第九章同步狀態(tài)機(jī)

1、2022-3-1912022-3-1922022-3-1932022-3-1942022-3-1952022-3-196StateNext_Statein/outin/out2022-3-1972022-3-1982022-3-199GF2022-3-1910GF2022-3-19112022-3-19122022-3-1913Idle Start Stop Clear A/G=0 !A A/F=1 !Reset /F=0 G=0!Reset /F=0 G=0 !Reset | !A/F=0 G=1 狀態(tài)轉(zhuǎn)移圖!Reset /F=0 G=02022-3-19142022-3-19152022-

2、3-19162022-3-1917例12022-3-19182022-3-19192022-3-1920例22022-3-19212022-3-19222022-3-1923module fsm (Clock, Reset, A, F, G);input Clock, Reset, A;output F,G;reg 1:0 state, Nextstate;parameter Idle = 2b00, Start = 2b01, Stop = 2b10, Clear = 2b11;always (posedge Clock) begin if (!Reset) begin state = Id

3、le; end else state = Nextstate; end2022-3-1924always ( state or A ) begin F=0; G=0; if (state = Idle) begin if (A) Nextstate = Start; else begin Nextstate = Idle; G=1; end end else if (state = Start) if (!A) Nextstate = Stop; else Nextstate = Start;else if (state = Stop) if (A) Nextstate = Clear; el

4、se Nextstate = Stop; else if (state = Clear) begin if (!A) Nextstate = Idle; else Nextstate = Clear; F=1; end else Nextstate= Idle; endendmodule 黃色是我加的，懷疑老師寫(xiě)錯(cuò)了例32022-3-19252022-3-19262022-3-1927assign G=state3;assign F=state0;parameter /- G_ i_ j_ F-/ Zero=4b0_0_0_0, Idle=4b0_0_0_0, start=4b0_0_0_0,

5、 stop=4b0_0_0_0, clear=4b0_0_0_0,例42022-3-19282022-3-19292022-3-19302022-3-19312022-3-19322022-3-19332022-3-19342022-3-19352022-3-19362022-3-19372022-3-19382022-3-19392022-3-19402022-3-19412022-3-19422022-3-19432022-3-19442022-3-19452022-3-1946always (posedge clk) begin if(reset) begin /*置輸出為置輸出為0*/ end else if(set) begin /*置輸出為置輸出為1*/ endelse begin /*與時(shí)鐘同步的邏輯與時(shí)鐘同步的邏輯*/ endend2022-3-1947人有了知識(shí)，就會(huì)具備各種分析能力，明辨是非的能力。所以我們要勤懇讀書(shū)，廣泛閱讀，古人說(shuō)“書(shū)中自有黃金屋。”通過(guò)閱讀科技書(shū)籍，我們能豐富知識(shí)，培養(yǎng)邏輯思維能力；