Jankey-board GB

;idk if it'll work but it needs to work on GB and GBC and not just GBC with the unused pin and special register
ld a, $01
ldh [rSC], a ;internal clock, don't start transfer yet
ld a, $40 ;01000000
ldh [rSB], a
;and then...
ld a, $81 ;start the transfer with the internal clock
ldh [rSC], a
waitforstart:
ldh a, [rSB]
bit 6, a ;bit 6 is the bit I set
jr nz, waitforstart ;wait until the bit gets shifted out so we know the keyboard has to resend its stuff
xor a
ldh [rSC], a ;now start the transfer with external clock WITHOUT the transfer bit set
waitforbit:
ldh a, [rSB]
bit 7, a ;since the register shifted left in order to inhibit communication, I check this bit until it shifts again, which means the start bit is shifted in
ld a, $01
ldh [rSB], a ;put a 1 in bit 0 to keep the data line high to idle at the end?
jr nz, waitforbit
ld a, $80
ldh [rSC], a ;set the transfer bit to reset the bit counter
;*do something here while waiting for the keyboard to send its data*
;pretend this gets executed when the serial interrupt fires off
serialinterrupt:
ldh a, [rSB]
push af ;just find a way to store it somewhere
ld a, $01
ldh [rSC], a ;the communication shouldn't be inhibited because the clock line is high, so it's idling

;do 1 or 2 keys per frame