mirror of https://github.com/badvision/jace.git
260 lines
9.1 KiB
Java
260 lines
9.1 KiB
Java
/*
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* Copyright (C) 2012 Brendan Robert (BLuRry) brendan.robert@gmail.com.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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package jace.hardware.massStorage;
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import jace.Emulator;
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import jace.apple2e.MOS65C02;
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import jace.config.Name;
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import jace.core.Card;
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import jace.core.Computer;
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import jace.core.Motherboard;
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import jace.core.RAMEvent;
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import jace.core.RAMEvent.TYPE;
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import jace.core.Utility;
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import jace.hardware.ProdosDriver;
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import jace.hardware.SmartportDriver;
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import jace.library.MediaConsumer;
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import jace.library.MediaConsumerParent;
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import java.io.IOException;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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/**
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* Hard disk and 800k floppy (smartport) controller card. HDV and 2MG images are
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* both supported.
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*
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* @author Brendan Robert (BLuRry) brendan.robert@gmail.com
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*/
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@Name("Mass Storage Device")
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public class CardMassStorage extends Card implements MediaConsumerParent {
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MassStorageDrive drive1;
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MassStorageDrive drive2;
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public CardMassStorage() {
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drive1 = new MassStorageDrive();
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drive2 = new MassStorageDrive();
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drive1.setIcon(Utility.loadIcon("drive-harddisk.png"));
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drive2.setIcon(Utility.loadIcon("drive-harddisk.png"));
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currentDrive = drive1;
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}
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@Override
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public void setSlot(int slot) {
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super.setSlot(slot);
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drive1.getIcon().setDescription("S" + getSlot() + "D1");
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drive2.getIcon().setDescription("S" + getSlot() + "D2");
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}
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@Override
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public String getDeviceName() {
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return "Mass Storage Device";
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}
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// boot0 stores cards*16 of boot device here
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static int SLT16 = 0x02B;
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// "rom" offset where device driver is called by MLI
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// static int DEVICE_DRIVER_OFFSET = 0x042;
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static int DEVICE_DRIVER_OFFSET = 0x0A;
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byte[] cardSignature = new byte[]{
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(byte) 0x0a9 /*NOP*/, 0x020, (byte) 0x0a9, 0x00,
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(byte) 0x0a9, 0x03 /*currentDisk cards*/, (byte) 0x0a9, 0x03c /*currentDisk cards*/,
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(byte) 0xd0, 0x07, 0x60, (byte) 0x0b0,
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0x01 /*firmware cards*/, 0x18, (byte) 0x0b0, 0x5a
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};
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Card theCard = this;
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public MassStorageDrive currentDrive;
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public IDisk getCurrentDisk() {
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if (currentDrive != null) {
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return currentDrive.getCurrentDisk();
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}
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return null;
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}
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ProdosDriver driver = new ProdosDriver() {
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@Override
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public boolean changeUnit(int unit) {
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currentDrive = unit == 0 ? drive1 : drive2;
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return getCurrentDisk() != null;
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}
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@Override
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public int getSize() {
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return getCurrentDisk() != null ? getCurrentDisk().getSize() : 0;
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}
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@Override
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public boolean isWriteProtected() {
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return getCurrentDisk() != null ? getCurrentDisk().isWriteProtected() : true;
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}
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@Override
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public void mliFormat() throws IOException {
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getCurrentDisk().mliFormat();
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}
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@Override
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public void mliRead(int block, int bufferAddress) throws IOException {
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getCurrentDisk().mliRead(block, bufferAddress);
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}
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@Override
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public void mliWrite(int block, int bufferAddress) throws IOException {
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getCurrentDisk().mliWrite(block, bufferAddress);
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}
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@Override
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public Card getOwner() {
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return theCard;
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}
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};
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@Override
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public void reconfigure() {
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try {
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detach();
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int pc = Computer.getComputer().getCpu().getProgramCounter();
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if (drive1.getCurrentDisk() != null && getSlot() == 7 && (pc == 0x0c65e || pc == 0x0c661)) {
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// If the computer is in a loop trying to boot from cards 6, fast-boot from here instead
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// This is a convenience to boot a hard-drive if the emulator has started waiting for a currentDisk
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currentDrive = drive1;
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getCurrentDisk().boot0(getSlot());
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Card[] cards = Computer.getComputer().getMemory().getAllCards();
