Knight Lore: Routine at CE14

Used by the routine at head_follows_legs.

Normally the head is the legs' type plus 16: the same creature, facing and animation frame. About one frame in 64 (the random byte at $5BA5 being 0 or 1, or $FE or $FF) the head is given one of two other frames of its type group instead -- frame 6 or frame 7 -- which it then holds for eight frames. The legs only ever use frames 0 to 5, so frames 6 and 7 exist only as heads. What the two look like has not been checked against the sprites.

Used by the routine at head_follows_legs. Normally the head is the legs' type plus 16: the same creature, facing and animation frame. About one frame in 64 (the random byte at $5BA5 being 0 or 1, or $FE or $FF) the head is given one of two other frames of its type group instead -- frame 6 or frame 7 -- which it then holds for eight frames. The legs only ever use frames 0 to 5, so frames 6 and 7 exist only as heads. What the two look like has not been checked against the sprites.
choose_head_sprite	CE14	LD A,($5BA5)	random byte below 2: frame 6
	CE17	CP $02
	CE19	JR C,head_frame_six
	CE1B	CP $FE	$FE or above: frame 7
	CE1D	JR NC,head_frame_seven
	CE1F	LD A,(IY+$00)	otherwise the legs' type