Sound hardware seems similar to HuC6280 / Konami SCC.

Dev tools: gccVB, mednafen
Info: http://www.planetvb.com

Will probably only have the 2 square waves, the triangle wave and the noise channel to begin with.
Will probably use asm6.

The effect-handling code needs to be merged over from the PC-E playback lib, which handles this correctly.

The playback lib currently sets LFO_CTRL:7 to enable the LFO. It should be clear at all times, and only LFO_CTRL:0,1 should be modified to set the modulation level.

They don't check the right jump condition.

Need to write a playback library for POKEY and generate SAP files.

@EN1 = {0 3 4 | -7 3 4}

A t125 v10 o4 l16 EN1 cdef ENOF cdef

A playback library will need to be written for the HuC6280, as well as some additions to the compiler.

The first version will probably only support the basic stuff; the standard 32-byte waveforms, white noise (channels E & F), and FM LFO (channel A).

@mv will be used for controlling the master volume.

In husic there is a # command. It is used as follows: c#2d4 It plays a quarter note. The first two frames have the pitch of 'C' and then the pitch hops up to 'D' for the rest of the quarter note.

This command in XPMCK would be very helpful in achieving certain drum techniques, especially on the c64.

For example, a snare sound that begins with a noise waveform for 2 frames, then changes to a pulse waveform, which sweeps downward for 3 frames, and then the rest of the note ends as a noise waveform. The only way to do this kind of effect now is by using 32nd notes and adjusting the tempo of the song, and results are not precise.

This command would also make it easy to make short downward pitchbend kick drum sounds at the beginning of notes, no matter what the tempo.

The current implementation of @FT only supports a single (fixed) cutoff frequency per filter. The cutoff should be able to slide up or down for each frame.