Offset Meaning
0 pointer to fill code
4 pointer to overrun fixup code
8 pointer to linear-to-log conversion table
12 pointer to log volume scale table
The volume scale table can be used to scale samples to the current volume.
Channel handler fill code
=> R8 = sample period?
R9 = pointer to SCCB ?
R10 = pointer to end of DMA buffer?
R11 = number of channels
R12 = pointer to DMA buffer to store data in
<= no registers need preserving
These values have been found by example only. It is the job of the channel handler to call the voice generators as required.
Channel handler overrun fixup
This code is never called, but for safety you should make this point to MOV pc,link which will return immediately if called.
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