Description Of "Operation" Column; Description Of "Flag" Column - NEC 78K0S/KA1+ User Manual
8-bit single-chip microcontrollers
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Also See for 78K0S/KA1+:
- Preliminary user's manual (304 pages) ,
- Application note (49 pages) ,
- Application note (44 pages)
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19.1.2 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
IE:
Interrupt request enable flag
( ):
Memory contents indicated by address or register contents in parentheses
×
, ×
:
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)
19.1.3 Description of "Flag" column
(Blank):
Unchanged
0:
Cleared to 0
1:
Set to 1
×:
Set/cleared according to the result
R:
Previously saved value is stored
CHAPTER 19 INSTRUCTION SET OVERVIEW
User's Manual U16898EJ3V0UD
321
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