Routines
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BCDC: IO: Enter letter for save or load.
Used by the routines at Game_Save and Game_Load.
IO_EnterLetter BCDC CALL Print_StringOnStack
BCDF DEFM $16,$0E,$05,"enter version letter",$5E
BCF7 LD (IY-$32),$00
IO_EnterLetter_0 BCFB LD A,(IY-$32)
BCFE AND $DF
BD00 CP $41
BD02 JR C,IO_EnterLetter_0
BD04 CP $5B
BD06 JR NC,IO_EnterLetter_0
BD08 LD ($BB49),A
BD0B RET
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