//全局
`define RstEnable 1'b1
`define RstDisable 1'b0
`define ZeroWord 32'h00000000
`define WriteEnable 1'b1
`define WriteDisable 1'b0
`define ReadEnable 1'b1
`define ReadDisable 1'b0
`define AluOpBus 7:0
`define AluSelBus 2:0
`define InstValid 1'b0
`define InstInvalid 1'b1
`define Stop 1'b1
`define NoStop 1'b0
`define InDelaySlot 1'b1
`define NotInDelaySlot 1'b0
`define Branch 1'b1
`define NotBranch 1'b0
`define InterruptAssert 1'b1
`define InterruptNotAssert 1'b0
`define TrapAssert 1'b1
`define TrapNotAssert 1'b0
`define True_v 1'b1
`define False_v 1'b0
`define ChipEnable 1'b1
`define ChipDisable 1'b0


//指令
`define EXE_AND  6'b100100
`define EXE_OR   6'b100101
`define EXE_XOR 6'b100110
`define EXE_NOR 6'b100111
`define EXE_ANDI 6'b001100
`define EXE_ORI  6'b001101
`define EXE_XORI 6'b001110
`define EXE_LUI 6'b001111

`define EXE_SLL  6'b000000
`define EXE_SLLV  6'b000100
`define EXE_SRL  6'b000010
`define EXE_SRLV  6'b000110
`define EXE_SRA  6'b000011
`define EXE_SRAV  6'b000111

`define EXE_MOVZ  6'b001010
`define EXE_MOVN  6'b001011
`define EXE_MFHI  6'b010000
`define EXE_MTHI  6'b010001
`define EXE_MFLO  6'b010010
`define EXE_MTLO  6'b010011

`define EXE_SLT  6'b101010
`define EXE_SLTU  6'b101011
`define EXE_SLTI  6'b001010
`define EXE_SLTIU  6'b001011   
`define EXE_ADD  6'b100000
`define EXE_ADDU  6'b100001
`define EXE_SUB  6'b100010
`define EXE_SUBU  6'b100011
`define EXE_ADDI  6'b001000
`define EXE_ADDIU  6'b001001
`define EXE_CLZ  6'b100000
`define EXE_CLO  6'b100001

`define EXE_MULT  6'b011000
`define EXE_MULTU  6'b011001
`define EXE_MUL  6'b000010
`define EXE_MADD  6'b000000
`define EXE_MADDU  6'b000001
`define EXE_MSUB  6'b000100
`define EXE_MSUBU  6'b000101

`define EXE_DIV  6'b011010
`define EXE_DIVU  6'b011011

`define EXE_J  6'b000010
`define EXE_JAL  6'b000011
`define EXE_JALR  6'b001001
`define EXE_JR  6'b001000
`define EXE_BEQ  6'b000100
`define EXE_BGEZ  5'b00001
`define EXE_BGEZAL  5'b10001
`define EXE_BGTZ  6'b000111
`define EXE_BLEZ  6'b000110
`define EXE_BLTZ  5'b00000
`define EXE_BLTZAL  5'b10000
`define EXE_BNE  6'b000101

`define EXE_NOP 6'b000000
`define SSNOP 32'b00000000000000000000000001000000

`define EXE_SPECIAL_INST 6'b000000
`define EXE_REGIMM_INST 6'b000001
`define EXE_SPECIAL2_INST 6'b011100

//AluOp
`define EXE_AND_OP   8'b00100100
`define EXE_OR_OP    8'b00100101
`define EXE_XOR_OP  8'b00100110
`define EXE_NOR_OP  8'b00100111
`define EXE_ANDI_OP  8'b01011001
`define EXE_ORI_OP  8'b01011010
`define EXE_XORI_OP  8'b01011011
`define EXE_LUI_OP  8'b01011100   

`define EXE_SLL_OP  8'b01111100
`define EXE_SLLV_OP  8'b00000100
`define EXE_SRL_OP  8'b00000010
`define EXE_SRLV_OP  8'b00000110
`define EXE_SRA_OP  8'b00000011
`define EXE_SRAV_OP  8'b00000111

`define EXE_MOVZ_OP  8'b00001010
`define EXE_MOVN_OP  8'b00001011
`define EXE_MFHI_OP  8'b00010000
`define EXE_MTHI_OP  8'b00010001
`define EXE_MFLO_OP  8'b00010010
`define EXE_MTLO_OP  8'b00010011

`define EXE_SLT_OP  8'b00101010
`define EXE_SLTU_OP  8'b00101011
`define EXE_SLTI_OP  8'b01010111
`define EXE_SLTIU_OP  8'b01011000   
`define EXE_ADD_OP  8'b00100000
`define EXE_ADDU_OP  8'b00100001
`define EXE_SUB_OP  8'b00100010
`define EXE_SUBU_OP  8'b00100011
`define EXE_ADDI_OP  8'b01010101
`define EXE_ADDIU_OP  8'b01010110
`define EXE_CLZ_OP  8'b10110000
`define EXE_CLO_OP  8'b10110001

`define EXE_MULT_OP  8'b00011000
`define EXE_MULTU_OP  8'b00011001
`define EXE_MUL_OP  8'b10101001
`define EXE_MADD_OP  8'b10100110
`define EXE_MADDU_OP  8'b10101000
`define EXE_MSUB_OP  8'b10101010
`define EXE_MSUBU_OP  8'b10101011

`define EXE_DIV_OP  8'b00011010
`define EXE_DIVU_OP  8'b00011011

`define EXE_J_OP  8'b01001111
`define EXE_JAL_OP  8'b01010000
`define EXE_JALR_OP  8'b00001001
`define EXE_JR_OP  8'b00001000
`define EXE_BEQ_OP  8'b01010001
`define EXE_BGEZ_OP  8'b01000001
`define EXE_BGEZAL_OP  8'b01001011
`define EXE_BGTZ_OP  8'b01010100
`define EXE_BLEZ_OP  8'b01010011
`define EXE_BLTZ_OP  8'b01000000
`define EXE_BLTZAL_OP  8'b01001010
`define EXE_BNE_OP  8'b01010010

`define EXE_NOP_OP    8'b00000000

//AluSel
`define EXE_RES_LOGIC 3'b001
`define EXE_RES_SHIFT 3'b010
`define EXE_RES_MOVE 3'b011	
`define EXE_RES_ARITHMETIC 3'b100	
`define EXE_RES_MUL 3'b101
`define EXE_RES_JUMP_BRANCH 3'b110

`define EXE_RES_NOP 3'b000


//指令存储器inst_rom
`define InstAddrBus 31:0
`define InstBus 31:0
`define InstMemNum 131071
`define InstMemNumLog2 17


//通用寄存器regfile
`define RegAddrBus 4:0
`define RegBus 31:0
`define RegWidth 32
`define DoubleRegWidth 64
`define DoubleRegBus 63:0
`define RegNum 32
`define RegNumLog2 5
`define NOPRegAddr 5'b00000

//除法div
`define DivFree 2'b00
`define DivByZero 2'b01
`define DivOn 2'b10
`define DivEnd 2'b11
`define DivResultReady 1'b1
`define DivResultNotReady 1'b0
`define DivStart 1'b1
`define DivStop 1'b0