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64402: Wait for keypress
Used by the routine at DRAW_LOCATION.
PIC_WAIT_FOR_KEY 64402 LD BC,254
PIC_WAIT_FOR_KEY_0 64405 IN A,(C)
64407 AND 31
64409 CP 31
64411 JR Z,PIC_WAIT_FOR_KEY_0
64413 LD DE,(64220)
64417 LD (23693),DE
64421 LD A,(64219)
64424 LD (23624),A
64427 AND 56
64429 RRCA
64430 RRCA
64431 RRCA
64432 OUT (254),A
64434 LD A,(64218)
64437 LD (23697),A
64440 RES 7,(IY+9)
64444 RET
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