: Class NintendoEntertainmentSystem

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SUMMARY: INNER | FIELD | CONSTR | METHOD

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Class NintendoEntertainmentSystem

java.lang.Object
  |
  +--NMOS6502
        |
        +--N2A03
              |
              +--NintendoEntertainmentSystem

public final class NintendoEntertainmentSystem
extends N2A03

The NintendoEntertainmentSystem class emulates the Nintendo Entertainment System produced by Nintendo.
This class needs a lot of modifications and fixes (lots of bugs).
This code is GPL. Copyright (c) 2000 Brice Fines.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Version:: 0.2005 06/06/00
Author:: Jarod CANAL
See Also:: "The Gnu Public License."

Field Summary

protected int joy_1
          Joypad 1 variable.

protected int joy_2
          Joypad 2 variable.

protected int joy_readbit1
          Joypad 1 bit variable.

protected int joy_readbit2
          Joypad 2 bit variable.

protected char[] Memory
          NES memory.

protected Video PPU
          NES picture processing unit.

private boolean reset_joy
          Joypad variable.

protected char[] RomImage
          Cart ROM image.

protected char[] VRomImage
          Cart VROM image.

Fields inherited from class N2A03

N2A03_DEFAULTCLOCK

Fields inherited from class NMOS6502

accumulator, after_cli, CLEAR_LINE, effectiveAddress, F_B, F_C, F_D, F_I, F_N, F_T, F_V, F_Z, iCount, irq_callback, irq_state, M6502_INT_IRQ, M6502_INT_NMI, M6502_INT_NONE, M6502_IRQ_VEC, M6502_NMI_VEC, M6502_RST_VEC, M6502_SET_OVERFLOW, nmi_state, pending_irq, previousProgramCounter, processorStatus, programCounter, so_state, stackPointer, tmp, xIndexRegister, yIndexRegister, zeroPageAddress

Constructor Summary

NintendoEntertainmentSystem()
          Constructor.

NintendoEntertainmentSystem(int RomPages, int VRomPages, boolean HasHorizontalMirroring)
          Constructor.

Method Summary

protected void nes_timeslice()


protected boolean PPUPeriodic()


int RDMEM(int Address)
          Read from memory.

void WRMEM(int Address, int Value)
          Write to memory.

Methods inherited from class N2A03

ADC, n2a03_irq, SBC

Methods inherited from class NMOS6502

AND, ASL, BCC, BCS, BEQ, BIT, BMI, BNE, BPL, BRA, BRK, BVC, BVS, changePC16, CLC, CLD, CLI, CLV, CMP, CPX, CPY, debugRegisters, DEC, DEX, DEY, EA_ABS, EA_ABX, EA_ABY, EA_IDX, EA_IDY, EA_IND, EA_ZPG, EA_ZPX, EA_ZPY, EOR, execute, ILL, INC, INX, INY, JMP, JSR, LDA, LDX, LDY, LSR, m6502_set_irq_callback, NOP, opcode0x02, opcode0x03, opcode0x04, opcode0x07, opcode0x0B, opcode0x0C, opcode0x0F, opcode0x12, opcode0x13, opcode0x14, opcode0x17, opcode0x1A, opcode0x1B, opcode0x1C, opcode0x1F, opcode0x22, opcode0x23, opcode0x27, opcode0x2B, opcode0x2F, opcode0x32, opcode0x33, opcode0x34, opcode0x37, opcode0x3A, opcode0x3B, opcode0x3C, opcode0x3F, opcode0x42, opcode0x43, opcode0x44, opcode0x47, opcode0x4B, opcode0x4F, opcode0x52, opcode0x53, opcode0x54, opcode0x57, opcode0x5A, opcode0x5B, opcode0x5C, opcode0x5F, opcode0x62, opcode0x63, opcode0x64, opcode0x67, opcode0x6B, opcode0x6F, opcode0x72, opcode0x73, opcode0x74, opcode0x77, opcode0x7A, opcode0x7B, opcode0x7C, opcode0x7F, opcode0x80, opcode0x82, opcode0x83, opcode0x87, opcode0x89, opcode0x8B, opcode0x8F, opcode0x92, opcode0x93, opcode0x97, opcode0x9B, opcode0x9C, opcode0x9E, opcode0x9F, opcode0xA3, opcode0xA7, opcode0xAB, opcode0xAF, opcode0xB2, opcode0xB3, opcode0xB7, opcode0xBB, opcode0xBF, opcode0xC2, opcode0xC3, opcode0xC7, opcode0xCB, opcode0xCF, opcode0xD2, opcode0xD3, opcode0xD4, opcode0xD7, opcode0xDA, opcode0xDB, opcode0xDC, opcode0xDF, opcode0xE2, opcode0xE3, opcode0xE7, opcode0xEB, opcode0xEF, opcode0xF2, opcode0xF3, opcode0xF4, opcode0xF7, opcode0xFA, opcode0xFB, opcode0xFC, opcode0xFF, ORA, PHA, PHP, PLA, PLP, PULL, PUSH, RD_ABS, RD_ABX, RD_ABY, RD_ACC, RD_IDX, RD_IDY, RD_IMM, RD_ZPG, RD_ZPX, RD_ZPY, readOpcode, readOpcodeArgument, reset, ROL, ROR, RTI, RTS, SEC, SED, SEI, set_irq_line, set_nmi_line, setNZ, STA, STX, STY, switchOpcode, take_irq, TAX, TAY, TSX, TXA, TXS, TYA, WB_ACC, WB_EA, WR_ABS, WR_ABX, WR_ABY, WR_IDX, WR_IDY, WR_ZPG, WR_ZPX, WR_ZPY

Methods inherited from class java.lang.Object

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

Field Detail

RomImage

protected char[] RomImage

Cart ROM image.

VRomImage

protected char[] VRomImage

Cart VROM image.

Memory

protected char[] Memory

NES memory.
0x10000 bytes of RAM.

PPU

protected Video PPU

NES picture processing unit.

joy_1

protected int joy_1

Joypad 1 variable.

joy_2

protected int joy_2

Joypad 2 variable.

joy_readbit1

protected int joy_readbit1

Joypad 1 bit variable.

joy_readbit2

protected int joy_readbit2

Joypad 2 bit variable.

reset_joy

private boolean reset_joy

Joypad variable.
If $01 is written to $4016 then this value is set to true.

Constructor Detail

NintendoEntertainmentSystem

public NintendoEntertainmentSystem()

Constructor.

NintendoEntertainmentSystem

public NintendoEntertainmentSystem(int RomPages,
                                   int VRomPages,
                                   boolean HasHorizontalMirroring)

Constructor.

Parameters:: RomPages - number of ROM pages.; VRomPages - number of VROM pages.; HasHorizontalMirroring - indicates if cart has horizontal or vertical mirroring.

Method Detail

WRMEM

public void WRMEM(int Address,
                  int Value)

Description copied from class: NMOS6502

Write to memory.
You have to provide this function.

Overrides:: WRMEM in class NMOS6502

Following copied from class: NMOS6502

Parameters:: address - the memory address where you want to write.; data - the value you want to write.

RDMEM

public int RDMEM(int Address)