cpu

package
v0.0.0-...-ea41a2c Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Oct 6, 2015 License: MIT Imports: 7 Imported by: 0

Documentation

Overview

Decimal Mode Not Implemented -- doesn't exist in NES

Index

Constants

View Source 
const (
	AddressImmediate int = iota
	AddressZeroPage
	AddressZeroPageX
	AddressZeroPageY
	AddressAbsolute
	AddressAbsoluteX
	AddressAbsoluteY
	AddressImplied
	AddressAccumulator
	AddressIndirect
	AddressIndirectWrong
	AddressIndirectX
	AddressIndirectY
	AddressRelative
	AddressAddress
)

Variables

View Source 
var ErrorUnknownAddressMode = errors.New("Unknown Addressing Mode")
View Source 
var ErrorUnknownInstruction = errors.New("Unknown Instruction")

Functions

This section is empty.

Types

type AddressGetter 

type AddressGetter func(c *CPU) (uint16, bool)

type CPU 

type CPU struct {
	Registers
	Flags

	Executers []Executer `json:"-"`
	Opcodes   []*Opcode  `json:"-"`

	Sync chan int `json:"-"`
	// contains filtered or unexported fields
}

func NewCPU 

func NewCPU(n *nes.NES, exit chan bool, log, nesLog *os.File) *CPU

func (*CPU) Execute 

func (c *CPU) Execute() int

func (*CPU) Pop 

func (c *CPU) Pop() byte

func (*CPU) PowerUp 

func (c *CPU) PowerUp()

func (*CPU) Push 

func (c *CPU) Push(val byte)

func (*CPU) Reset 

func (c *CPU) Reset()

func (*CPU) Run 

func (c *CPU) Run()

type Executer 

type Executer func(c *CPU) (cycles int, nexPc uint16)

func ADC 

func ADC(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func AND 

func AND(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func ASL 

func ASL(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func BCC 

func BCC(address, instructionLength, operand uint16, cycles int) Executer

func BCS 

func BCS(address, instructionLength, operand uint16, cycles int) Executer

func BEQ 

func BEQ(address, instructionLength, operand uint16, cycles int) Executer

func BIT 

func BIT(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func BMI 

func BMI(address, instructionLength, operand uint16, cycles int) Executer

func BNE 

func BNE(address, instructionLength, operand uint16, cycles int) Executer

func BPL 

func BPL(address, instructionLength, operand uint16, cycles int) Executer

func BRK 

func BRK(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func BVC 

func BVC(address, instructionLength, operand uint16, cycles int) Executer

func BVS 

func BVS(address, instructionLength, operand uint16, cycles int) Executer

func CLC 

func CLC(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func CLD 

func CLD(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func CLI 

func CLI(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func CLV 

func CLV(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func CMP 

func CMP(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func CPX 

func CPX(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func CPY 

func CPY(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func DCP 

func DCP(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func DEC 

func DEC(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func DEX 

func DEX(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func DEY 

func DEY(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func EOR 

func EOR(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func Execution 

func Execution(opcodes []*Opcode) []Executer

func INC 

func INC(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func INX 

func INX(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func INY 

func INY(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func ISB 

func ISB(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func JMP 

func JMP(get AddressGetter, address, instructionLength, operand uint16, cycles int) Executer

func JSR 

func JSR(get AddressGetter, address, instructionLength, operand uint16, cycles int) Executer

func LAX 

func LAX(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func LDA 

func LDA(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func LDX 

func LDX(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func LDY 

func LDY(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func LSR 

func LSR(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func NOP 

func NOP(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func NOPGET 

func NOPGET(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func ORA 

func ORA(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func PHA 

func PHA(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func PHP 

func PHP(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func PLA 

func PLA(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func PLP 

func PLP(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func RLA 

func RLA(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func ROL 

func ROL(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func ROR 

func ROR(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func RRA 

func RRA(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func RTI 

func RTI(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func RTS 

func RTS(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func SAX 

func SAX(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func SBC 

func SBC(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func SEC 

func SEC(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func SED 

func SED(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func SEI 

func SEI(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func SLO 

func SLO(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func SRE 

func SRE(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func STA 

func STA(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func STX 

func STX(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func STY 

func STY(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func TAX 

func TAX(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func TAY 

func TAY(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func TSX 

func TSX(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func TXA 

func TXA(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func TXS 

func TXS(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

func TYA 

func TYA(get Getter, set Setter, address, instructionLength, operand uint16, cycles int) Executer

type Flags 

type Flags struct {
	Carry     bool
	Zero      bool
	Interrupt bool
	Decimal   bool
	Break     bool
	Overflow  bool
	Negative  bool
}

func (*Flags) SetSign 

func (f *Flags) SetSign(value byte)

func (*Flags) SetStatus 

func (f *Flags) SetStatus(v byte)

func (*Flags) SetZero 

func (f *Flags) SetZero(value byte)

func (*Flags) Status 

func (f *Flags) Status() byte

type Getter 

type Getter func(c *CPU) (value byte, pageCrossed bool)

type Opcode 

type Opcode struct {
	// contains filtered or unexported fields
}

func Decompile 

func Decompile(memory []*byte) []*Opcode

Decompile will Read each address in memory as though it could be executed. This will produce many indvalid opcodes, but doesn't require us to differentiate between instructions and data ahead of time. Any invalid opcodes will result in a "nop". Hopefully the code never jumps to them :) Perhaps we should put a panicking instruction to suss these out.

func NewOpcode 

func NewOpcode(memory []*byte, address uint16) *Opcode

func (*Opcode) Address 

func (o *Opcode) Address() uint16

func (*Opcode) AddressGet 

func (o *Opcode) AddressGet(c *CPU) (uint16, bool)

func (*Opcode) AddressMode 

func (o *Opcode) AddressMode() int

func (*Opcode) Bytes 

func (o *Opcode) Bytes() string

func (*Opcode) Cycles 

func (o *Opcode) Cycles() int

func (*Opcode) Disassemble 

func (o *Opcode) Disassemble() string

func (*Opcode) Executer 

func (o *Opcode) Executer() Executer

func (*Opcode) Get 

func (o *Opcode) Get(c *CPU) byte

func (*Opcode) GetValueAt 

func (o *Opcode) GetValueAt(c *CPU) string

func (*Opcode) Instruction 

func (o *Opcode) Instruction() string

func (*Opcode) Opcode 

func (o *Opcode) Opcode() []*byte

func (*Opcode) Operand 

func (o *Opcode) Operand() uint16

func (*Opcode) Operands 

func (o *Opcode) Operands() string

type Registers 

type Registers struct {
	PC uint16
	A  byte
	X  byte
	Y  byte
	SP byte
}

type Setter 

type Setter func(c *CPU, value byte) bool

Source Files

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