Chase H.Q.: Routine at 83CD

83CD: Bootstrap / Uber main loop

Used by the routine at E839.
Builds a table of flipped bytes at $EF00.
bootstrap	83CD	LD HL,$EF00	Point HL at $EF00
flip_table_loop	83D0	LD B,$08	8 iterations
	83D2	LD A,L	A is the index into the table
flip_byte_loop	83D3	RLCA	Shift a bit out of A leftwards and into C rightwards
	83D4	RR C	Shift a bit out of A leftwards and into C rightwards
	83D6	DJNZ flip_byte_loop	Loop for 8 bits
	83D8	LD (HL),C	Write C out and advance
	83D9	INC L	Write C out and advance
	83DA	JR NZ,flip_table_loop	Loop for 256 iterations (when L overflows)
	83DC	CALL attract_mode_hook	Call attract_mode_hook
	83DF	XOR A	overtake_bonus = 0
	83E0	LD ($A13C),A	overtake_bonus = 0
Clear score_bcd and retry_count.
	83E3	LD HL,$8002
	83E6	LD B,$05
bootstrap_0	83E8	LD (HL),A
	83E9	INC HL
	83EA	DJNZ bootstrap_0
	83EC	INC A	wanted_stage_number = 1
	83ED	LD (HL),A	wanted_stage_number = 1
	83EE	INC A	credits = 2
	83EF	LD ($A13D),A	credits = 2
	83F2	CALL main_loop	Call the main loop
	83F5	LD A,($A139)	Call relocated plsp_f3b6_128k (speech) if in 128K mode
	83F8	AND A
	83F9	LD HL,$C003
	83FC	CALL NZ,$81AA
	83FF	JR bootstrap	Loop