maria

package
v0.7.5 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Mar 27, 2026 License: GPL-3.0 Imports: 8 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var ContextError = errors.New("maria")

the wrapping error for any errors passed to Context.Break()

Functions

This section is empty.

Types

type CPU 

type CPU interface {
	InInterrupt() bool
}

type Context 

type Context interface {
	Break(error)
	Spec() spec.Spec
	UseOverlay() bool
	Overscan() string
	// contains filtered or unexported methods
}

Context allows Maria to signal a break

type Maria 

type Maria struct {

	// the current coordinates of the TV image
	Coords coords

	// the current television specificaion (NTSC, PAL, etc.)
	Spec spec.Spec

	// current DLL
	DLL dll
	DL  dl

	// the most recent DLLs. reset on start of DMA of a new frame. used for
	// debugging feedback
	RecentDLL []dll
	RecentDL  []dl
	// contains filtered or unexported fields
}

func Create 

func Create(ctx Context, g *gui.ChannelsDebugger, mem Memory, cpu CPU, limit limiter) *Maria

func (*Maria) Access 

func (mar *Maria) Access(write bool, idx uint16, data uint8) (uint8, error)

func (*Maria) GetCoords added in v0.7.5 

func (mar *Maria) GetCoords() string

func (*Maria) GetOverscan added in v0.7.3 

func (mar *Maria) GetOverscan() (int, int)

func (*Maria) Label 

func (mar *Maria) Label() string

func (*Maria) PushRender 

func (mar *Maria) PushRender()

func (*Maria) Read 

func (mar *Maria) Read(idx uint16) (uint8, error)

func (*Maria) Reset 

func (mar *Maria) Reset(random bool)

func (*Maria) SetOverscan added in v0.7.3 

func (mar *Maria) SetOverscan(top int, bottom int)

func (*Maria) Status 

func (mar *Maria) Status() string

func (*Maria) String added in v0.4.3 

func (mar *Maria) String() string

func (*Maria) Tick 

func (mar *Maria) Tick(dmaLatch bool) (dma bool, rdy bool, nmi bool)

dmaLatch indicates that the DMA can begin if the preDMA has been reached.

From the '7800 Software Guide' "The DMA start-up may be delayed if the 6502 clock isn't at the end of a cycle when DMA begins."

func (*Maria) Write 

func (mar *Maria) Write(idx uint16, data uint8) error

type Memory 

type Memory interface {
	Read(address uint16) (uint8, error)
	Write(address uint16, data uint8) error
	// contains filtered or unexported methods
}

Source Files

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