参数资料
型号: 78P0914
厂商: NEC Corp.
英文描述: Common to 78K/0 Series
中文描述: 共同的78K / 0系列
文件页数: 97/129页
文件大小: 644K
代理商: 78P0914
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.
相关PDF资料
PDF描述
780208 Common to 78K/0 Series
780228 Common to 78K/0 Series
780308 Common to 78K/0 Series
780308Y Common to 78K/0 Series
78058FY Common to 78K/0 Series
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