verilog文件读写教程

verilog文件读写教程

Reading and writing files from Verilog models
Introduction
This describes how you can read and write files in a Verilog model using a
set of user functions, based on the C stdio package. With these functions
you can perform file input and output directly in Verilog models without
having to learn C or the PLI. This code works with VCS, MTI, Verilog-XL,
and NC-Verilog (see $fread for one restriction).
Note that Synopsys' VCS 6.1, NC-Verilog 3.3, and MTI's ModelSim 5.5 offer
native support for the IEEE-1364 2001 standard. Verilog-XL does not support
these tasks except through this PLI application.
• Copyright
• Overview
• Differences between fileio and IEEE-1364 Verilog-2001 standard
• File Input Functions
• Restrictions and Caveats
• Reading pattern files
• Compa