65 lines
1.6 KiB
C#
65 lines
1.6 KiB
C#
using System;
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namespace BizHawk.Emulation.Computers.Commodore64.MOS
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{
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// base class for MOS Technology timer chips
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public abstract class Timer
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{
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protected bool pinIRQ;
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protected uint[] timer;
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protected uint[] timerLatch;
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protected bool[] timerOn;
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protected bool[] underflow;
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public Func<byte> ReadDirA = (() => { return 0xFF; });
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public Func<byte> ReadDirB = (() => { return 0xFF; });
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public Func<byte> ReadPortA = (() => { return 0xFF; });
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public Func<byte> ReadPortB = (() => { return 0xFF; });
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public Action<byte> WriteDirA = ((byte val) => { });
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public Action<byte> WriteDirB = ((byte val) => { });
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public Action<byte> WritePortA = ((byte val) => { });
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public Action<byte> WritePortB = ((byte val) => { });
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public Timer()
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{
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timer = new uint[2];
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timerLatch = new uint[2];
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timerOn = new bool[2];
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underflow = new bool[2];
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}
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protected void HardResetInternal()
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{
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WriteDirA(0x00);
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WriteDirB(0x00);
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timer[0] = 0xFFFF;
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timer[1] = 0xFFFF;
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timerLatch[0] = timer[0];
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timerLatch[1] = timer[1];
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pinIRQ = true;
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}
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public bool IRQ
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{
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get
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{
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return pinIRQ;
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}
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}
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protected void SyncInternal(Serializer ser)
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{
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ser.Sync("pinIRQ", ref pinIRQ);
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ser.Sync("timer0", ref timer[0]);
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ser.Sync("timer1", ref timer[1]);
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ser.Sync("timerLatch0", ref timerLatch[0]);
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ser.Sync("timerLatch1", ref timerLatch[1]);
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ser.Sync("timerOn0", ref timerOn[0]);
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ser.Sync("timerOn1", ref timerOn[1]);
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ser.Sync("underflow0", ref underflow[0]);
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ser.Sync("underflow1", ref underflow[1]);
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}
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}
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}
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