hi i dont know how to make a top module and create instances of other modules in it.
my top module is CHK and other modules are BUFFER1, BUFFER2 and BUFFER3.
now i want to create their instances in my top module, moreover i want to know what will be the format of the top module, as in what inputs and outputs will i declare in it, (i/os of all the 3 modules or wat?)
this is my buffer1 module:
module buffer1(clk,a,led1,led2,sum,sum1,buff1a,buff1b);
input clk; input a;
output led1; output led2; output [19:0] sum; output [15:0] sum1; output [127:0] buff1a; output [127:0] buff1b;
parameter num1 = 15'hFFFF;
reg led1; reg led2; reg [19:0] sum; reg [15:0] sum1; reg [127:0] buff1a; reg [127:0] buff1b;
always @(clk) begin
if(a==1) begin buff1a = 127'hcda9005095209e7d0de2686650101032; buff1b= 127'h1a6f0000c0a806f3453f602800060014;//correct packet sum= (buff1a[3:0]+buff1a[7:4]+buff1a[11:8]+buff1a[15:12]+buff1a[19:16]+buff1a[23:20]+buff1a[27:24]+buff1a[31:28]+buff1a[35:32]+buff1a[39:36]+buff1a[43:40]+buff1a[47:44]+buff1a[51:48]+buff1a[55:52]+buff1a[59:56]+buff1a[63:60]+buff1a[67:64]+buff1a[71:68]+buff1a[75:72]
+buff1a[79:76]+buff1a[83:80]+buff1a[87:84]+buff1a[91:88]+buff1a[95:92]+buff1a[99:96]+buff1a[103:100]+buff1a[107:104]+buff1a[111:108]+buff1a[115:112]+buff1a[119:116]+buff1a[123:120]+buff1a[127:124]+buff1b[3:0]+buff1b[7:4]+buff1b[11:8]+buff1b[15:12]+buff1b[19:16]+buff1b[23:20]+buff1b[27:24]+buff1b[31:28]+buff1b[35:32]+buff1b[39:36]+buff1b[43:40]+buff1b[47:44]+buff1b[51:48]+buff1b[55:52]+buff1b[59:56]+buff1b[63:60]+buff1b[67:64]+buff1b[71:68]+buff1b[75:72]
+buff1b[79:76]+buff1b[83:80]+buff1b[87:84]+buff1b[91:88]+buff1b[95:92]+buff1b[99:96]+buff1b[103:100]+buff1b[107:104]+buff1b[111:108]+buff1b[115:112]+buff1b[119:116]+buff1b[123:120]+buff1b[127:124]); sum1= (sum[15:0]+sum[19:16]);
if(sum1==num1) begin led1=1; end
else
led2=1;
end
this is buffer2:
module buffer2(clk,b,led1,led2,sum,sum1,buff1a,buff1b);
input clk; input b;
output led1; output led2; output [19:0] sum; output [15:0] sum1; output [127:0] buff2a; output [127:0] buff2b;
parameter num1 = 15'hFFFF;
reg led1; reg led2; reg [19:0] sum; reg [15:0] sum1; reg [127:0] buff2a; reg [127:0] buff2b;
always @(clk) begin
if(b==1) begin //buff2 =
255'hcda9005095209e7d0de26866501010321a7f0000c0a806f3453f602800060014;// incorrect buff2a= 127'hcda9005095209e7d0de2686650101032; buff2b= 127'h1a7f0000c0a806f3453f602800060014; sum= (buff2a[3:0]+buff2a[7:4]+buff2a[11:8]+buff2a[15:12]+buff2a[19:16]+buff2a[23:20]+buff2a[27:24]+buff2a[31:28]+buff2a[35:32]+buff2a[39:36]+buff2a[43:40]+buff2a[47:44]+buff2a[51:48]+buff2a[55:52]+buff2a[59:56]+buff2a[63:60]+buff2a[67:64]+buff2a[71:68]+buff2a[75:72]
+buff2a[79:76]+buff2a[83:80]+buff2a[87:84]+buff2a[91:88]+buff2a[95:92]+buff2a[99:96]+buff2a[103:100]+buff2a[107:104]+buff2a[111:108]+buff2a[115:112]+buff2a[119:116]+buff2a[123:120]+buff2a[127:124]+buff2b[3:0]+buff2b[7:4]+buff2b[11:8]+buff2b[15:12]+buff2b[19:16]+buff2b[23:20]+buff2b[27:24]+buff2b[31:28]+buff2b[35:32]+buff2b[39:36]+buff2b[43:40]+buff2b[47:44]+buff2b[51:48]+buff2b[55:52]+buff2b[59:56]+buff2b[63:60]+buff2b[67:64]+buff2b[71:68]+buff2b[75:72]
+buff2b[79:76]+buff2b[83:80]+buff2b[87:84]+buff2b[91:88]+buff2b[95:92]+buff2b[99:96]+buff2b[103:100]+buff2b[107:104]+buff2b[111:108]+buff2b[115:112]+buff2b[119:116]+buff2b[123:120]+buff2b[127:124]); sum1= (sum[15:0]+sum[19:16]);
if(sum1==num1) begin led1=1; end else led2=1;
end
endmodule
this is buffer3 module:
module buffer3(clk,c,led1,led2,sum,sum1,buff3a,buff3b);
input clk; input c;
output led1; output led2; output [19:0] sum; output [15:0] sum1; output [127:0] buff3a; output [127:0] buff3b;
parameter num1 = 15'hFFFF;
reg led1; reg led2; reg [19:0] sum; reg [15:0] sum1; reg [127:0] buff3a; reg [127:0] buff3b;
always @(clk) begin
if(c==1) begin buff3a = 127'h0050cda90de2b8b695209e7e5010005c; //correct buff3b =127'h2a440000453fb028c0a806f300060014; sum= (buff3a[3:0]+buff3a[7:4]+buff3a[11:8]+buff3a[15:12]+buff3a[19:16]+buff3a[23:20]+buff3a[27:24]+buff3a[31:28]+buff3a[35:32]+buff3a[39:36]+buff3a[43:40]+buff3a[47:44]+buff3a[51:48]+buff3a[55:52]+buff3a[59:56]+buff3a[63:60]+buff3a[67:64]+buff3a[71:68]+buff3a[75:72]
+buff3a[79:76]+buff3a[83:80]+buff3a[87:84]+buff3a[91:88]+buff3a[95:92]+buff3a[99:96]+buff3a[103:100]+buff3a[107:104]+buff3a[111:108]+buff3a[115:112]+buff3a[119:116]+buff3a[123:120]+buff3a[127:124]+buff3b[3:0]+buff3b[7:4]+buff3b[11:8]+buff3b[15:12]+buff3b[19:16]+buff3b[23:20]+buff3b[27:24]+buff3b[31:28]+buff3b[35:32]+buff3b[39:36]+buff3b[43:40]+buff3b[47:44]+buff3b[51:48]+buff3b[55:52]+buff3b[59:56]+buff3b[63:60]+buff3b[67:64]+buff3b[71:68]+buff3b[75:72]
+buff3b[79:76]+buff3b[83:80]+buff3b[87:84]+buff3b[91:88]+buff3b[95:92]+buff3b[99:96]+buff3b[103:100]+buff3b[107:104]+buff3b[111:108]+buff3b[115:112]+buff3b[119:116]+buff3b[123:120]+buff3b[127:124]); sum1= (sum[15:0]+sum[19:16]); if(sum1==num1) begin led1=1; end else led2=1;
end
endmodule
now i just want to create the instances in the top module thats it so what would be the code like?
module chk()
i want to know the syntax n all
endmodule
thanks