MultiSoundTMS9919B.java

/*
  MultiSoundTMS9919B.java

  (c) 2009-2013 Edward Swartz

  All rights reserved. This program and the accompanying materials
  are made available under the terms of the Eclipse Public License v1.0
  which accompanies this distribution, and is available at
  http://www.eclipse.org/legal/epl-v10.html
 */
package v9t9.engine.sound;



import v9t9.common.hardware.ISoundChip;
import v9t9.common.machine.IMachine;
import v9t9.common.sound.MultiSoundTMS9919BConsts;

/**
 * Multiple packed TMS9919 chips.  This provides one traditional TMS9919
 * sound chip, followed by four TMS9919Bs, each with three ports (spaced by 2s).

 * @author ejs
 *
 */
public class MultiSoundTMS9919B extends BaseMultiSound {
	public MultiSoundTMS9919B(IMachine machine) {
		super(machine);
	}
	
	/* (non-Javadoc)
	 * @see v9t9.engine.sound.BaseMultiSound#doGenerateChips()
	 */
	@Override
	protected void doGenerateChips() {
		// 5 chips: the original TMS9919 on the console and 4 extra on the card
		this.chips = new SoundTMS9919[5];
		int regBase = 0;
		chips[0] = new SoundTMS9919(machine, "", "Console Chip", regBase);
		regBase = registerChip(chips[0], regBase);
		
		//chips[0] = new SoundTMS9919B(machine, "Console Chip");
		for (int i = 0; i < 4; i++) {
			chips[i + 1] = new SoundTMS9919B(machine, "C" + i + ":", "Chip #" + i, regBase);
			regBase = registerChip(chips[i + 1], regBase);
		}
	}
	
	public void writeSound(int addr, byte val) {
		if ((addr & 0xff) < 0xC0) {
			int mask = addr & 0x1e;
			
			if (mask == 0) {
				// Main chip.
				chips[0].writeSound(addr, val);
				return;
			}
			
			int chip = 1 + ((mask - 2) / 6);
			int offs = mask + 6 - 2 - (chip * 6);
			
			if (chip < chips.length) {
				chips[chip].writeSound(offs, val);
			}
		}
	}
	
	public void setAudioGate(int addr, boolean b) {
		chips[0].setAudioGate(addr, b);
	}
	
//	public void setCassette(int addr, boolean b) {
//		chips[0].setCassette(addr, b);
//	}

//	/* (non-Javadoc)
//	 * @see v9t9.common.hardware.ISoundChip#getCassetteVoice()
//	 */
//	@Override
//	public ICassetteVoice getCassetteVoice() {
//		return chips[0].getCassetteVoice();
//	}
	
	/* (non-Javadoc)
	 * @see v9t9.common.machine.IRegisterAccess#getGroupName()
	 */
	@Override
	public String getGroupName() {
		return MultiSoundTMS9919BConsts.GROUP_NAME;
	}

	/* (non-Javadoc)
	 * @see v9t9.common.hardware.ISoundChip#reset()
	 */
	@Override
	public void reset() {
		for (ISoundChip chip : chips) {
			chip.reset();
		}
	}
}