ex.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 objects in this stage

object CMux2 AluMuxA
object CMux2 AluMuxB
object CiAlu Alu
object CAluControl AluControl
object CMux2 RegDstMux
object CMux2 NotJalMux
object CConstant31 Constant31
object CRegExMem RegExMem


// connections:

// to forwaring unit
connect NotJalMux.Out ForwardingUnit.EX_WriteRegister
connect RegIdEx.out_RegWrite ForwardingUnit.EX_RegWrite

// to the forward muxes
connect Alu.Out ForwardMuxA.In2
connect Alu.Out ForwardMuxB.In2


// upper alu mux
connect RegIdEx.out_PC AluMuxA.In0
connect RegIdEx.out_Data0 AluMuxA.In1
connect RegIdEx.out_NotJal AluMuxA.Control

// lower alu mux
connect RegIdEx.out_Data1 AluMuxB.In0
connect RegIdEx.out_Immediate AluMuxB.In1
connect RegIdEx.out_ALUSrc AluMuxB.Control

// Alu:
connect AluMuxA.Out Alu.InA
connect AluMuxB.Out Alu.InB
connect AluControl.Out Alu.Operation

// Alu Control:
connect RegIdEx.out_ALUOp AluControl.ALUOp
connect RegIdEx.out_Immediate AluControl.Func

// RegDst Mux
connect RegIdEx.out_RegDst RegDstMux.Control
connect RegIdEx.out_Instr20_16 RegDstMux.In0
connect RegIdEx.out_Instr15_11 RegDstMux.In1

// NotJalMux:
connect RegIdEx.out_NotJal NotJalMux.Control
connect Constant31.Out NotJalMux.In0
connect RegDstMux.Out NotJalMux.In1

// the strange constant (this keeps it happy)
connect RegIdEx.out_NotJal Constant31.In

// pipline register:
connect RegIdEx.out_RegWrite RegExMem.in_RegWrite
connect RegIdEx.out_RegDst RegExMem.in_RegDst
connect RegIdEx.out_MemRead RegExMem.in_MemRead
connect RegIdEx.out_MemWrite RegExMem.in_MemWrite
connect RegIdEx.out_MemToReg RegExMem.in_MemToReg
connect Alu.Out RegExMem.in_AluResult
connect RegIdEx.out_Data1 RegExMem.in_WriteData
connect NotJalMux.Out RegExMem.in_WbReg


// clock
connect clk.Ph0 RegExMem.Ph0
connect clk.Ph1 RegExMem.Ph1

connect RegIdEx.out_Instr RegExMem.in_Instr


// probes:
// connect RegIdEx.out_PC AluMuxA.In0
// connect RegIdEx.out_Data0 AluMuxA.In1

probe  RegIdEx.out_PC 570 299 16 8 1
probe RegIdEx.out_Data0 535 370 16 8 1
probe AluMuxA.Out 619 327 16 8 1 


// lower alu mux
// connect RegIdEx.out_Data1 AluMuxB.In0
// connect RegIdEx.out_Immediate AluMuxB.In1
probe RegIdEx.out_Data1 515 390 16 8 1
//probe RegIdEx.out_Immediate 515 463 16 8 1
probe AluMuxB.Out 582 421 16 8 0


probe NotJalMux.Out 457 650 16 2 0
probe RegIdEx.out_RegWrite 443 660 16 1 0


probe RegIdEx.out_RegWrite 668 221 16 1 0
probe Alu.Out 665 359 16 8 1
probe NotJalMux.Out 627 557 16 2 0

probe RegIdEx.out_ALUOp 578 475 16 2 0
probe AluControl.Out 638 423 16 2 0
probe RegIdEx.out_Immediate 536 492 16 8 0


probe RegIdEx.out_RegDst 544 544 16 2 4
probe RegIdEx.out_Instr20_16 520 550 16 2 0
probe RegIdEx.out_Instr15_11 520 565 16 2 0


probe RegIdEx.out_NotJal 605 545 16 2 4
probe RegIdEx.out_NotJal 598 346 16 2 4

probe RegIdEx.out_Instr 514 4 16 25 2


probe RegIdEx.out_ALUSrc 559 411 16 2 4