E203 蜂鸟 RISC-V处理器代码阅读笔记之指令预取模块1(指令微译码) e203_ifu_minidec.v

本文链接：https://blog.youkuaiyun.com/thundersnark/article/details/105881991

本文档详细记录了作者学习RISC-V架构中蜂鸟E203处理器的指令预取模块——e203_ifu_minidec.v的源码阅读过程。作者分享了自己对模块接口和关键内部信号的理解，并附带了详细的注释说明，旨在帮助读者理解RISC-V处理器的指令预取与微译码工作原理。

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这个文章记录了我学习RISC-V蜂鸟E203处理器的学习历程
这是我正式阅读代码学习的第2个源代码文件
针对代码的学习，我结合自己的理解对每个module的接口，以及内部关键信号做了详细的注释说明
原创不易，请保护版权，转载联系作者，并请注明出处，标出原始链接_谢谢~~
e203_ifu_minidec.v

/*                                                                      
 Copyright 2017 Silicon Integrated Microelectronics, Inc.                
                                                                         
 Licensed under the Apache License, Version 2.0 (the "License");         
 you may not use this file except in compliance with the License.        
 You may obtain a copy of the License at                                 
                                                                         
     http://www.apache.org/licenses/LICENSE-2.0                          
                                                                         
  Unless required by applicable law or agreed to in writing, software    
 distributed under the License is distributed on an "AS IS" BASIS,       
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and     
 limitations under the License.                                          
 */                                                                      
                                                                         
                                                                         
                                                                         
//=====================================================================
//--        _______   ___
//--       (   ____/ /__/
//--        \ \     __
//--     ____\ \   / /
//--    /_______\ /_/   MICROELECTRONICS
//--
//=====================================================================
// Designer   : Bob Hu
//
// Description:
//  The mini-decode module to decode the instruction in IFU