Tranz Am: Routine at 617F

617F: Routine at 617F

Used by the routine at 625C.
617F	LD A,$01
6181	LD ($5E43),A
6184	LD A,$40
6186	JR $617B
This entry point is used by the routines at 61C2 and 61E0.
6188	IN A,($1F)
618A	CPL
618B	RET
This entry point is used by the routine at 6CB6.
618C	LD A,($5E3E)
618F	BIT 1,A
6191	JR NZ,$6188
6193	LD A,$FE
6195	OUT ($FD),A
6197	IN A,($FE)
6199	AND $1E
619B	CP $1E
619D	JR Z,$61A7
619F	AND $14
61A1	CP $14
61A3	JR Z,$61B9
61A5	JR $61BC
61A7	LD A,$7F
61A9	OUT ($FD),A
61AB	IN A,($FE)
61AD	AND $1E
61AF	CP $1E
61B1	JR Z,$61BF
61B3	AND $14
61B5	CP $14
61B7	JR Z,$61BC
61B9	LD A,$FD
61BB	RET
61BC	LD A,$FE
61BE	RET
This entry point is used by the routines at 61C2 and 61E0.
61BF	LD A,$FF
61C1	RET