在VerilogHDL模型中,所有时延都用单位时间表述。使用`timescale编译器指令将时间单位与实际时间相关联。该指令用于定义时延的单位和时延精度。`timescale编译器指令格式为: imescaletime_unit/time_precision time_unit和time_precision由值1、10、和100以及单位s、ms、us、ns、ps和fs组成。例如: `imescale1ns/100ps...
When setting time scales for Verilog simulations, the decimal point is determined by the time_unit and any additional precision beyond that is lost when using timestamps. It is irrelevant to consider the total number of bits of a real number, as accessing individual bits is not possible. Tabl...
// Declare the timescale where time_unit is 1ns// and time_precision is 1ps`timescale1ns/1ps// NOTE: Testbench is the same as in previous examplemoduletb;// To understand the effect of timescale, let us// drive a signal with some values after some delayregval;initialbegin// Initiali...
在VerilogHDL模型中,所有时延都用单位时间表述。使用`timescale编译器指令将时间单位与实际时间相关联。该指令用于定义时延的单位和时延精度。 `timescale编译器指令格式为: imescaletime_unit/time_precision time_unit和time_precision由值1、10、和100以及单位s、ms、u s、ns、ps和fs组成。例如: `imescale1ns/...
option to the timescale directive in the generated Verilog orSystemVerilogcode. You can customize the default timescale and specify a valid, compilable timescale directive. The Verilog andSystemVeriloglanguages uses this directive to determine the time units and the precision for calculating delay ...
However this approach may make it difficult to compile with a different timescale precision (value following the oblique) without altering each file. Many compilers and simulators also provide an option to override default timescale values which will be applied to all modules....
2276 - NC-Verilog, ncelab - "*F,CUMSTS: Timescale directive missing on one or more modules" Description General Description: When simulating with NC-Verilog, what does the following error mean? "ncelab: *F,CUMSTS: Timescale directive missing on one or more modules." Solution The `timescale...
>>About precision, I thiink the smallest one will be selected but still not sure about it. Yes smallest precision and unit will take for total simulation but the it will not use in the modules. “-timescale” normally usefull to mention timescale for the modules which left without mention...
门级仿真的速度非常慢,所以关注了一下和速度相关的 TimeScale 的东西。对于 TimeScale 的精确定义,可以参考 Veriog 的 1364 标准。...简要说,TimeScale 分 time unit 和 time precision 两部分,用符号 / 分割。...整个 design 中可能出现多个...
Specifies the simulation resolution. The resolution should be specified as a combination of a number and a time unit: fs, ps, ns, us, ms. If the -t argument is omitted, the resolution is determined automatically. In Verilog designs the maximum time precision specified with thetimescale direct...