// "If registers D and E contain 38H and FFH respectively,
// the instruction: INX D will cause register D to contain 39H and register E to contain OOH."
private int INX(IWordOperandStrategy rp)
{
var i = rp.Read(this);
i++;
rp.Write(this, i);
return(5);
}
// DAD Double add, 16 bit
// The 16-bit number in the specified register pair is added to the 16-bit number held in the Hand L registers using two's complement arithmetic.
// The result replaces the contents of the H and L registers
private int DAD(IWordOperandStrategy rp)
{
var rpVal = rp.Read(this);
var hlVal = registers[RegisterIndexPair.HL];
var res = hlVal + rpVal;
registers[RegisterIndexPair.HL] = res & 0xffff;
Flags = Flags.Set(FlagIndex.Carry, (res & 0x10000) != 0);
return(10);
}
private int LXI(IWordOperandStrategy rp, byte lo, byte hi)
{
rp.Write(this, (hi << 8) | lo);
return(10);
}
