I somehow broke audio in Startropics 1 and 2. I just get a weird, repeating, non-discernable noise. All other games work fine as far as I can tell. Do these games do anything special?
The rest of the game appears to work fine, just the audio is broken.
Broken audio in Startropics 1 & 2
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Re: Broken audio in Startropics 1 & 2
Noise is coming from the Noise channel. Go figure.
Typical APU writes are:
$10 = $00
$11 = $00
$17 = $40
$15 = $0f
$15 = $00
$11 = $50
This part repeated at the start of every frame and no other writes.
$15 = $00
$15 = $00
$15 = $08
$0c = $00
$0e = $01
$0f = $08
$15 = $08
$0c = $00
$0e = $01
$0f = $08
$15 = $00
Typical APU writes are:
$10 = $00
$11 = $00
$17 = $40
$15 = $0f
$15 = $00
$11 = $50
This part repeated at the start of every frame and no other writes.
$15 = $00
$15 = $00
$15 = $08
$0c = $00
$0e = $01
$0f = $08
$15 = $08
$0c = $00
$0e = $01
$0f = $08
$15 = $00
Re: Broken audio in Startropics 1 & 2
Figured it out. It has something to do with disabling/enabling WRAM.
Re: Broken audio in Startropics 1 & 2
Docs say that it is not MMC3, but MMC6. That explains it. I'll hit this up later tonight.