參數(shù)資料
型號： 78064Y
廠商： NEC Corp.
英文描述： Common to 78K/0 Series
中文描述： 共同的78K / 0系列
文件頁數(shù)： 97/129頁
文件大?。?/td> 644K
代理商： 78064Y
CHAPTER 5 EXPLANATION OF INSTRUCTIONS
97
User's Manual U12326EJ4V0UM
Break
BRK
Software Vectored Interrupt
[Instruction format]
BRK
[Operation]
(SP
–
1)
←
PSW,
(SP
–
2)
←
(PC+1)
H
,
(SP
–
3)
←
(PC+1)
L
,
IE
←
0,
SP
←
SP
–
3,
PC
H
←
(3FH),
PC
L
←
(3EH)
[Operand]
None
[Flag]
Z
AC
CY
[Description]
This is a software interrupt instruction.
PSW and the next instruction address (PC+1) are saved to the stack. After that, the IE flag is cleared (0)
and the saved data is branched to the address indicated with the word data at the vector address (003EH).
Because the IE flag is cleared (0), the subsequent maskable vectored interrupts are disabled.
The RETB instruction is used to return from the software vectored interrupt generated with this instruction.
相關(guān)PDF資料
PDF描述
78070A Common to 78K/0 Series
78070AY Common to 78K/0 Series
78075B Common to 78K/0 Series
78075BY Common to 78K/0 Series
78078 Common to 78K/0 Series
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