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THE Z80 INSTRUCTIONS: INDIVIDUAL DESCRIPTION

ABBREVIATIONS

FLAG ON OFF
Carry
Sign
Zero
Parity
C (carry)
M (minus)
Z (zero)
PE (even)
NC (no carry)
P (plus)
NZ (non zero)
PO (odd)

• changed functionally according to operation
O flag is set to zero
1 flag is set to one
? flag is set randomly by operation
X special case, see accompanying note on that page
 
bit positions 3 and 5 are always random