picoblaze_pushbutton.v

Xilinx ISE9.x FPGACPLD设计指南 原书光盘上的源码 包含大量vhdl源码

module picoblaze_pushbutton(
  iCLK,    
  iRST_N,  
  iADDR,   
  iDATAIN, 
  iWR,     
  iRD,     

  
  iPUSHBUTTON,
  oHC_DBUS,
  oINTERRUPT

);
input iCLK;
input iRST_N;
input [ 7: 0] iADDR;
input [ 7: 0] iDATAIN;
input         iWR;
input         iRD;

output [ 7: 0] oHC_DBUS;

input [ 3: 0] iPUSHBUTTON;
output        oINTERRUPT;

parameter C_BASEADDR = 8'h00;

wire [ 3: 0] s_isr;


picoblaze_pushbutton_intgen pushbutton_intgen(
  .iISR(s_isr),
  .oINT(oINTERRUPT)
);

picoblaze_pushbutton_busif #(.C_BASEADDR(C_BASEADDR)) pushbutton_busif(
  .iCLK(iCLK),
  .iRST_N(iRST_N),
  .iADDR(iADDR),
  .iDATAIN(iDATAIN),
  .iWR(iWR),
  .iRD(iRD),
  .oHC_DBUS(oHC_DBUS),
  .iPUSHBUTTON(iPUSHBUTTON),  
  .oISR(s_isr)  
);

endmodule