Verilog 的数据类型主要是线网和变量,即 wire, reg, integer,都是四值逻辑(0、1、x、z) 在verilog基础上,SV增加了二值逻辑(0、1)变量来简化运算, 包含 bit, byte, shortint, int, longint 变量。 SV中logic与verilog中的reg变量对应,为四值逻辑的无符号数;bit为二值逻辑的无符号数; byte, int, short...
Mentor SystemVerilog training offers intense, practical instruction for verification engineers including best practice usage of SystemVerilog
(1) 定位 find with, find_first with, find_last with找的是数组内元素 find_index with, find_first_index with , find_last_index with找的是索引号 查看代码 查看代码 modulearray_locator;intarray[9] = '{1,2,3,4,5,6,7,8,9};intres[$];initialbeginres= array.find(x)with(x>3);$displ...
This paper summarizes the problems associated with the use of the full_case and parallel_case directives and details how the new SystemVerilog priority and unique keywords solve these problems while adding valuable RTL synthesis capabilities to the new and powerful SystemVerilog language. SNUG2005 ...
I´m newbie on Verilog, actually also in System Verilog, but worked long time ago with VHDL and C++ languages. I used a template of a Moore state machine from ALTERA for Verilog, and performed some changes in order to start the learning. However, during simulat...
Soft Constraints for SystemVerilog By Akiva Michelson – Ace Verification © 2008 Ace Verification All rights reserved What are Soft constraints: Soft constraints are constraints which hold true unless contradicted by another constraint. For example if I have the following constraints: 1. soft a =...
`soft_eq(b1,32); // b1 will be equal to 32 `soft_lt(b2,48); // b2 will be generated less then 48 } endclass 1 In my opinion turning off constraints is a poor programming practice which yields far more problems than it solves...
(its value at the next time moment): ݔ′ • Each set and relation is represented by its characteristic function • E.g., ܴ = ݅ ⊕ ′ • In SystemVerilog there is a notation of next value: • $future_gclk(x) • E.g., ݅⊕′ corresponds to i ^ $future...
Algorithm 2 Verilog fragment of a register slice always @(posedge clock or negedge reset_l) if ( ˜reset_l ) RegisterA_SliceB <= 3’h0; else if (wstrobe & (addr == 10’h17)) RegisterA_SliceB <= RegisterA_SliceB & ˜mask[7:5] | wdata[7:5] & mask[7:5]; Furthermor...
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