MVME5100 Single Board Computer Programmer's Reference Guide

4Hawk Programming Details
Introduction
PCI Arbitration
4
This chapter contains details of several programming functions associated
with the Hawk ASIC chip.
PCI arbitration must be provided by the host board.
Hawk MPIC External Interrupts
MPIC
IRQ
The MVME5100 Hawk MPIC is fully compliant with the industry
standard Multi-Processor Interrupt Controller Specification. Following a
power-up reset, the MPIC is configured to operate in the parallel interrupt
delivery mode on the MVME5100 series:
Edge/
Level
Table 4-1. MPIC Interrupt Assignments
Polarity Interrupt Source Notes
IRQ0 Level High PIB (8259) from IPMC761 in PMC Slot 1 3
IRQ1 Level Low TL16C550 UART Serial Port 1, 2 1, 4
IRQ2 Level Low PCI-Ethernet Device Port 1 (Front panel)
IRQ3 Level Low Hawk WDT1O_L / WDT2O_L 5
IRQ4 Level Low Thermal Alarm output (TOUT) of Dallas
Semiconductor DS1621
IRQ5 Level Low PCI-VME INT 0 (Universe LINT0#) 2
IRQ6 Level Low PCI-VME INT 1 (Universe LINT1#) 2
IRQ7 Level Low PCI-VME INT 2 (Universe LINT2#) 2
IRQ8 Level Low PCI-VME INT 3 (Universe LINT3#) 2
6
4-1