此题为判断题(对,错)。
第1题:
A.如果备用单元是处于正常的SP-EX状态,才具备主备倒换的条件
B.不允许把WO-EX状态的功能单元校成SP-EX状态
C.在一般情况下实现主备倒换时,要求使用ZUSC指令把SP-EX状态的功能单元校成WO-EX状态,允许带FCD参数强制切换
第2题:
定义状态机当前状态为state ,次态为next _state; 输入a,输出b, 则下列为Mealy状态机的写法是:
A.always@(posedge clk) case (state ) 0:next_state<=1; 1:next_state<=x;#B.always@(posedge clk) case (state ) 0: if(a==0)next_state<=1; else next_state<=x; 1:next_state<=x;#C.always@(posedge clk) case (state ) 0: if(state==0)next_state<=1; else next_state<=x; 1:next_state<=x;#D.以上都不对第3题:
定义状态机当前状态为state ,次态为next _state; 输入a,输出b, 则下列为Mealy状态机的写法是:
A.always@(posedge clk) case (state ) 0:next_state<=1; 1:next_state<=x;#B.always@(posedge clk) case (state ) 0: if(a==0)next_state<=1; else next_state<=x; 1:next_state<=x;#C.always@(posedge clk) case (state ) 0: if(state==0)next_state<=1; else next_state<=x; 1:next_state<=x;#D.以上都正确第4题:
A.BVCI在SGSN中编号唯一
B.BVCI在NSEI中编号唯一
C.BVCI编号在SGSN中需要静态设定
D.BVCI与NSVCI有固定对应关系
第5题:
已知如下对输出逻辑的描述代码,state为当前状态,out为状态机输出。由此可知该状态机为Mealy型状态机。 always @(state) case (state) S0: out = 0; S1: out = 0; S2: out = 1; S3: out = 1; endcase