de.michab.simulator.mos6502
Class Vic

java.lang.Object
  de.michab.simulator.DefaultChip
      de.michab.simulator.mos6502.Vic

All Implemented Interfaces:

Addressable, Chip

public class Vic

extends DefaultChip

Represents the C64's MOS6569 video interface chip.

Version:

$Revision: 1.28 $

Author:

Michael G. Binz

Field Summary

static int	BACKGRDCOL0
static int	BACKGRDCOL1
static int	BACKGRDCOL2
static int	BACKGRDCOL3
static int	CTRL1 Control register 1
static int	CTRL2
static int	EXTERIORCOL
static int	INTERRUPTMASK
static int	INTERRUPTREQUEST
static int	MSBX Most significant bit for X coordinate of all sprites.
static int	RASTERIRQ Number of the rasterline that triggers irq.
static int	S0Y Y coordinate sprite 0.
static int	S1X
static int	S1Y
static int	S2X
static int	S2Y
static int	S3X
static int	S3Y
static int	S4X
static int	S4Y
static int	S5X
static int	S5Y
static int	S6X
static int	S6Y
static int	S7X
static int	S7Y
static int	SPRITEBACKCOLL
static int	SPRITEBACKGRD
static int	SPRITECOL0
static int	SPRITECOL1
static int	SPRITECOL2
static int	SPRITECOL3
static int	SPRITECOL4
static int	SPRITECOL5
static int	SPRITECOL6
static int	SPRITECOL7
static int	SPRITEENABLE Sprite enabled.
static int	SPRITEEXPANDX
static int	SPRITEEXPANDY
static int	SPRITEMULTIC0
static int	SPRITEMULTIC1
static int	SPRITEMULTICOL
static int	SPRITESPRITECOLL
static int	STROBEX Light pen X.
static int	STROBEY Light pen Y.
static int[]	VIC_RGB_COLORS This defines a table of the 64s colors.
static int	VIDEOMEMBASE

Constructor Summary

Vic(Cpu6510 cpu, Memory memory, int colorRamAddress, Clock clock)
Creates a VIC with the passed initial references.

Method Summary

java.awt.Component	getComponent() Returns a java.awt.Component that will show this VIC's output.
java.awt.Color	getExteriorColor() Get the current frame color.
Port[]	getPorts() Get an array of the chip's ports.
byte	read(int portId) Read a byte from the given address.
void	reset() Reset all registers to a zero value.
protected void	setAddresses(int charAdr, int bitmap, int videoram) Set the chip's character address.
void	setPageAddress(int page) Set the page address.
void	terminate() Shuts down the Vic.
void	write(int portId, byte value) Write a byte into the given address.

Methods inherited from class de.michab.simulator.DefaultChip

createPorts

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

VIC_RGB_COLORS

public static final int[] VIC_RGB_COLORS

This defines a table of the 64s colors. The table index maps to the c64 colour code.

S0Y

public static final int S0Y

Y coordinate sprite 0.

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S1X

public static final int S1X

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S1Y

public static final int S1Y

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S2X

public static final int S2X

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S2Y

public static final int S2Y

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S3X

public static final int S3X

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S3Y

public static final int S3Y

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S4X

public static final int S4X

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S4Y

public static final int S4Y

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S5X

public static final int S5X

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S5Y

public static final int S5Y

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S6X

public static final int S6X

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S6Y

public static final int S6Y

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S7X

public static final int S7X

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S7Y

public static final int S7Y

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MSBX

public static final int MSBX

Most significant bit for X coordinate of all sprites. Bit 0 represents sprite 0 and so on.

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CTRL1

public static final int CTRL1

Control register 1

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RASTERIRQ

public static final int RASTERIRQ

Number of the rasterline that triggers irq.

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STROBEX

public static final int STROBEX

Light pen X.

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STROBEY

public static final int STROBEY

Light pen Y.

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SPRITEENABLE

public static final int SPRITEENABLE

Sprite enabled.

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CTRL2

public static final int CTRL2

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SPRITEEXPANDY

public static final int SPRITEEXPANDY

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VIDEOMEMBASE

public static final int VIDEOMEMBASE

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INTERRUPTREQUEST

public static final int INTERRUPTREQUEST

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INTERRUPTMASK

public static final int INTERRUPTMASK

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SPRITEBACKGRD

public static final int SPRITEBACKGRD

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SPRITEMULTICOL

public static final int SPRITEMULTICOL

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SPRITEEXPANDX

public static final int SPRITEEXPANDX

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SPRITESPRITECOLL

public static final int SPRITESPRITECOLL

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SPRITEBACKCOLL

public static final int SPRITEBACKCOLL

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EXTERIORCOL

public static final int EXTERIORCOL

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BACKGRDCOL0

public static final int BACKGRDCOL0

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BACKGRDCOL1

public static final int BACKGRDCOL1

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BACKGRDCOL2

public static final int BACKGRDCOL2

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BACKGRDCOL3

public static final int BACKGRDCOL3

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SPRITEMULTIC0

public static final int SPRITEMULTIC0

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SPRITEMULTIC1

public static final int SPRITEMULTIC1

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SPRITECOL0

public static final int SPRITECOL0

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SPRITECOL1

public static final int SPRITECOL1

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SPRITECOL2

public static final int SPRITECOL2

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SPRITECOL3

public static final int SPRITECOL3

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SPRITECOL4

public static final int SPRITECOL4

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SPRITECOL5

public static final int SPRITECOL5

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SPRITECOL6

public static final int SPRITECOL6

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SPRITECOL7

public static final int SPRITECOL7

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Constructor Detail

Vic

public Vic(Cpu6510 cpu,
           Memory memory,
           int colorRamAddress,
           Clock clock)

Creates a VIC with the passed initial references.

Parameters:

cpu - A reference to the CPU for interrupt purposes.

memory - The memory for the VIC to operate on.

colorRamAddress - The address color ram should be mapped to.

Method Detail

terminate

public void terminate()

Shuts down the Vic. After this call the object should not longer be used.

read

public byte read(int portId)

Description copied from interface: Addressable

Read a byte from the given address.

Parameters:

portId - The source address.

Returns:

The byte read.

write

public void write(int portId,
                  byte value)

Description copied from interface: Addressable

Write a byte into the given address.

Parameters:

portId - The target address.

value - The value to be written.

getPorts

public Port[] getPorts()

Description copied from interface: Chip

Get an array of the chip's ports. May return null if this chip does not support ports.

Returns:

An array of the chip's ports.

setPageAddress

public void setPageAddress(int page)

Set the page address. Only the least 2 significant bits are used which means pages zero to three are available.

Parameters:

page - The page address.

setAddresses

protected void setAddresses(int charAdr,
                            int bitmap,
                            int videoram)

Set the chip's character address. Note that a full address is required, not only the character block. The VIC's page address isn't taken into account.

Parameters:

charAdr - The character memory address.

getComponent

public java.awt.Component getComponent()

Returns a java.awt.Component that will show this VIC's output. This has to be used to place the emulator's display in a user interface.

Returns:

The component that will show the VIC output.

reset

public void reset()

Reset all registers to a zero value.

getExteriorColor

public java.awt.Color getExteriorColor()

Get the current frame color.

Returns:

The current frame color.