Eat my dust, SmoothPlayer

header:
ld e, $80

playsample:
ld a, e
ldh [rNR14], a
ldh [rNR24], a
ld a, [hli]
ldh [rNR51], a
ld a, [hli]
ldh [rNR50], a
bit 7, h ;76 cycles up to this point
jr z, endsample ;8u/12t
ld h, $40
inc bc
ld a, c
ld [$2000], a
ld a, b
ld [$3000], a ;56 extra cycles
endsample: ;88 cycles w/o bank changing/140 cycles w/bank changing
reti