VU User’s Manual Users

• VU USER'S MANUAL
  • 6th Edition, April 2002
• About This Manual
• Changes Since Release of 5th Edition
• VU Overview
  • VPU Structure
    • Upper Execution Unit
    • Lower Execution Unit
    • Floating-Point Registers
    • Integer Register
    • VU Mem
    • Micro Mem
  • VU Execution Mode
  • VU Operation Status
    • Ready State
    • Run State
    • Stop State
  • VU Usage
    • VU1 Usage Outline
    • VU0 Usage Outline
• Data/Calculation Basic Specifications
  • Data Format
    • Floating-Point Values
    • Fixed-Point Values
  • Rounding Off Floating-Point Values
  • Exception Processing
  • Differences from IEEE 754
• Micro Mode
  • Micro Mode Register Set
    • Floating-Point Registers
    • Integer Registers
    • ACC Registers
    • I Register
    • Q Register
    • R Register
    • P Register
  • Micro Instruction Set Overview
    • Upper Instructions
    • Lower Instructions
  • Flags
    • MAC Flags
    • Status Flags (SF)
    • Clipping Flags (CF)
    • Flag Set Instructions
    • Flag Changes for Each Instruction
    • Flag Changes for Exception Occurrences
  • Pipeline Operation
    • Hazards
    • Upper Instruction and Lower Instruction
    • Priority for Writing to a Register
    • FMAC Pipeline
    • FDIV Pipeline
    • EFU Pipeline
    • IALU Pipeline
    • Conditional Branching and Pipeline
    • XGKICK Pipeline
  • Micro Subroutine Execution
    • How to Execute a Micro Subroutine
    • How to Terminate a Micro Subroutine
    • Operation of Execution and Termination
  • Other Functions
    • Data Transfer with VU Mem/Micro Mem
    • Debug Support Function
• Micro Mode Instruction Reference
  • Micro Mode Instruction Set
    • Types of Upper Instruction
    • Types of Lower Instructions
    • Operation Fields for Micro Instructions
  • Upper Instruction Reference
    • ABS : Absolute Value
    • ADD : Add
    • ADDi : Add to I Register
    • ADDq : Add to Q Register
    • ADDbc : Broadcast Add
    • ADDA : Add; to Accumulator
    • ADDAi : Add I Register; to Accumulator
    • ADDAq : Add Q Register; to Accumulator
    • ADDAbc : Broadcast Add; to Accumulator
    • CLIP : Clipping Judgment
    • FTOI0 : Convert to Fixed Point
    • FTOI4 : Convert to Fixed Point
    • FTOI12 : Convert to Fixed Point
    • FTOI15 : Convert to Fixed Point
    • ITOF0 : Convert to Floating-Point Number
    • ITOF4 : Convert to Floating-Point Number
    • ITOF12 : Convert to Floating-Point Number
    • ITOF15 : Convert to Floating-Point Number
    • MADD : Product Sum
    • MADDi : Product Sum; with I Register
    • MADDq : Product Sum; by Q Register
    • MADDbc : Broadcast Product Sum
    • MADDA : Product Sum; to Accumulator
    • MADDAi : Product Sum; by I register, to Accumulator
    • MADDAq : Product Sum; by Q Register, to Accumulator
    • MADDAbc : Broadcast Product Sum; to Accumulator
    • MAX : Maximum Value
    • MAXi : Maximum Value
    • MAXbc : Maximum Value
    • MINI : Minimum Value
    • MINIi : Minimum Value
    • MINIbc : Minimum Value
    • MSUB : Multiply and Subtract
    • MSUBi : Multiply and Subtract; with I Register
    • MSUBq : Multiply and Subtract; by Q Register
    • MSUBbc : Broadcast Multiply and Subtract
    • MSUBA : Multiply and Subtract; to Accumulator
    • MSUBAi : Multiply and Subtract; with I Register, to Accumulator
    • MSUBAq : Multiply and Subtract; by Q Register, to Accumulator
    • MSUBAbc : Broadcast Multiply and Subtract; to Accumulator
    • MUL : Multiply
    • MULi : Multiply by I Register
    • MULq : Multiply by Q Register
    • MULbc : Multiply by Broadcast
    • MULA : Multiply; to Accumulator
    • MULAi : Multiply by I Register, to Accumulator
    • MULAq : Multiply by Q Register, to Accumulator
    • MULAbc : Broadcast Multiply by broadcast, to Accumulator
    • NOP : No Operation
    • OPMULA : Vector Outer Product
    • OPMSUB : Vector Outer Product
    • SUB : Subtract
