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CHAPTER 28 INSTRUCTION SET
28.1.2 Description of “operation” column
A : A register; 8-bit accumulator
X : X register
B : B register
C : C register
D : D register
E : E register
H : H register
L : L register
AX : AX register pair; 16-bit accumulator
BC : BC register pair
DE : DE register pair
HL : HL register pair
PC : Program counter
SP : Stack pointer
PSW : Program status word
CY : Carry flag
AC : Auxiliary carry flag
Z : Zero flag
RBS : Register bank select flag
IE : Interrupt request enable flag
NMIS : Non-maskable interrupt servicing flag
( ) : Memory contents indicated by address or register contents in parentheses
x
H, xL : Higher 8 bits and lower 8 bits of 16-bit register
/\ : Logical product (AND)
\/ : Logical sum (OR)
\/
: Exclusive logical sum (exclusive OR)
—— : Inverted data
addr16 : 16-bit immediate data or label
jdisp8 : Signed 8-bit data (displacement value)
23.1.3 Description of “flag operation” column
(Blank) : Not affected
0 : Cleared to 0
1 : Set to 1
x : Set/cleared according to the result
R : Previously saved value is restored