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can i RET in the interrupt insted of RETI

Hi! i use p89v51rd2fa microcontroller and microversion 3 C51 compiler. if i write an interrupt function in c the compiler create a asm code like

push ACC
push PSW

a=b;

pop PSW
pop ACC
RETI

can i change the RETI to RET.
regrads,
venkatesh.

Parents

0 kt venkatesh over 17 years ago in reply to Thomas

Hi! it works with RETI also when i make the changes denoted by Erik.Thanks Erik and Thanks Thomas.here is the code.

                 CSEG at 0x0B
                JB    FLAG,?appT0x ; in app mode
                ljmp  02456H
?appT0x:
                ljmp  0400BH
                RET

                CSEG at 0x23
                JB    FLAG,?appT4x ; in app mode
                ljmp  2468H
?appT4x:
                ljmp  04023h
                RET

there is no change in interrupt [RETI].
regards,
venkatesh.

Reply

0 kt venkatesh over 17 years ago in reply to Thomas

Hi! it works with RETI also when i make the changes denoted by Erik.Thanks Erik and Thanks Thomas.here is the code.

                 CSEG at 0x0B
                JB    FLAG,?appT0x ; in app mode
                ljmp  02456H
?appT0x:
                ljmp  0400BH
                RET

                CSEG at 0x23
                JB    FLAG,?appT4x ; in app mode
                ljmp  2468H
?appT4x:
                ljmp  04023h
                RET

there is no change in interrupt [RETI].
regards,
venkatesh.

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