?? asyn_comp.v
字號:
//異步比較模塊
module asyn_comp
#(
parameter
ADDR_WIDTH = 4
)
(
output wire asyn_empty,
output wire asyn_full,
input wire rst_n,
input wire [ADDR_WIDTH-1 : 0] w_ptr,
input wire [ADDR_WIDTH-1 : 0] r_ptr
);
wire dirset;
wire dirclr;
assign dirset = (w_ptr[ADDR_WIDTH-1] ^ r_ptr[ADDR_WIDTH-2]) & (~(w_ptr[ADDR_WIDTH-2] ^ r_ptr[ADDR_WIDTH-1]));
assign dirclr = (~(w_ptr[ADDR_WIDTH-1] ^ r_ptr[ADDR_WIDTH-2])) & (w_ptr[ADDR_WIDTH-2] ^ r_ptr[ADDR_WIDTH-1]);
wire direction;
assign direction = ~((~(dirset | direction)) | dirclr | (~rst_n));
assign asyn_empty = ~((w_ptr == r_ptr) && (direction == 1'b0));
assign asyn_full = ~((w_ptr == r_ptr) && (direction == 1'b1));
endmodule
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -