From memory the IX and IY instructions took a lot of clock cycles and I avoided them unless there was a really good reason to use them. I've just had a quick l

From memory the IX and IY instructions took a lot of clock cycles and I avoided them unless there was a really good reason to use them. I've just had a quick look at an instruction cycle table and it seems that without indexing they took 4 cycles more than HL then with an index that increased to 12 more. Ref from search returning http://www.z80.info/z80time.txt http://www.z80.info/z80time.txt