public void ResolvesIndexedIndirectAddress()
{
var memory = new VirtualMemory();
var state = Mos6502State.PowerUp.With(pc: 0x01, x: 0x02);
memory.Attach(0x0000, new byte[] { 0xAB, 0xAB, 0x10 });
memory.Attach(0x0010, new byte[] { 0xAB, 0xAB, 0xEF, 0xBE });
var(address, _) = Mos6502Executor.ResolveAddress(Mos6502AddressingMode.IndexedIndirect, in state, memory);
Assert.Equal(0xBEEF, address);
}
public void IndicatesIfAPageBoundaryIsCrossedByIndirectIndexing()
{
var memory = new VirtualMemory();
var state = Mos6502State.PowerUp.With(pc: 0x01, y: 0x01);
memory.Attach(0x0000, new byte[] { 0xAB, 0xAB, 0x12 });
memory.Attach(0x0010, new byte[] { 0xAB, 0xAB, 0xFF, 0x1F });
var(address, crossesBoundary) = Mos6502Executor.ResolveAddress(Mos6502AddressingMode.IndirectIndexed, in state, memory);
Assert.Equal(0x2000, address);
Assert.True(crossesBoundary);
}
public void ResolvesIndirectIndexedAddress()
{
var memory = new VirtualMemory();
var state = Mos6502State.PowerUp.With(pc: 0x01, y: 0x02);
memory.Attach(0x0000, new byte[] { 0xAB, 0xAB, 0x12 });
memory.Attach(0x0010, new byte[] { 0xAB, 0xAB, 0x10, 0x10 });
var(address, crossesBoundary) = Mos6502Executor.ResolveAddress(Mos6502AddressingMode.IndirectIndexed, in state, memory);
Assert.Equal(0x1012, address);
Assert.False(crossesBoundary);
}
