NOTWALL:
LDA $C2,x
CMP #$01
BNE NORMAL
STZ $B6,x
BRA CONTACT_STUFF
RTS
NORMAL:
LDY $157C,x
LDA XSPD,y
STA $B6,x
LDA #$10
STA $AA,x
JSL $01802A

CONTACT_STUFF:
JSL $01A7DC