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Instructions and Flags

Although further analysis on this topic is still pending , I can anticipate the following:

-- ALU instructions affect all flags (Z,N,C,V).
-- Data transfer instructions (MOV, LD, STO, PUSH, POP) affect flags Z, N.
-- Increment/Decrement instructions affect flags Z, N, V.
-- Branch instructions affect none flag.

By not affecting flags, I mean that the previous status remains. The programmer needs to take this into account when placing conditional branch instructions within the code.

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