嵌入式系统：汇编

一个小作业。
找出最大值和最小值，然后相乘。

我使用if-else语句实现。

			Min	EQU	50H 
			Max EQU 51H
			ORG 0H
			
START:		
			MOV 40H, #24 ; 16 numbers from address 40H
			MOV 41H, #2
			MOV 42H, #63
			MOV 43H, #11
			MOV 44H, #28
			MOV 45H, #8
			MOV 46H, #9
			MOV 47H, #14
			MOV 48H, #16
			MOV 49H, #35
			MOV 4AH, #54
			MOV 4BH, #13
			MOV 4CH, #6
			MOV 4DH, #17
			MOV 4EH, #32
			MOV 4FH, #25
			MOV R0, #41H ; the pointer to travel in the array
			MOV Max, 40H ; begin from the first number 
			MOV Min, 40H 
			MOV R2, #15 ; the number to control loop, 15 times
			
			
LP1:		
			MOV A, @R0
			CJNE A, Max, NEXT1 ; compare A with Max			

NEXT1:		
			JC	NEXT2 ; if A < Max, then go to NEXT2
			MOV Max, A ; if A >= Max, then MAX = A
			INC R0 ; Move to the last number by one step
			SJMP LP2 ; end one loop
				
NEXT2:		
			CJNE A, Min, NEXT3 ; compare A with Min

NEXT3:		
			JNC LP2 ; if A >= Min, then back to the loop
			MOV Min, A ; if A < Min, them Min = A
			INC R0
			SJMP LP2 

LP2:		
			DJNZ R2, LP1 ; control loop times, 15 times totally

MULTI:		
			MOV A, Min
			MOV B, Max
			MUL AB
			MOV 52H, A
			MOV 53H, B

END ; Min is 2, Max is 63, Min*Max is 126, after run this project, register A is 0x7e = 126, because it save 
	; Low 8 bits, and register B is 0x00, beacause it save High 8 bits.