pld應(yīng)用程序舉例-資料下載頁(yè)
2025-07-07 12:02本頁(yè)面
【正文】 nal count_1:integer range 0 to 25000000。signal ys1s:integer range 0 to 50000000。signal jia1:integer range 0 to 1。beginprocessbeginwait until in50m=39。139。count=count+1。if count=85034 thencount=0。in1=not in1。end if。end process。processbeginwait until in50m=39。139。count_1=count_1+1。if count_1=63775 thencount_1=0。in2=not in2。end if。end process。processbegin wait until in50m=39。139。ys1s=ys1s+1。if ys1s=50000000 thenys1s=0。jia1=jia1+1。end if。if jia1=0 thena=in1。elsea=in2。end if。end process。end。PLD 17音符編程（if語(yǔ)句）library ieee。use 。entity ypyy isport(in50m:in std_logic。 a:out std_logic)。end。architecture gg of ypyy issignal in1:std_logic。signal in2:std_logic。signal in3:std_logic。signal in4:std_logic。signal in5:std_logic。signal in6:std_logic。signal in7:std_logic。signal count:integer range 0 to 25000000。signal count_1:integer range 0 to 25000000。signal count_2:integer range 0 to 25000000。signal count_3:integer range 0 to 25000000。signal count_4:integer range 0 to 25000000。signal count_5:integer range 0 to 25000000。signal count_6:integer range 0 to 25000000。signal ys1s:integer range 0 to 50000000。signal jia1:integer range 0 to 7。beginprocessbeginwait until in50m=39。139。count=count+1。if count=95419 thencount=0。in1=not in1。end if。end process。processbeginwait until in50m=39。139。count_1=count_1+1。if count_1=85034 thencount_1=0。in2=not in2。end if。end process。processbeginwait until in50m=39。139。count_2=count_2+1。if count_2=75757 thencount_2=0。in3=not in3。end if。end process。processbeginwait until in50m=39。139。count_3=count_3+1。if count_3=71633 thencount_3=0。in4=not in4。end if。end process。processbeginwait until in50m=39。139。count_4=count_4+1。if count_4=63775 thencount_4=0。in5=not in5。end if。end process。processbeginwait until in50m=39。139。count_5=count_5+1。if count_5=56818 thencount_5=0。in6=not in6。end if。end process。processbeginwait until in50m=39。139。count_6=count_6+1。if count_6=50607 thencount_6=0。in7=not in7。end if。end process。processbegin wait until in50m=39。139。ys1s=ys1s+1。if ys1s=50000000 thenys1s=0。jia1=jia1+1。end if。if jia1=0 thena=in1。end if。if jia1=1 thena=in2。end if。if jia1=2 thena=in3。end if。if jia1=3 thena=in4。end if。if jia1=4 thena=in5。end if。if jia1=5 thena=in6。end if。if jia1=6 thena=in7。end if。end process。end。36 / 36
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