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日期:2025-09-28
Version 1.1 (14 th October 2003) 4 The Dangers of Living with an X 1 Introduction The aim of this paper is to raise awareness of dangerous X issue s in Verilog RTL and introduce techniques to analyze otherwise undetected bugs in RTL designs. New ......
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日期:2025-09-27
SIPO module sipomod(clk,clear, si, po); input clk, si,clear; output [3:0] po; reg [3:0] tmp; reg [3:0] po; always @(posedge clk) begin if (clear) tmp...
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日期:2025-09-30
Solving Verilog X-issues by Sequentially Comparing a design with itself! SNUG Boston 2005 Version 1.4, 144 th September 2005 1.3 Motivation ARM’s motivation for sequentially comparing a design with itself includes: 1. Avoiding the dangers of X explained i...
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日期:2025-09-29
(A[2]==1) is a logical expression the & is a bitwise operator, although either works
it would be better ......
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日期:2025-10-02
9 Feb 2014 ... space.gif. Note: If any operand is x or z, then the result of that test is treated as
false (0). space.gif....
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日期:2025-09-27
14 Oct 2003 ... The semantics of X in Verilog RTL are extremely dangerous as RTL bugs can be
masked, allowing....
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日期:2025-10-02
type in Verilog. High impedance, floating. Z. Unknown logic value. X ....
simulation: If sel_i is undefined we want....
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日期:2025-09-28
2011年12月7日 ... Z, 高阻抗, 三態緩衝器的輸出,高阻抗斷線. X, 未定值, 像是線路未初始化之前,以及
有0,1 兩者衝突的線路 ......