Pentagram: Routine at B178

Used by the routines at OBJECT_DONE, DISPLAY_MENU and WON.

All 192 rows of 32 bytes from BUFFER. The buffer runs the other way up from the display -- its first row is the bottom line of the screen -- because the game's pixel y counts up from the bottom; so the copy starts at the display's bottom-left byte and works up a line at a time. Used on the first turn in a room (OBJECT_DONE) and for the text screens (DISPLAY_MENU, WON). Knight Lore's copy clears the buffer as it goes; this one leaves it as it is.

Used by the routines at OBJECT_DONE, DISPLAY_MENU and WON. All 192 rows of 32 bytes from BUFFER. The buffer runs the other way up from the display -- its first row is the bottom line of the screen -- because the game's pixel y counts up from the bottom; so the copy starts at the display's bottom-left byte and works up a line at a time. Used on the first turn in a room (OBJECT_DONE) and for the text screens (DISPLAY_MENU, WON). Knight Lore's copy clears the buffer as it goes; this one leaves it as it is.
SHOW_BUFFER	B178	LD HL,BUFFER	From the buffer's first row to the display's bottom line; 192 rows
	B17B	LD DE,$57E0
	B17E	LD C,$C0
SHOW_BUFFER_0	B180	PUSH BC	A row of 32 bytes; HL runs on to the next row by itself
	B181	PUSH DE
	B182	LD BC,$0020
	B185	LDIR
	B187	POP DE	Up a display line, unless that crossed a character row
	B188	DEC D
	B189	LD A,D
	B18A	CPL
	B18B	AND $07
	B18D	JR NZ,SHOW_BUFFER_1
	B18F	LD A,E	Crossing a character row: back 32 in E, and back into this third unless that borrowed
	B190	SUB $20
	B192	LD E,A
	B193	JR C,SHOW_BUFFER_1
	B195	LD A,D
	B196	ADD A,$08
	B198	LD D,A
SHOW_BUFFER_1	B199	POP BC	The next row
	B19A	DEC C
	B19B	JR NZ,SHOW_BUFFER_0
	B19D	RET