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bitmips2019's Issues
Bug
- id模块输出的cp0_read_addr_o是xx
- cp0模块的flush_o是x
- 一旦出现一个延时槽后，id模块的now_in_delayslot和next_in_delayslot就一直是1
- id模块160行，不应该先判断 funct,根据funct来判断指令类型么？你是先判断的shamt,这样的话你这样0x00000c00指令就会写reg[1],这条应该是nop
- 还是id 模块问题，I型指令根据op判断，你有一些还是放在 op=0的判断里了。
架构图讨论
基本能看懂，但是个别信号还有有点疑问
- exe_aluop_i 信号，exe_regfile_write_addr_i 信号。这两信号是从exe级来的吗？具体作用还是不太懂。
- mem_to_reg_o是一个控制信号吗？（控制写回级写入寄存器堆的数据来自哪）
- id_stall_request 是load指令对应的阻塞请求吗
- 那个pc_return_addr也需要往后面流水吧，他不是也要回写到regfile吗？但你的id/exe模块没有这个入口
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