    • SUBi : Subtract I Register
    • SUBq : Subtract Q Register
    • SUBbc : Broadcast Subtract
    • SUBA : Substract; to Accumulator
    • SUBAi : Subtract I Register; to Accumulator
    • SUBAq : Subtract Q Register; to Accumulator
    • SUBAbc : Broadcast Subtract; to Accumulator
  • Lower Instruction Reference
    • B : Unconditional Branch
    • BAL : Unconditional Branch with Saving Address
    • DIV : Divide
    • EATAN : Arctangent
    • EATANxy : Arctangent
    • EATANxz : Arctangent
    • EEXP : Exponent
    • ELENG : Length
    • ERCPR : Reciprocal Number
    • ERLENG : Reciprocal Number of Length
    • ERSADD : Reciprocal Number
    • ERSQRT : Reciprocal Number of Square Root
    • ESADD : Sum of Square Numbers
    • ESIN : Sine
    • ESQRT : Square Root
    • ESUM : Sum of Each Field
    • FCAND : Test Clipping Flag
    • FCEQ : Test Clipping Flag
    • FCGET : Get Clipping Flag
    • FCOR : Test Clipping Flag
    • FCSET : Setting Clipping Flag
    • FMAND : Test MAC Flag Check
    • FMEQ : Test MAC Flag Check
    • FMOR : Test MAC Flag Check
    • FSAND : Test Status Flag Check
    • FSEQ : Test Status Flag Check
    • FSOR : Test Status Flag
    • FSSET : Set Sticky Flags
    • IADD : ADD Integer
    • IADDI : Add Immediate Value Integer
    • IADDIU : Add Immediate Integer
    • IAND : Logical Product
    • IBEQ : Conditional Branch
    • IBGEZ : Conditional Branch
    • IBGTZ : Conditional Branch
    • IBLEZ : Conditional Branch
    • IBLTZ : Conditional Branch
    • IBNE : Conditional Branch
    • ILW : Integer Load with Offset Specification
    • ILWR : Integer Load
    • IOR : Logical Sum
    • ISUB : Integer Subtract
    • ISUBIU : Immediate Value Integer Subtract
    • ISW : Integer Store with Offset
    • ISWR : Integer Store
    • JALR : Unconditional Jump with Address Saving
    • JR : Unconditional Jump
    • LQ : Load Qword
    • LQD : Load Qword with Pre-Decrement
    • LQI : Load with Post-Increment
    • MFIR : Move from Integer Register to Floating-Point Register
    • MFP : Move from P Register to Floating-Point Register
    • MOVE : Transfer between Floating-Point Registers
    • MR32 : Move with Rotate
    • MTIR : Move from Floating-Point Register to Integer Register
    • RGET : Get Random Number
    • RINIT : Random Number Intialize
    • RNEXT : Next Random Number
    • RSQRT : Square Root Division
    • RXOR : Random Number Set
    • SQ : Store Qword with Offset
    • SQD : Store Qword with Pre-Decrement
    • SQI : Store with Post-Increment
    • SQRT : Square Root
    • WAITP : P Register Syncronize
    • WAITQ : Q Register Syncronize
    • XGKICK : GIF Control
    • XITOP : VIF Control
    • XTOP : VIF Control
• Macro Mode
  • Macro Mode Register Set
    • Floating-Point Registers
    • Integer Registers
    • Control Registers
    • Special Registers
  • Macro Instruction Set Overview
    • MIPS COP2 Instructions
    • Coprocessor Transfer Instructions
    • Coprocessor Branch Instructions
    • Coprocessor Calculation Instructions
    • Micro Subroutine Execution Instructions
  • Flags
  • Macro Mode Pipeline
    • Pipeline Structure of Macroinstructions
    • Hazards in Macro Mode
    • Macroinstruction Operation
    • Operation when Transferring Data with EE Core
    • Operation when Executing a Micro Subroutine
    • Micro Subroutine and Data Transfer Operations
    • Q Register Synchronization
    • Notes on Other Pipeline Operations
  • VU1 Control
    • MIPS COP2 Condition Signal
    • MIPS COP2 Control Register
    • Floating-Point Registers
    • Integer Registers
    • Control Registers
• Macro Mode Instruction Reference
  • Macro Instruction Operation Code
    • Macro Instruction Operation Type
    • Macro Instruction Operation Field
  • Macro Instruction Set
    • BC2F : Branch on COP2 Conditional Signal
    • BC2FL : Branch on COP2 Conditional Signal
    • BC2T : Branch on COP2 Conditional Signal
