Zilog EZ80F916 - Manual (Page 369)

eZ80
®
CPU
User Manual
UM007715-0415 CPU Instruction Set
360
SUB A, n
Subtract without Carry
Operation
A  A – n
Description
The 8-bit immediate value n is subtracted from the contents of the accumulator, A. The
result is written to the accumulator.
Condition Bits Affected
Attributes
S
Set if result is negative; reset otherwise.
Z
Set if result is 0; reset otherwise.
H
Set if borrow from bit 4; reset otherwise.
P/V
Set if overflow; reset otherwise.
N
Set.
C
Set if borrow; reset otherwise.
Mnemonic Operand ADL Mode Cycle Opcode (hex)
SUB
A,n X 2
D6, nn