Blizzard Pass: Routine at 28154

28154: Clear Illustration

Used by the routine at DrawIfPictures. Blanks the illustration from pixel row 175 down to 80, lets the picture bytecode paint the saved attributes, then copies that buffer onto the screen.
ClearIllustration	28154	LD BC,44800
ClearIllustration_0	28157	PUSH BC
	28158	CALL 8874
	28161	PUSH HL
	28162	POP DE
	28163	INC DE
	28164	LD BC,31
	28167	LD (HL),0
	28169	LDIR
	28171	POP BC
	28172	DEC B
	28173	LD A,79
	28175	CP B
	28176	JR NZ,ClearIllustration_0
	28178	LD HL,22528
	28181	LD DE,22529
	28184	LD BC,383
	28187	LD (HL),0
	28189	LDIR
	28191	LD HL,22528
	28194	LD DE,27770
	28197	LD BC,384
	28200	LDIR
	28202	CALL DrawRoomPicture
	28205	LD DE,22528
	28208	LD HL,27770
	28211	LD BC,384
	28214	LDIR
	28216	RET