Wheelie: Routine at 74AA

74AA: Print characters to the screen

Used by the routines at 7552 and PINK_HEADER.
PRINT_BIKE_GRAPHIC	74AA	LD H,$78	H=$78
	74AC	JR PRINT_BIKE_GRAPHIC_0	Jump to PRINT_BIKE_GRAPHIC_0
PRINT_LETTER	74AE	EXX	Exchange BC, DE, and HL with shadow registers with BC', DE', and HL'
	74AF	ADD A,A	Double the value in A
	74B0	LD L,A	L=A
	74B1	LD H,$0F	H=$0F
	74B3	ADD HL,HL	Shift HL left two bits
	74B4	ADD HL,HL	Shift HL left two bits
PRINT_BIKE_GRAPHIC_0	74B5	LD B,$08	B=$08
	74B7	LD C,D	C=D
PRINT_LETTER_LOOP	74B8	LD A,(HL)	A=(HL)
	74B9	LD (DE),A	Writes A to the memory location held by DE
	74BA	INC L	Increases L by one
	74BB	INC D	Increases D by one
	74BC	DJNZ PRINT_LETTER_LOOP	Decrease B by one, jump to PRINT_LETTER_LOOP if not zero
	74BE	LD D,C	D=C
	74BF	INC E	Increases E by one
	74C0	EXX	Exchange BC, DE, and HL with shadow registers with BC', DE', and HL'
	74C1	RET	Return
	74C2	NOP
This entry point is used by the routines at 74DC, 7552 and ED52.
PRINT_BIKE_GRAPHIC_1	74C3	LD B,$20	B=$20
	74C5	LD DE,$5AE0	DE=$5AE0
PRINT_BIKE_GRAPHIC_2	74C8	LD (DE),A	Writes A to the memory location held by DE
	74C9	INC E	Increases E by one
	74CA	DJNZ PRINT_BIKE_GRAPHIC_2	Decrease B by one, jump to PRINT_BIKE_GRAPHIC_2 if not zero
	74CC	LD B,$20	B=$20
	74CE	EXX	Exchange BC, DE, and HL with shadow registers with BC', DE', and HL'
	74CF	LD DE,$50E0	DE=$50E0
	74D2	EXX	Exchange BC, DE, and HL with shadow registers with BC', DE', and HL'
PRINT_STRING	74D3	LD A,(HL)	Stores the first letter of the string in A
	74D4	CALL PRINT_LETTER	Calls the subroutine at PRINT_LETTER
	74D7	INC HL	Increases HL by one
	74D8	DJNZ PRINT_STRING	Decrease B by one, loop back to PRINT_STRING and keep going until B is zero
	74DA	RET	Return
	74DB	NOP