Avalon: Unused RAM at 81BA

81BA: Unused colour/attribute fill routine


Routine that sets screen colours for the top 6 lines of the play area. Possibly a remnant of an old sky lightning flash routine in the intro at C07A/E610.
81BA	LD C,A	Routine not used
81BB	RLA
81BC	RLA
81BD	RLA
81BE	AND $38
81C0	LD B,A
81C1	LD HL,$5842
81C4	LD DE,$0000
81C7	LD A,$07
81C9	LD ($8BB0),A
81CC	LD A,$1C
81CE	LD ($8BAF),A
81D1	LD A,(HL)
81D2	ADD A,C
81D3	AND $07
81D5	LD E,A
81D6	LD A,(HL)
81D7	ADD A,B
81D8	AND $38
81DA	OR E
81DB	LD (HL),A
81DC	INC HL
81DD	LD A,($8BAF)
81E0	DEC A
81E1	JR NZ,$81CE
81E3	LD A,(DE)
81E4	INC DE
81E5	OUT ($FE),A
81E7	INC HL
81E8	INC HL
81E9	INC HL
81EA	INC HL
81EB	LD A,($8BB0)
81EE	DEC A
81EF	JR NZ,$81C9
81F1	RET
81F2	RET