• Tomasz Wlostowski's avatar
    VME_IRQ_Controller: made IRQ line level-sensitive. · 35164028
    Tomasz Wlostowski authored
    There are two reasons for doing so:
    - compatibility with Wishbone and the VIC interrupt controller
    - possibility of losing an edge-triggered IRQ and hanging interrupts when
      different cores trigger interrupts very close to each other.
    The modified interrupter implements a retry mechanism, that is, if the IRQ line
    gets stuck for longer than certain period (g_retry_timeout), an IRQ cycle
    is repeated on the VME bus.
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