Interrupts, 917
  68000 interrupt request signals, 517
  68000 priority levels, 517
  autovectors, 518
  deferred, 519
  disable, 520
  disabling, 530
  Exceptions, 473
  handlers, 519, 521
  hardware registers, 517
  non-maskable (NMI), 519
  priorities, 519
  server return value, 525
  servers, 519, 525
  software, 527
  Task private, 473