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标题: 请教ISE综合的问题 [打印本页]

作者: sunfly6195000@1    时间: 2009-5-4 16:17     标题: 请教ISE综合的问题

才学fpga,很多东西都很迷惑,这个程序写完了,我不知道该如何处理综合后出现的警告,在网上查了一下,因为程序不同,出现同样的警告的原因不一样,希望高手指点一下!十分感谢!

module shift_reg (data_read,rst,data,s_buffer,note);
output reg [95:0] s_buffer;
output note;
input rst;
input [7:0] data;
input data_read;
reg note;
always @(posedge data_read,negedge rst)
begin
if (~rst)
begin
s_buffer<=0;
note<=0;
end
else
begin
s_buffer <= {s_buffer[87:0], data};
note<=1;
end
end
endmodule
出现的警告:
WARNING:Xst:2677 - Node <u3/s_buffer_95> of sequential type is unconnected in block <allall>.
......................................................................................................................................................
WARNING:Xst:2677 - Node <u3/s_buffer_4> of sequential type is unconnected in block <allall>.
WARNING:Xst:2677 - Node <u3/s_buffer_3> of sequential type is unconnected in block <allall>.
WARNING:Xst:2677 - Node <u3/s_buffer_2> of sequential type is unconnected in block <allall>.
WARNING:Xst:2677 - Node <u3/s_buffer_1> of sequential type is unconnected in block <allall>.

作者: sunfly6195000@1    时间: 2009-5-5 10:34

问题已经解决,谢谢!






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