public override PICDataAddress RemapDataAddress(PICDataAddress lAddr)
{
ushort uAddr = lAddr?.ToUInt16() ?? throw new ArgumentNullException(nameof(lAddr));
if (uAddr >= dataMap.remapTable.Length)
{
return(lAddr);
}
var mAddr = dataMap.remapTable[uAddr];
return(mAddr == null ? lAddr : PICDataAddress.Ptr(mAddr));
}
public override bool TryGetAbsDataAddress(PICBankedAddress bAddr, out PICDataAddress absAddr)
{
if (bAddr == null)
{
throw new ArgumentNullException(nameof(bAddr));
}
absAddr = null !;
IMemoryRegion?regn = null;
if (PICRegisters.TryGetAlwaysAccessibleRegister(bAddr, out var reg))
{
regn = PICMemoryDescriptor.GetDataRegionByAddress(reg.Traits.RegAddress.Addr !);
}
else if (bAddr.BankSelect.IsValid)
{
regn = GetDataRegionBySelector(bAddr.BankSelect);
}
if (regn != null)
{
absAddr = bAddr.ToDataAddress(regn);
}
return(absAddr != null);
}
/// <summary>
/// Remap a data memory address.
/// </summary>
/// <param name="lAddr">The logical memory address.</param>
/// <returns>
/// The physical memory address.
/// </returns>
public override PICDataAddress RemapDataAddress(PICDataAddress lAddr)
=> throw new NotSupportedException("PIC18 has no remapped data region.");