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Motherboard.cancelSpeedRequest(cards[6]);
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}
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attach();
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} catch (IOException ex) {
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Logger.getLogger(CardMassStorage.class.getName()).log(Level.SEVERE, null, ex);
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}
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}
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@Override
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public void reset() {
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}
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@Override
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protected void handleC8FirmwareAccess(int register, TYPE type, int value, RAMEvent e) {
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// There is no c8 rom for this card
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}
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@Override
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protected void handleFirmwareAccess(int offset, TYPE type, int value, RAMEvent e) {
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MOS65C02 cpu = (MOS65C02) Computer.getComputer().getCpu();
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// System.out.println(e.getType()+" "+Integer.toHexString(e.getAddress())+" from instruction at "+Integer.toHexString(cpu.getProgramCounter()));
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if (type.isRead()) {
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Emulator.getFrame().addIndicator(this, currentDrive.getIcon());
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if (drive1.getCurrentDisk() == null && drive2.getCurrentDisk() == null) {
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e.setNewValue(0);
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return;
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}
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if (type == TYPE.EXECUTE) {
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// Virtual functions, handle accordingly
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String error;
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if (offset == 0x00) {
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// NOP unless otherwise specified
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e.setNewValue(0x0ea);
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try {
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if (drive1.getCurrentDisk() != null) {
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currentDrive = drive1;
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getCurrentDisk().boot0(getSlot());
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} else {
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// Patch for crash on start when no image is mounted
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e.setNewValue(0x060);
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}
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return;
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} catch (IOException ex) {
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Logger.getLogger(CardMassStorage.class.getName()).log(Level.SEVERE, null, ex);
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error = ex.getMessage();
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// Jump to the basic interpreter for now
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cpu.setProgramCounter(0x0dfff);
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int address = 0x0480;
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for (char c : error.toCharArray()) {
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Computer.getComputer().getMemory().write(address++, (byte) (c + 0x080), false, false);
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}
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}
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} else {
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if (offset == DEVICE_DRIVER_OFFSET) {
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driver.handleMLI();
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} else if (offset == DEVICE_DRIVER_OFFSET + 3) {
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smartport.handleSmartport();
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} else {
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System.out.println("Call to unknown handler " + Integer.toString(e.getAddress(), 16) + "-- returning");
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}
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/* act like RTS was called */
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e.setNewValue(0x060);
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}
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}
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if (offset < 16) {
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e.setNewValue(cardSignature[offset]);
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} else {
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switch (offset) {
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// Disk capacity = 65536 blocks
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case 0x0FC:
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e.setNewValue(0x0ff);
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break;
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case 0x0FD:
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e.setNewValue(0x07f);
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break;
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// Status bits
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case 0x0FE:
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e.setNewValue(0x0D7);
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break;
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case 0x0FF:
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e.setNewValue(DEVICE_DRIVER_OFFSET);
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}
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}
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}
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}
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@Override
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protected void handleIOAccess(int register, TYPE type, int value, RAMEvent e) {
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// Ignore IO registers
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}
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@Override
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public void tick() {
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// Nothing is done per CPU cycle
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}
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SmartportDriver smartport = new SmartportDriver() {
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@Override
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public boolean changeUnit(int unitNumber) {
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currentDrive = unitNumber == 1 ? drive1 : drive2;
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return getCurrentDisk() != null;
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}
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@Override
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public void read(int blockNum, int buffer) throws IOException {
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getCurrentDisk().mliRead(blockNum, buffer);
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}
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@Override
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public void write(int blockNum, int buffer) throws IOException {
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getCurrentDisk().mliWrite(blockNum, buffer);
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}
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@Override
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public ERROR_CODE returnStatus(int dataBuffer, int[] params) {
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return ERROR_CODE.NO_ERROR;
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}
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};
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public MediaConsumer[] getConsumers() {
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return new MediaConsumer[]{drive1, drive2};
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}
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} |