m6800/m6802 instruction set
Decrement Accumulator		What links here?
Decrement Accumulator
MemonicMode OpcodeCyclesBytes
DECA Inherent 4A 2 1
DECB Inherent 5A 2 1


A = A - 1
B = B - 1

Results:
N set if bit 7 is 1
Z set if all bits are 0
V operand = 1000000 before operation?
C not affected
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MC6802 - instruction set - Decrement Accumulator
Bible - Dispensationalism
filename:microprocessors - MC6800/MC6802 - instruction set - Decrement Accumulator
filename:microprocessors%20%2D%20MC6800%2FMC6802%20%2D%20instruction%20set%20%2D%20Decrement%20Accumulator
last edit:January 31 2010 14:02:38 (5839 days ago)
ct = 1769517810.000000 = January 27 2026 07:43:30
ft = 1264964558.000000 = January 31 2010 14:02:38
dt = 504553252.000000