Chase H.Q.: Routine at C2B1

C2B1: Scroll the 10 high-score row addresses down by one pixel line

Advances each of the 10 screen addresses in the row-offset table at $C401 (built by insert_high_score_entry) down by one pixel row, handling the ZX screen's non-linear third-boundary wrap. If a row's address runs into one of the bottom-of-window bounds ($C2D3-$C2EB), calls redraw_score_name to redraw/reset that row's name text. The byte at $C2F2 (normally NOP) is patched to RET by name_entry_input when name entry finishes, which stops this scroll immediately. Used by the routine at insert_high_score_entry.
scroll_score_rows	C2B1	LD B,$0A	B = 10 rows
	C2B3	LD HL,$C401	HL -> row-offset table
ssr_row_loop	C2B6	LD E,(HL)	DE = this row's screen address
	C2B7	INC HL
	C2B8	LD D,(HL)
	C2B9	INC D	Advance one pixel row
	C2BA	LD A,D
	C2BB	AND $07	Handle the screen-third boundary wrap (as in cycle_and_draw_letter)
	C2BD	JP NZ,scroll_score_rows_0
	C2C0	LD A,D
	C2C1	SUB $08
	C2C3	LD D,A
	C2C4	LD A,E
	C2C5	ADD A,$20
	C2C7	LD E,A
	C2C8	JR NC,scroll_score_rows_0
	C2CA	LD A,D
	C2CB	ADD A,$08
	C2CD	LD D,A
scroll_score_rows_0	C2CE	LD (HL),D	Write the updated address back into the table
	C2CF	DEC HL
	C2D0	LD (HL),E
	C2D1	INC HL
	C2D2	INC HL
$C2D3-$C2EB tests whether this row's address has reached the bottom of one of its two allowed screen windows; if so, jumps to redraw_score_name instead of continuing the scroll.
	C2D3	LD A,D
	C2D4	CP $48
	C2D6	JR C,scroll_score_rows_2
	C2D8	CP $50
	C2DA	JR NC,scroll_score_rows_1
	C2DC	LD A,E
	C2DD	CP $E0
	C2DF	JR C,scroll_score_rows_2
	C2E1	JP redraw_score_name
scroll_score_rows_1	C2E4	CP $58
	C2E6	JR NC,scroll_score_rows_2
	C2E8	LD A,E
	C2E9	CP $E0
	C2EB	JP C,redraw_score_name
scroll_score_rows_2	C2EE	LD DE,$001F	Advance to the next row's table slot (31-byte stride)
	C2F1	ADD HL,DE
This entry point is used by the routine at redraw_score_name.
ssr_continue	C2F2	NOP	Self-modified to RET by name_entry_input to stop the scroll
	C2F3	DJNZ ssr_row_loop
	C2F5	RET