Chase H.Q.: Routine at C2F6

C2F6: Redraw a high-score row's name text, letter by letter

Reached from scroll_score_rows when a row's scroll position hits the bottom of its window, and from insert_high_score_entry (via the redraw_name_frame entry point) once per name-entry frame. Draws each character of the row's name field (terminated by a byte with bit 7 set) using the shadow register set, so the caller's main BC/DE/HL (the scroll_score_rows row loop, or the caller's own state) survive the call unharmed. The per-character glyph offset/address arithmetic here mirrors cycle_and_draw_letter and is not traced line-by-line. Used by the routine at scroll_score_rows.
redraw_score_name	C2F6	LD A,B
	C2F7	CP $09
	C2F9	JR NZ,rsn_char_loop
This entry point is used by the routine at insert_high_score_entry.
redraw_name_frame	C2FB	PUSH HL	Toggle a blink flag at $C58D
	C2FC	LD HL,$C58D
	C2FF	RLC (HL)
	C301	POP HL
	C302	JR C,rsn_char_loop2	Alternate blink phase -> the second name-draw loop below
rsn_char_loop	C304	LD A,(HL)	A = next name character
	C305	AND $7F
	C307	SUB $20
	C309	JP NZ,redraw_score_name_1	Non-space -> draw it
redraw_score_name_0	C30C	INC E	Space -> just advance one column
	C30D	BIT 7,(HL)	Test for end of name (bit 7 set)
	C30F	INC HL
	C310	JP Z,rsn_char_loop	No -> next character
	C313	JP ssr_continue	Yes -> resume the scroll_score_rows scroll loop
redraw_score_name_1	C316	PUSH DE	Move the screen address into the shadow DE
	C317	EXX
	C318	POP DE
	C319	LD C,$12
	C31B	CP $21
	C31D	JR NC,redraw_score_name_2
	C31F	LD C,$0B
	C321	CP $10
	C323	JP NC,redraw_score_name_2
	C326	LD C,$00
	C328	DEC A
	C329	JR Z,redraw_score_name_3
	C32B	INC C
	C32C	SUB $07
	C32E	JR Z,redraw_score_name_3
	C330	INC C
	C331	DEC A
	C332	JR Z,redraw_score_name_3
	C334	INC C
	C335	SUB $03
	C337	JR Z,redraw_score_name_3
	C339	INC C
	C33A	JR redraw_score_name_3
redraw_score_name_2	C33C	SUB C
	C33D	LD C,A
redraw_score_name_3	C33E	LD A,C	Compute this glyph's bitmap address in font table $800C (offset = index * 7, as in cycle_and_draw_letter)
	C33F	RLCA
	C340	LD B,A
	C341	RLCA
	C342	ADD A,B
	C343	ADD A,C
	C344	LD B,$00
	C346	RL B
	C348	LD C,A
	C349	LD HL,($800C)
	C34C	ADD HL,BC
	C34D	LD BC,$0007
	C350	XOR A
	C351	LD (DE),A
	C352	INC E
rsn_draw_row	C353	INC D	Draw one pixel row of the glyph, handling the screen third-boundary wrap (as in cycle_and_draw_letter / scroll_score_rows)
	C354	LD A,D
	C355	AND $07
	C357	JR Z,redraw_score_name_5
	C359	DEC E
redraw_score_name_4	C35A	LDI
	C35C	JP PE,rsn_draw_row	More glyph rows to draw
	C35F	EXX	Restore the caller's BC/DE/HL
	C360	JP redraw_score_name_0	Next character
redraw_score_name_5	C363	LD A,D	Screen-third boundary wrap
	C364	SUB $08
	C366	LD D,A
	C367	LD A,E
	C368	ADD A,$1F
	C36A	LD E,A
	C36B	JP NC,redraw_score_name_4
	C36E	LD A,D
	C36F	ADD A,$08
	C371	LD D,A
	C372	LDI
	C374	JP PE,rsn_draw_row
	C377	EXX	Restore the caller's BC/DE/HL
	C378	JP redraw_score_name_0	Next character
Second name-draw loop, used on the alternate blink phase ($C302): scans the same string as the draw loop above (bit-7-terminated, checked at $C37C/$C384) but instead of looking up and blitting each glyph's bitmap, it writes 8 rows of zero bytes per character ($C390-$C3A9, same screen-third-wrap handling as $C363-$C371) -- i.e. this erases the text rather than drawing it, giving the name-entry cursor its blink effect by alternating between rsn_char_loop (draw) and this loop (erase) each frame.
rsn_char_loop2	C37B	LD A,(HL)
	C37C	AND $7F
	C37E	SUB $20
	C380	JP NZ,redraw_score_name_7
redraw_score_name_6	C383	INC E
	C384	BIT 7,(HL)
	C386	INC HL
	C387	JP Z,rsn_char_loop2
	C38A	JP ssr_continue	Resume the scroll_score_rows scroll loop
redraw_score_name_7	C38D	PUSH DE
	C38E	EXX
	C38F	POP DE
	C390	LD B,$08
redraw_score_name_8	C392	XOR A
	C393	LD (DE),A
	C394	INC D
	C395	LD A,D
	C396	AND $07
	C398	JR NZ,redraw_score_name_9
	C39A	LD A,D
	C39B	SUB $08
	C39D	LD D,A
	C39E	LD A,E
	C39F	ADD A,$20
	C3A1	LD E,A
	C3A2	JP NC,redraw_score_name_9
	C3A5	LD A,D
	C3A6	ADD A,$08
	C3A8	LD D,A
redraw_score_name_9	C3A9	DJNZ redraw_score_name_8
	C3AB	EXX	Restore the caller's BC/DE/HL
	C3AC	JP redraw_score_name_6	Next character