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m6800/m6802 instruction set
Subtract Memory from Accumulator with Carry
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Subtract Memory From Accumulator With Carry
MemonicMode OpcodeCyclesBytes
SBCA Immediate 82 2 2
Direct 92 3 2
Indexed A2 5 2
Extended B2 4 3
SBCB Immediate C2 2 2
Direct D2 3 2
Indexed E2 5 2
Extended F2 4 3


A = A - M - C
B = B - M - C

Results:
H not affected
N set if bit 7 is 1
Z set if all bits are 0
V set on 2's complement overflow
C set on carry from bit 7
MC6802 - instruction set - Subtract Memory from Accumulator with Carry
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last edit:February 06 2010 14:05:36 (5853 days ago)
ct = 1771250578.000000 = February 16 2026 09:02:58
ft = 1265483136.000000 = February 06 2010 14:05:36
dt = 505767442.000000