NEC 78K/0S Series User Manual page 79

INC
[Instruction format]
[Operation]
[Operand]
Mnemonic
INC r
saddr
[Flag]
Z AC
× ×
[Description]
•
The destination operand (dst) contents are incremented by only one.
•
If the increment result is 0, the Z flag is set (1). In all other cases, the Z flag is cleared (0).
•
If the increment generates a carry from bit 3 to bit 4, the AC flag is set (1). In all other cases, the AC flag is
cleared (0).
•
Because this instruction is frequently used for a counter for repeated operations, the CY flag contents are not
changed (to hold the CY flag contents in multiple-byte operation).
[Description example]
INC B; The B register is incremented.
CHAPTER 5 EXPLANATION OF INSTRUCTIONS
INC dst
dst ← dst + 1
Operand (dst)
CY
User's Manual U11047EJ3V0UM00
Increment
Byte Data Increment
79