 1, so I’d lose channel 0’s output, but not sure why I’m losing channel 3, as 2 & 3 should be untouched, but hey ho.

Indeed not exactly normal. What happens if you remove constant AM_NONE from the list ?

[Paulee_Bow]

That was going to be my next step, taking one of the AM/FM values out.
To be honest, I think I’ll chop up the program a bit, in half maybe.

I’ve found that the Amiga’s FM modulation is actually pretty much useless, just sounds like radio interference and not like exponential or linear FM/phase modulation.

So I only really want the AM part of the program.

[Leffmann]

Try this:

AM_NORMAL = 0
AM_NONE   = 8
AM_23     = 4    ; channel 2 modulates channel 3 volume
AM_12     = 2    ;         1                   2
AM_01     = 1    ;         0                   1

  move.w  #$f, $dff09e
  move.w  #$8000|AM_01, $dff09e

  move.l  4, a6
  move.l  (276, a6), a2
  lea     (92, a2), a0
  jsr     (-384, a6)
  lea     (92, a2), a0
  jsr     (-372, a6)
  move.l  d0, d2
  jsr     (-132, a6)
  move.l  d2, a1
  jsr     (-378, a6)
  rts