napisal stack.asm

ass1/stack.asm

@@ -0,0 +1,56 @@
+stk		START	0
+		JSUB	stackinit
+
+		LDA	#1
+		STA	@stkptr
+		JSUB	stackpush
+
+		LDA	#2
+		STA	@stkptr
+		JSUB	stackpush
+
+		LDA	#3
+		STA	@stkptr
+		JSUB	stackpush
+
+		JSUB	stackpop
+		LDA	@stkptr
+		STA	val3
+
+		JSUB	stackpop
+		LDA	@stkptr
+		STA	val2
+
+		JSUB	stackpop
+		LDA	@stkptr
+		STA	val1
+
+halt		J	halt
+
+stackpush	STA	temp
+		LDA	stkptr
+		ADD 	#3
+		STA	stkptr
+		LDA	temp
+		RSUB
+
+stackpop	STA  	temp
+		LDA  	stkptr
+		SUB  	#3     
+		STA  	stkptr
+		LDA  	temp
+		RSUB
+
+stackinit	STA	temp
+		LDA	#stack
+		STA	stkptr
+		LDA	temp
+		RSUB
+
+stkptr		RESW	1
+temp		RESW	1
+val1		RESW	1
+val2		RESW	1
+val3		RESW	1
+stack		RESW	50
+		END		stk