    • BC2TL : Branch on COP2 Conditional signal
    • CFC2 : Transfer Integer Data from VU to EE Core
    • CTC2 : Transfer Integer Data from EE Core to VU
    • LQC2 : Floating-Point Data Transfer from EE Core to VU
    • QMFC2 : Floating-Point Data Transfer from VU to EE Core
    • QMTC2 : Floating-Point Data Transfer from EE Core to VU
    • SQC2 : Floating-Point Data Transfer from VU to EE Core
    • VABS : Absolute Value
    • VADD : Add
    • VADDi : Add to I Register
    • VADDq : Add to Q Register
    • VADDbc : Broadcast Add
    • VADDA : Add to Accumulator
    • VADDAi : Add I Register to Accumulator
    • VADDAq : Add Q Register to Accumulator
    • VADDAbc : Broadcast Add to Accumulator
    • VCALLMS : Start Micro Sub-Routine
    • VCALLMSR : Start Micro Sub-Routine by Register
    • VCLIP : Clipping Judgment
    • VDIV : Divide
    • VFTOI0 : Conversion to Fixed Point
    • VFTOI4 : Conversion to Fixed Point
    • VFTOI12 : Conversion to Fixed Point
    • VFTOI15 : Conversion to Fixed Point
    • VIADD : Add Integer
    • VIADDI : Add Immediate Value Integer
    • VIAND : Logical Product
    • VILWR : Integer Load
    • VIOR : Logical Sum
    • VISUB : Integer Subtract
    • VISWR : Integer Store
    • VITOF0 : Conversion to Floating-Point Number
    • VITOF4 : Conversion to Floating-Point Number
    • VITOF12 : Conversion to Floating-Point Number
    • VITOF15 : Conversion to Floating-Point Number
    • VLQD : Load with Pre-Decrement
    • VLQI : Load with Post-Increment
    • VMADD : Product Sum
    • VMADDi : Product Sum; with I Register
    • VMADDq : Product Sum; with Q Register
    • VMADDbc : Broadcast Product Sum
    • VMADDA : Product Sum; to Accumulator
    • VMADDAi : Product Sum; with I Register, to Accumulator
    • VMADDAq : Product Sum; with Q Register, to Accumulator
    • VMADDAbc : Broadcast Product Sum; to Accumulator
    • VMAX : Maximum Value
    • VMAXi : Maximum Value
    • VMAXbc : Maximum Value
    • VMFIR : Transfer from Integer Register to Floating-Point Register
    • VMINI : Minimum Value
    • VMINIi : Minimum Value
    • VMINIbc : Minimum Value
    • VMOVE : Transfer between Floating-Point Registers
    • VMR32 : Vector Rotate
    • VMSUB : Multiply and Subtract
    • VMSUBi : Multiply and Subtract with I Register
    • VMSUBq : Multiply and Subtract; Q Register
    • VMSUBbc : Broadcast Multiply and Subtract
    • VMSUBA : Multiply and Subtract; to Accumulator
    • VMSUBAi : Multiply and Subtract; with I Register, to Accumulator
    • VMSUBAq : Multiply and Subtract; with Q Register, to Accumulator
    • VMSUBAbc : Broadcast Multiply and Subtract; to Accumulator
    • VMTIR : Transfer from Floating-Point Register to Integer Register
    • VMUL : Multiply
    • VMULi : Multiply; by I Register
    • VMULq : Multiply; by Q Register
    • VMULbc : Broadcast Multiply
    • VMULA : Multiply; to Accumulator
    • VMULAi : Multiply by I Register; to Accumulator
    • VMULAq : Multiply by Q Register; to Accumulator
    • VMULAbc : Broadcast Multiply; to Accumulator
    • VNOP : No Operation
    • VOPMULA : Vector Outer Product
    • VOPMSUB : Vector Outer Product
    • VRGET : Get Random Numbers
    • VRINIT : Random Number Initial Set
    • VRNEXT : New Random Numbers
    • VRSQRT : Square Root Division
    • VRXOR : Random Number Set
    • VSQD : Store with Pre-Decrement
    • VSQI : Store with Post-Increment
    • VSQRT : Square Root
    • VSUB : Subtract
    • VSUBi : Subtract I Register
    • VSUBq : Subtract Q Register
    • VSUBbc : Broadcast Subtract
    • VSUBA : Subtract; to Accumulator
    • VSUBAi : Subtract I Register; to Accumulator
    • VSUBAq : Subtract Q Register; to Accumulator
    • VSUBAbc : Broadcast Subtract; to Accumulator
    • VWAITQ : Q Register Synchronize
• Appendix
  • Sample Micro Programs
  • EFU Processing
  • Micro Subroutine Debugging
    • Debug Flow
    • Notes on Re-execution
  • Throughput / Latency List