system_top.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 system_top(
  iRST_N,
  iCLK,
  oHCCP,
  oHCSI,

  oHSYNC,
  oVSYNC,
  oVGA_RED,
  oVGA_GREEN,
  oVGA_BLUE,
  iPUSHBUTTON  
);

input 	iRST_N;
input 	iCLK;
input[ 3: 0] iPUSHBUTTON;
output  oHCCP;
output  oHCSI;

output         oHSYNC;
output         oVSYNC;
output [ 2: 0] oVGA_RED;
output [ 2: 0] oVGA_GREEN;
output [ 2: 0] oVGA_BLUE;


wire  [7:0] port_id;
wire   	   write_strobe;
wire   	   read_strobe;
wire  [7:0] out_port;
wire  [7:0] in_port;
wire   	   interrupt;
wire   	   interrupt_ack;
wire   	   reset;
wire   	   iCLK;
wire [ 9: 0] 	address;
wire [17: 0] instruction;

wire [ 7: 0] s_ADDR;
wire [ 7: 0] s_DATARD_0;
wire [ 7: 0] s_DATARD_1;
wire [ 7: 0] s_DATARD_2;
wire [ 7: 0] s_DATAWR;
wire       s_RD;
wire       s_WR;

assign reset = ~iRST_N;

parameter C_BASEADDR_HC164 = 8'h00;
parameter C_BASEADDR_VGA   = 8'h10;
parameter C_BASEADDR_PUSHBUTTON = 8'h20;
//----------------------------------------------------------------------------------
//
// declaration of KCPSM3
//
//
// declaration of program ROM
//
//----------------------------------------------------------------------------------
//
// Start of test circuit description
//

kcpsm3 processor(
  .address(address),
  .instruction(instruction),
  .port_id(port_id),
  .write_strobe(write_strobe),
  .out_port(out_port),
  .read_strobe(read_strobe),
  .in_port(in_port),
  .interrupt(interrupt),
  .interrupt_ack(interrupt_ack),
  .reset(reset),
  .clk(iCLK)
);

ram_inst program(
	.address(address),
	.instruction(instruction),
	.clk(iCLK)
);

pbus pbus_inst(
  .iOUT_PORT(out_port),
  .iREAD_STROBE(read_strobe),
  .iWRITE_STROBE(write_strobe),
  .iPORT_ID(port_id),
  .oIN_PORT(in_port),
  
  .iDATARD_0(s_DATARD_0),//8'h0
  .iDATARD_1(s_DATARD_1),
  .iDATARD_2(s_DATARD_2),
  
  .oADDR(s_ADDR),
  .oRD(s_RD),
  .oWR(      s_WR),
  .oDATAWR(s_DATAWR)
);

    		
picoblaze_hc164 #(.C_BASEADDR(C_BASEADDR_HC164)) hc164(
  .iCLK(          iCLK),
  .iRST_N(      iRST_N),
  .iADDR(       s_ADDR),
  .iDATAIN(   s_DATAWR),
  .iWR(           s_WR),
  .iRD(           s_RD),    
  .oHC_DBUS(s_DATARD_0), 
  .oHCCP(        oHCCP),
  .oHCSI(        oHCSI)
);

picoblaze_vga #(.C_BASEADDR(C_BASEADDR_VGA))vga_inst(
  .iRST_N(        iRST_N),
  .iCLK(            iCLK), // 50MHZ

  .iADDR(         s_ADDR), // PBus Bus Address
  .iDATAIN(     s_DATAWR), // PBus Data in
  .iWR(             s_WR), // PBus Write operation signal
  .iRD(             s_RD), // PBus Read operation signal
  .oHC_DBUS(  s_DATARD_1), // PBus Data Out  
 
  .oHSYNC(        oHSYNC),
  .oVSYNC(        oVSYNC),
 
  .oVGA_RED(    oVGA_RED),
  .oVGA_GREEN(oVGA_GREEN),
  .oVGA_BLUE(  oVGA_BLUE)

);    		

picoblaze_pushbutton #(.C_BASEADDR(C_BASEADDR_PUSHBUTTON))pushbutton_inst(
  .iCLK(              iCLK),    
  .iRST_N(          iRST_N),  
  .iADDR(           s_ADDR),   
  .iDATAIN(       s_DATAWR), 
  .iWR(               s_WR),     
  .iRD(               s_RD),     
  .iPUSHBUTTON(iPUSHBUTTON),
  .oHC_DBUS(    s_DATARD_2),
  .oINTERRUPT(   interrupt)

);

endmodule

//----------------------------------------------------------------------------------
//
// END OF FILE EMBEDDED_KCPSM3.V
//
//----------------------------------------------------------------------------------