Description Of Operation Column; Description Of Flag Operation Column - NEC 78K0 Series User Manual

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
( ): Memory contents indicated by address or register contents in parentheses
X , X : Higher 8 bits and lower 8 bits of 16-bit register
H L
∧:
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)

28.1.3 Description of flag operation column

(Blank): Not affected
0: Cleared to 0
1: Set to 1
×:
Set/cleared according to the result
R: Previously saved value is restored
CHAPTER 28 INSTRUCTION SET
Preliminary User's Manual U17260EJ3V1UD
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