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DP80390 датащи(PDF) 69 Page - Digital Core Design

номер детали DP80390
подробное описание детали  Pipelined High Performance Microcontroller Instructions set details ver 3.10
PDF  84 Pages
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производитель  DCD [Digital Core Design]
домашняя страница  http://www.digitalcoredesign.com
Logo DCD - Digital Core Design

DP80390 датащи(HTML) 69 Page - Digital Core Design

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DP80390 Instructions set details
- 69 -
All trademarks mentioned in this document
http://www.DigitalCoreDesign.com
are trademarks of their respective owners.
http://www.dcd.pl
Copyright 1999-2003 DCD – Digital Core Design. All Rights Reserved.
3.33.
RETI *
3.33.1.
LARGE
Function:
Return from interrupt
Description:
RETI pops the PC successively from the stack, and restores the
interrupt logic to accept additional interrupts at the same priority level as
the one just processed. The stack pointer is left decremented by two.
No other registers are affected; the PSW is not automatically restored to
its pre-interrupt status. Program execution continues at the resulting
address, which is generally the instruction immediately after the point at
which the interrupt request was detected. If a lower or same-level
interrupt is pending when the RETI instruction is executed, that one
instruction will be executed before the pending interrupt is processed.
Operation:
(PC15-8)
← ((SP))
(SP)
← (SP) - 1
(PC7-0)
← ((SP))
(SP)
← (SP) - 1
Bytes:
1
Cycles:
4
Encoding:
0
0
1
1
0
0
1
0



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