When the XM comes out you should write music for existing games. Be cool the hear pokey on robotron, food fight and dangerzone on ace of aces hehe
Why would he need to write POKEY audio for Robotron: 2084? Just take the existing POKEY audio from the 5200/Atari 8-bit versions. Unless it sucks like XEGS Desert Falcon. XEGS Commando POKEY audio sounds different from the 7800 POKEY version to me.
Hell, Atari arcade games used POKEY...or Dual/Quad POKEY.
Another issue apparently would be timing. Look at Plutos/Sirius...CPUWiz said there isn't enough available to add POKEY audio to either of those shooters.
But by all means, if there's a will, maybe there's a way. Fire it up... Get Dual POKEY+TIA+the YM2151 in the XM.