Z80 Interrupt Question

maikel
2008-08-20
2013-03-12
  • maikel

    maikel - 2008-08-20

    I'im working with z80 Interrupt mode 2. And all work fine but only once. Should I add the EI instruction after the isr code? The instruction reti does'nt do this??

    Thank's

     
    • Jacques Pelletier

      An EI is necessary before RETI to enable interrupts after the interrupt routine has ended.
      RETI doesn't enable interrupts by itself.

       

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