Changes
Z80
,/* Registers */
* bit3 - F3 - Undocumented by Zilog
* bit2 - PF - Parity Flag (also sometimes used for Overflow)
* bit1 - NF - Negation Negate Flag (last ALU op was subtract or compare)
* bit0 - CF - Carry Flag
|| Flags (including F5 and F3) are affected by most operations.
