EightBitNet/MC6809/MC6809.UnitTest/AdcTests.cs
Adrian Conlon 72932cf462 Correct a few more style/correctness issues.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2019-05-06 11:02:20 +01:00

112 lines
3.7 KiB
C#

// <copyright file="AdcTests.cs" company="Adrian Conlon">
// Copyright (c) Adrian Conlon. All rights reserved.
// </copyright>
namespace EightBit
{
using Microsoft.VisualStudio.TestTools.UnitTesting;
[TestClass]
public class AdcTests
{
private readonly Board board = new Board();
private readonly MC6809 cpu;
public AdcTests() => this.cpu = this.board.CPU;
[TestInitialize]
public void Initialise()
{
this.board.RaisePOWER();
this.cpu.Step(); // Step over the reset
}
[TestCleanup]
public void Cleanup() => this.board.LowerPOWER();
[TestMethod]
public void TestImmediate()
{
this.board.Poke(0, 0x89);
this.board.Poke(1, 0x7c);
this.cpu.CC = EightBit.Chip.SetFlag(this.cpu.CC, (byte)StatusBits.CF);
this.cpu.A = 0x3a;
this.cpu.Step();
Assert.AreEqual(0xb7, this.cpu.A);
Assert.AreEqual(0, this.cpu.Zero);
Assert.AreNotEqual(0, this.cpu.HalfCarry);
Assert.AreNotEqual(0, this.cpu.Overflow);
Assert.AreNotEqual(0, this.cpu.Negative);
Assert.AreEqual(0, this.cpu.Carry);
Assert.AreEqual(2, this.cpu.Cycles);
}
[TestMethod]
public void TestImmediateADCANoC1()
{
this.cpu.A = 0x5;
this.cpu.CC = 0;
this.board.Poke(0, 0x89);
this.board.Poke(1, 0x02);
this.cpu.Step();
Assert.AreEqual(7, this.cpu.A);
Assert.AreEqual(0, this.cpu.Carry);
Assert.AreEqual(0, this.cpu.Overflow);
Assert.AreEqual(0, this.cpu.Zero);
Assert.AreEqual(0, this.cpu.Negative);
Assert.AreEqual(0, this.cpu.HalfCarry);
Assert.AreEqual(2, this.cpu.Cycles);
}
/* Test half-carry $E + $2 = $10 */
[TestMethod]
public void TestImmediateADCANoC2()
{
this.cpu.A = 0xe;
this.cpu.CC = 0;
this.board.Poke(0, 0x89);
this.board.Poke(1, 0x02);
this.cpu.Step();
Assert.AreEqual(0x10, this.cpu.A);
Assert.AreEqual(0, this.cpu.Carry);
Assert.AreEqual(0, this.cpu.Overflow);
Assert.AreEqual(0, this.cpu.Zero);
Assert.AreEqual(0, this.cpu.Negative);
Assert.AreNotEqual(0, this.cpu.HalfCarry);
Assert.AreEqual(2, this.cpu.Cycles);
}
/* Add $22 and carry to register A ($14) */
[TestMethod]
public void TestImmediateADCAWiC()
{
this.cpu.A = 0x14;
this.cpu.CC = (byte)(StatusBits.CF | StatusBits.HF);
this.board.Poke(0, 0x89);
this.board.Poke(1, 0x22);
this.cpu.Step();
Assert.AreEqual(0x37, this.cpu.A);
Assert.AreEqual(0, this.cpu.Carry);
Assert.AreEqual(0, this.cpu.Overflow);
Assert.AreEqual(0, this.cpu.Zero);
Assert.AreEqual(0, this.cpu.Negative);
Assert.AreEqual(0, this.cpu.HalfCarry);
Assert.AreEqual(2, this.cpu.Cycles);
}
/* Test that half-carry is set when adding with a carry */
[TestMethod]
public void TestImmediateADCAWiHC()
{
this.cpu.A = 0x14;
this.cpu.CC = (byte)StatusBits.CF;
this.board.Poke(0, 0x89);
this.board.Poke(1, 0x2B);
this.cpu.Step();
Assert.AreEqual(0x40, this.cpu.A);
Assert.AreEqual(0, this.cpu.Carry);
Assert.AreNotEqual(0, this.cpu.HalfCarry);
Assert.AreEqual(2, this.cpu.Cycles);
}
}
}