Talk:NEC µPD780C

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[edit] SCF and CCF instructions

This is my own research, so I can't include it in the article, but I did notice that the undocumented flags are affected differently for the SCF and CCF instructions, based on tests performed on 48K and +2A ZX Spectrums. I believe that the 48K in question had a NEC Z80, and the +2A had a Zilog Z80. I'm not aware of any other differences in the behaviour of Zilog and NEC Z80s, though. --StuartBrady (Talk) 16:46, 22 May 2007 (UTC)