Knight Lore: Routine at AFBD

Used by the routine at next_frame_or_die.

The start of one frame. IX steps through 40 object records of 32 bytes each, from $5C08 up to font -- the byte just below the font. The game deliberately puts its object table on top of the ROM's system variables: from $5BA0 upwards nothing the ROM keeps there is wanted, and Knight Lore does not call the ROM once it is running. LAST-K, at $5C08, is the first byte of object zero.

Objects 0 and 1 are Sabreman's legs and upper body, and objects 2 and 3 the slots for the charms that lie in the current room. The rest are the room's walls, blocks and creatures in the order the room was built.

Used by the routine at next_frame_or_die. The start of one frame. IX steps through 40 object records of 32 bytes each, from $5C08 up to font -- the byte just below the font. The game deliberately puts its object table on top of the ROM's system variables: from $5BA0 upwards nothing the ROM keeps there is wanted, and Knight Lore does not call the ROM once it is running. LAST-K, at $5C08, is the first byte of object zero. Objects 0 and 1 are Sabreman's legs and upper body, and objects 2 and 3 the slots for the charms that lie in the current room. The rest are the room's walls, blocks and creatures in the order the room was built.
onscreen_loop	AFBD	LD A,($5BA2)	$5BBC starts the frame at the frame counter's low byte and goes up by one for each object
	AFC0	LD ($5BBC),A
	AFC3	LD IX,$5C08	IX = the first object record