Graduate

Signed-off-by: Matt Strapp <matt@mattstrapp.net>

1 files changed, 0 insertions, 101 deletions

diff --git a/OLD/ee4363/mp1/mp12/mipspipe.v b/OLD/ee4363/mp1/mp12/mipspipe.v
deleted file mode 100644
index 41d244d..0000000
--- a/OLD/ee4363/mp1/mp12/mipspipe.v
+++ /dev/null
@@ -1,101 +0,0 @@
-// Incomplete behavioral model of MIPS pipeline
-
-module mipspipe(clock);
-   // in_out
-   input clock;
-
-   // Instruction opcodes
-   parameter LW = 6'b100011, SW = 6'b101011, BEQ = 6'b000100, nop = 32'b00000_100000, ALUop = 6'b0; 
-   reg [31:0] PC, // Program counter
-		  Regs[0:31],  // Register file
-			  IMemory[0:1023], DMemory[0:1023], // Instruction and data memories
-              IFIDIR, IDEXA, IDEXB, IDEXIR, EXMEMIR, EXMEMB, // pipeline latches
-              EXMEMALUOut, MEMWBValue, MEMWBIR; // pipeline latches
-
-   wire [4:0] IDEXrs, IDEXrt, EXMEMrd, MEMWBrd, MEMWBrt; // fields of pipeline latches
-   wire [5:0] EXMEMop, MEMWBop, IDEXop; // opcodes
-   wire [31:0] Ain, Bin; // ALU inputs
-
-   // Define fields of pipeline latches
-   assign IDEXrs = IDEXIR[25:21]; // rs field
-   assign IDEXrt = IDEXIR[20:16]; // rt field
-   assign EXMEMrd = EXMEMIR[15:11]; // rd field
-   assign MEMWBrd = MEMWBIR[15:11]; // rd field
-   assign MEMWBrt = MEMWBIR[20:16]; // rt field -- for loads
-   assign EXMEMop = EXMEMIR[31:26]; // opcode
-   assign MEMWBop = MEMWBIR[31:26]; // opcode
-   assign IDEXop = IDEXIR[31:26]; // opcode
-
-   // Inputs to the ALU come directly from the ID/EX pipeline latches
-   assign Ain = IDEXA;
-   assign Bin = IDEXB;
-   reg [5:0] i; //used to initialize registers
-   reg [10:0] j,k; //used to initialize registers
-
-   initial begin
-      PC = 0;
-      IFIDIR = nop; 
-      IDEXIR = nop; 
-      EXMEMIR = nop; 
-      MEMWBIR = nop; // no-ops placed in pipeline latches
-      // test some instructions
-      for (i=0;i<=31;i=i+1) Regs[i] = i; // initialize registers
-      IMemory[0] = 32'h00412820; // ADD OPCODE: 000000 00010 00001 00101 00000 100000
-      IMemory[1] = nop;
-      IMemory[2] = nop;
-      IMemory[3] = nop;
-      IMemory[4] = 32'h8CA30004; // First LW:   100011 00101 00011 00000 00000 000100
-      IMemory[5] = 32'h8C420000; // Second LW:  100011 00010 00010 00000 00000 000000
-      IMemory[6] = nop;
-      IMemory[7] = nop;
-      IMemory[8] = 32'h00A31825; // OR OPCODE:  000000 00101 00011 00011 00000 100101
-      IMemory[9] = nop;
-      IMemory[10] =nop;
-      IMemory[11] = nop;
-      IMemory[12] = 32'hACA30000; // SW:         101011 00101 00011 00000 00000 000000
-      for (j=13;j<=1023;j=j+1) IMemory[j] = nop;
-      DMemory[0] = 32'h00000000;
-      DMemory[1] = 32'hffffffff;
-      for (k=2;k<=1023;k=k+1) DMemory[k] = 0;
-   end
-   
-   always @ (posedge clock) 
-   begin
-      // FETCH: Fetch instruction & update PC
-      IFIDIR <= IMemory[PC>>2];
-	  PC <= PC + 4;
-    
-      // DECODE: Read registers 
-      IDEXA <= Regs[IFIDIR[25:21]]; 
-      IDEXB <= Regs[IFIDIR[20:16]]; // get two registers
-      
-	  IDEXIR <= IFIDIR; // pass along IR
-      
-      // EX: Address calculation or ALU operation
-      if ((IDEXop==LW) |(IDEXop==SW)) // address calculation
-         EXMEMALUOut <= IDEXA +{{16{IDEXIR[15]}}, IDEXIR[15:0]};
-      else if (IDEXop==ALUop) begin // ALU operation
-         case (IDEXIR[5:0]) // R-type instruction
-           32: EXMEMALUOut <= Ain + Bin; // add operation
-           37: EXMEMALUOut <= Ain | Bin; //or
-           default: ; // other R-type operations [to be implemented]
-         endcase
-      end
-   
-      EXMEMIR <= IDEXIR; EXMEMB <= IDEXB; //pass along the IR & B
-   
-      // MEM 
-      if (EXMEMop==ALUop) MEMWBValue <= EXMEMALUOut; //pass along ALU result
-      else if (EXMEMop == LW) MEMWBValue <= DMemory[EXMEMALUOut>>2]; // load
-      else if (EXMEMop == SW) DMemory[EXMEMALUOut>>2] <=EXMEMB; // store
-   
-      MEMWBIR <= EXMEMIR; //pass along IR
-   
-      // WB 
-      if ((MEMWBop==ALUop) & (MEMWBrd != 0)) // update registers if ALU operation and destination not 0
-		Regs[MEMWBrd] <= MEMWBValue; // ALU operation
-      else if ((MEMWBop == LW)& (MEMWBrt != 0)) // Update registers if load and destination not 0
-		Regs[MEMWBrt] <= MEMWBValue;
-    end
-
-endmodule