NEC 78K/0 Series User Manual page 102

PUSH
[Instruction format]
[Operation]
[Operand]
Mnemonic
PUSH PSW
rp
[Flag]
Z AC
[Description]
• The data of the register specified by the source operand (src) is saved to the stack.
[Description example]
PUSH AX; AX register contents are saved to the stack.
102
CHAPTER 5 EXPLANATION OF INSTRUCTIONS
PUSH src
When src = rp
(SP–1) ← src
,
H
(SP–2) ← src
,
L
← SP–2
SP
Operand(src)
CY
User's Manual U12326EJ4V0UM
When src = PSW
(SP–1) ← src
← SP–1
SP
Push
Push