sub_one11.v

这个是用可编程器件进行仿真CPU的程序

//**************************************************
//** Revision    :  0.1
//** File name   :  sub_one11.v
//** Module name :  sub_one11
//** Discription :  A 11-bit integer substracted with 1
//** Simulator   :  Max+plus II
//** Synthesizer :  Max+plus II
//** Author      :  IamFree
//** Last modified:    @ 2006///
//** Created date:  2006/03/09
//**************************************************

module sub_one11(s1_O,s1_I);

//Parameter define
parameter width=11;

//Port define
output [width-1:0] s1_O;
input  [width-1:0] s1_I;

//Port type
reg    [width-1:0] s1_O;

//Body
always @(s1_I)
 s1_O=s1_I-11'b0000_0000_001;

endmodule