gamePak

package

v0.0.0-...-45a14b4 Latest Latest Go to latest Published: Sep 2, 2022 License: MIT Imports: 3 Imported by: 0

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Repository

github.com/raulferras/nes-golang

Links

Open Source Insights

Documentation ¶

Index ¶

Constants
func NewEmptyCHRROM() []byte
type GamePak
type GamePakInterface
type Header
type INesHeader
- func CreateINes1Header(prgRomSize byte, chrRomSize byte, flag6 byte, flag7 byte, flag8 byte, ...) INesHeader
type Mapper
- func CreateMapper(header Header, prgROM []byte, chrROM []byte) Mapper
type Mapper000
- func CreateMapper000(header Header, prgROM []byte, chrROM []byte) *Mapper000

Constants ¶

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const FourScreenMirroring = byte(0b11)

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const GAMEPAK_HIGH_RANGE = 0xFFFF

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const GAMEPAK_LOW_RANGE = 0x4020

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const GAMEPAK_MEMORY_SIZE = 0xBFE0

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const GAMEPAK_ROM_LOWER_BANK_START = 0x8000

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const HorizontalMirroring = byte(0b00)

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const OneScreenMirroring = byte(0b10)

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const VerticalMirroring = byte(0b01)

Variables ¶

This section is empty.

Functions ¶

func NewEmptyCHRROM ¶

func NewEmptyCHRROM() []byte

Types ¶

type GamePak ¶

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

func CreateGamePak ¶

func CreateGamePak(header Header, prgROM []byte, chrROM []byte) GamePak

func CreateGamePakFromROMFile ¶

func CreateGamePakFromROMFile(romFilePath string) GamePak

func NewDummyGamePak ¶

func NewDummyGamePak(chrROM []byte) *GamePak

func NewGamePakWithINes ¶

func NewGamePakWithINes(flag6 byte, flag7 byte, flag8 byte, flag9 byte, flag10 byte, prgROM []byte, chrROM []byte) GamePak

func (gamePak *GamePak) Header() Header

func (*GamePak) ReadCHRROM ¶

func (gamePak *GamePak) ReadCHRROM(address types.Address) byte

func (*GamePak) ReadPrgROM ¶

func (gamePak *GamePak) ReadPrgROM(address types.Address) byte

func (*GamePak) WriteCHRRAM ¶

func (gamePak *GamePak) WriteCHRRAM(address types.Address, value byte)

func (*GamePak) WritePrgROM ¶

func (gamePak *GamePak) WritePrgROM(address types.Address, value byte)

type GamePakInterface ¶

type GamePakInterface interface {
	Header() Header
	ReadPrgROM(address types.Address) byte
	WritePrgROM(address types.Address, value byte)
	ReadCHRROM(address types.Address) byte
	WriteCHRAM(address types.Address, value byte)
}

type Header ¶

type Header interface {
	ProgramSize() byte
	CHRSize() byte
	Mirroring() byte
	HasPersistentMemory() bool
	HasTrainer() bool
	IgnoreMirroringControl() bool

	MapperNumber() byte
	PRGRAM() byte
	TvSystem() byte
}

type INesHeader ¶

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

func CreateINes1Header ¶

func CreateINes1Header(prgRomSize byte, chrRomSize byte, flag6 byte, flag7 byte, flag8 byte, flag9 byte, flag10 byte) INesHeader

func (INesHeader) CHRSize ¶

func (ines INesHeader) CHRSize() byte

func (INesHeader) HasPersistentMemory ¶

func (ines INesHeader) HasPersistentMemory() bool

func (INesHeader) HasTrainer ¶

func (ines INesHeader) HasTrainer() bool

func (INesHeader) IgnoreMirroringControl ¶

func (ines INesHeader) IgnoreMirroringControl() bool

func (INesHeader) MapperNumber ¶

func (ines INesHeader) MapperNumber() byte

func (INesHeader) Mirroring ¶

func (ines INesHeader) Mirroring() byte

func (INesHeader) PRGRAM ¶

func (ines INesHeader) PRGRAM() byte

func (INesHeader) ProgramSize ¶

func (ines INesHeader) ProgramSize() byte

Flags6 76543210 |||||||| |||||||+- Mirroring: 0: horizontal (vertical arrangement) (CIRAM A10 = PPU A11) ||||||| 1: vertical (horizontal arrangement) (CIRAM A10 = PPU A10) ||||||+-- 1: GamePak contains battery-backed PRG RAM ($6000-7FFF) or other persistent memory |||||+--- 1: 512-byte trainer at $7000-$71FF (stored before PRG prgROM) ||||+---- 1: Ignore mirroring control or above mirroring bit; instead provide four-screen VRAM ++++----- Lower nybble of mapper number

func (INesHeader) TvSystem ¶

func (ines INesHeader) TvSystem() byte

type Mapper ¶

type Mapper interface {
	PrgBanks() byte
	ChrBanks() byte

	ReadPrgROM(address types.Address) byte
	WritePrgROM(address types.Address, value byte)
	ReadChrROM(address types.Address) byte
	WriteChrROM(address types.Address, value byte)
}

func CreateMapper ¶

func CreateMapper(header Header, prgROM []byte, chrROM []byte) Mapper

type Mapper000 ¶

type Mapper000 struct {
	// contains filtered or unexported fields
}

func CreateMapper000 ¶

func CreateMapper000(header Header, prgROM []byte, chrROM []byte) *Mapper000

func (*Mapper000) ChrBanks ¶

func (mapper *Mapper000) ChrBanks() byte

func (*Mapper000) PrgBanks ¶

func (mapper *Mapper000) PrgBanks() byte

func (*Mapper000) ReadChrROM ¶

func (mapper *Mapper000) ReadChrROM(address types.Address) byte

func (*Mapper000) ReadPrgROM ¶

func (mapper *Mapper000) ReadPrgROM(address types.Address) byte

func (*Mapper000) WriteChrROM ¶

func (mapper *Mapper000) WriteChrROM(address types.Address, value byte)

func (*Mapper000) WritePrgROM ¶

func (mapper *Mapper000) WritePrgROM(address types.Address, value byte)

Source Files ¶

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Documentation ¶

Index ¶

Constants ¶

Variables ¶

Functions ¶

func NewEmptyCHRROM ¶

Types ¶

type GamePak ¶

func CreateGamePak ¶

func CreateGamePakFromROMFile ¶

func NewDummyGamePak ¶

func NewGamePakWithINes ¶

func (*GamePak) Header ¶

func (*GamePak) ReadCHRROM ¶

func (*GamePak) ReadPrgROM ¶

func (*GamePak) WriteCHRRAM ¶

func (*GamePak) WritePrgROM ¶

type GamePakInterface ¶

type Header ¶

type INesHeader ¶

func CreateINes1Header ¶

func (INesHeader) CHRSize ¶

func (INesHeader) HasPersistentMemory ¶

func (INesHeader) HasTrainer ¶

func (INesHeader) IgnoreMirroringControl ¶

func (INesHeader) MapperNumber ¶

func (INesHeader) Mirroring ¶

func (INesHeader) PRGRAM ¶

func (INesHeader) ProgramSize ¶

func (INesHeader) TvSystem ¶

type Mapper ¶

func CreateMapper ¶

type Mapper000 ¶

func CreateMapper000 ¶

func (*Mapper000) ChrBanks ¶

func (*Mapper000) PrgBanks ¶

func (*Mapper000) ReadChrROM ¶

func (*Mapper000) ReadPrgROM ¶

func (*Mapper000) WriteChrROM ¶

func (*Mapper000) WritePrgROM ¶

Source Files ¶