INTERRUPT PROGRAMMING
ARCHITECTURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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TMR0
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TMR1
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INT0
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INT1
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Detailed explanation-1: -The INTCON register contains these interrupts: INT Pin Interrupt, the RB Port Change Interrupt, and the TMR0 Overflow Interrupt.
Detailed explanation-2: -SETTING the INTE bit allows an interrupt from the signal on RB0, CLEARING this bit disables the interrupt. bit 3: RBIE: The Port Change Interrupt Enable bit allows an interrupt when there is a change of state on pins RB7, RB6, RB5 and RB4 on PORTB.
Detailed explanation-3: -INT0IF: This is External Interrupt 0 (INT0) flag bit. INT0IE: This bit enables/disables the External Interrupt 0. PEIE/GIEL: This bit is used to enable/disable all the peripheral interrupts (Internal interrupts) of the controller. But GIE/GIEH bit must be set to high first.
Detailed explanation-4: -INTCON Register: Bit 7: GIE (Global Interrupt Enable bit): enables or disables all INTs. Bit 6: EEIE (EEPROM Write Complete Interrupt Enable bit): enables an INT at the end of a writing routine to EEPROM.