H134622 - NETWARE 3.12: LOST HARDWARE INTERRUPT
 
 SYMPTOM:
 NetWare 3.12 issues lost hardware interrupt errors (on the
 server console) when logging onto the Server or performing any
 network activity.
 
 PROBLEM ISOLATION AIDS:
 The system is a PC Server 310 (8639), a PC 300 (65xx), or a PC
 700 (68xx) with BOTH an IBM Auto ISA 16/4 Token Ring Adapter FRU
 p/n41H8452 (Option p/n92G7632) and an Adaptec AHA-2940 PCI SCSI
 Adapter FRU p/n06H5250 with BIOS 1.11, 1.16, or 1.19 installed.
 
 FIX:
 Ignore and disable the interrupt alerts by adding the following
 statement to the STARTUP.NCF file:
 SET DISPLAY INTERRUPT ALERTS = OFF
 -OR-
 Install NetWare 4.x
 -OR-
 Install a PCI Token Ring Adapter.
 
 This alert is actually a "spurious interrupt" warning message
 and does not cause any disruption in the network activity.
 
 The alert is due to "extra level trigger to edge trigger
 conversion" pulse that the VLSI interrupt controller is
 generating.  Normally, a PCI interrupt (two pulses internal to
 the VLSI Interrupt Controller Chip) is converted to an ISA
 interrupt.  In this case, three(3) or more pulses are generated
 by the VLSI Controller after receiving an interrupt request from
 the Adaptec SCSI Adapter.  This third pulse causes the "lost
 hardware interrupt " error message to appear.
 
 Adaptec is a trademark of Adaptec, Inc.
 NetWare is a trademark of Novell, Inc.
 
 October 21, 1996