.set rPad, 9
.set r817F, 10
.set addrTimer, 0x817F0478
.set addrDuration, 0x817F0479
.set addrCount, 0x817F04A4

.direct:
.checkController:
## R+X
  lis rPad, mPadButton+2@ha
  lhzu r0, mPadButton+2@l(rPad)
  andi. r0, r0, 0xFFF0
  cmplwi r0, 0x420
  bne+ .done
## effective D-Pad
  lbz rPad, -2+0x18+3(rPad)
### skip if no D-Pad pressed
  rlwinm. r0, rPad, 0, 0xF
  beq .done
.prepare:
  lis r817F, 0x817F
## set display timer
  lbz r0, addrDuration@l(r817F)
  stb r0, addrTimer@l(r817F)

.update.success:
  lhz r12, addrCount@l(r817F)
### DD(0x4)
  rlwinm r0, rPad, 32-2, 0x1
  sub r12, r12, r0
### DU(0x8)
  rlwinm r0, rPad, 32-3, 0x1
  add r12, r12, r0
## write back
  sth r12, addrCount@l(r817F)

.update.attempt:
  lhz r12, addrCount+2@l(r817F)
### DL(0x1)
  rlwinm r0, rPad, 0, 0x1
  sub r12, r12, r0
### DR(0x2)
  rlwinm r0, rPad, 32-1, 0x1
  add r12, r12, r0
## write back
  sth r12, addrCount+2@l(r817F)

.done:
## orig
  li r6, 0