id.dit

可以自由开发的MIPS仿真器模型(.exe),指令执行动画显示.通过修改graphics和对应的元件和互联文件(.dit)可以自己画流水线,其中.dit文件使用简单的硬件描述语言编写.而mipsit是

// create the components in the ID stage
object CControl Control
object CShiftLeft2 ShiftLeft2
object CRegisterBank RegisterBank
object CSignExtend SignExtend
object CRegIdEx RegIdEx
// this one is invisible...
object CInstrSplit InstrSplit
object CMux2 RegDstMux
object CBranchCmp BranchCmp

// CONNECT THINGS

// the Control Unit:
connect RegIfId.out_Instruction Control.Instruction

// register bank:
// (some are done later...)
connect InstrSplit.rs RegisterBank.ReadRegister1
connect InstrSplit.rt RegisterBank.ReadRegister2

// signextend:
connect RegIfId.out_Instruction SignExtend.In

// instrsplit
connect RegIfId.out_Instruction InstrSplit.Instruction

// RegDst Mux
connect Control.RegDst RegDstMux.Control
connect InstrSplit.rt RegDstMux.In0
connect InstrSplit.rd RegDstMux.In1

// Branch cmp:
connect RegisterBank.ReadData1 BranchCmp.In0
connect RegisterBank.ReadData2 BranchCmp.In1

// the Control Unit from the ID stage:
connect BranchCmp.Out Control.BranchCondition



// the pipe register:
connect Control.RegWrite RegIdEx.in_RegWrite
connect Control.RegDst RegIdEx.in_RegDst
connect Control.ALUSrc RegIdEx.in_ALUSrc
connect Control.NotJal RegIdEx.in_NotJal
connect Control.ALUOp RegIdEx.in_ALUOp
connect Control.MemRead RegIdEx.in_MemRead
connect Control.MemWrite RegIdEx.in_MemWrite
connect Control.MemToReg RegIdEx.in_MemToReg
connect Control.BranchControl RegIdEx.in_BranchControl
connect RegIfId.out_PC RegIdEx.in_PC
connect RegisterBank.ReadData1 RegIdEx.in_Data0
connect RegisterBank.ReadData2 RegIdEx.in_Data1
connect SignExtend.Out RegIdEx.in_Immediate

connect RegDstMux.Out RegIdEx.in_WbReg


// Connect the clock

connect clk.Ph0 RegIdEx.Ph0
connect clk.Ph1 RegIdEx.Ph1

// the register bank is kinda clocked...
connect clk.Ph2 RegisterBank.Ph2

connect RegIfId.out_Instruction RegIdEx.in_Instr

// probes
probe InstrSplit.rs 271 252 16 2 0
probe InstrSplit.rt 271 288 16 2 0

probe RegIfId.out_Instruction 293 478 16 4 1
probe SignExtend.Out 382 460 16 8 1

probe RegDstMux.Out 343 550 16 2 0

probe RegisterBank.ReadData1 405 245 16 8 1
probe RegisterBank.ReadData2 405 328 16 8 1
//probe Control.BranchControl 343 550 16 2 0