Alien (BUGFIX 1.7): Routine at 31612

31612: FillAttrColumn

Used by the routines at 31417, 32816, 34859, 34882, 35228 and 35638. Paint a 10-cell-wide attribute block — C rows of attribute A starting at HL (stride 22 = 32-10 to the next row). Used to colour the menu rows.
31612	LD DE,22	row stride remainder (32 - 10)
31615	LD B,10	10 attribute cells per row
31617	LD (HL),A
31618	INC HL
31619	DJNZ 31617
31621	ADD HL,DE	next row
31622	DEC C
31623	JR NZ,31615
31625	RET