*0RDDh LOAD R,DD Load 8 bit data DD to PSG register R (0R015)
*1NNNh PAUSE N NNN Pause for N prescaled ticks (0 < N < 4095)*2NNNh REPEAT N NNN Set loop counter to N for this stream (0 < N < 4095)and mark next instruction as loop start.
*3xxxh (reserved) Do not use
*4000h NOP No operation (64 us idle)