Mnenomic	Operation	Addressing  Mode	Instruction				Condition Codes
			Prebyte	Opcode	Operand	Cycles
STD	Store Accumulator D	DIR	-	DD	dd	4
		EXT	-	FD	hh ll	5
		IND, X	-	ED	ff	5
		IND, Y	18	ED	ff	6
STOP	Stop Internal Clocks	INH	-	CF	-	2
STS	Store Stack Pointer	DIR	-	9F	dd	4
		EXT	-	BF	hh ll	5
		IND, X	-	AF	ff	5
		IND, Y	18	AF	ff	6
STX	Store Index Register X	DIR	-	DF	dd	4
		EXT	-	FF	hh ll	5
		IND, X	-	EF	ff	5
		IND, Y	18	EF	ff	6
STY	Store Index Register Y	DIR	18	DF	dd	5
		EXT	18	FF	hh ll	6
		IND, X	1A	EF	ff	6
		IND, Y	18	EF	ff	6
SUBA	Subtract Memory from A	IMM	-	80	ii	2
		DIR	-	90	dd	3
		EXT	-	B0	hh ll	4
		IND, X	-	A0	ff	4
		IND, Y	18	A0	ff	5