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    • 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.
      35164028
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