Interrupt Handling; Table 4-2. Pci Arbitration Assignments - Motorola MVME2401-1 Installation And Use Manual

Programming the MVME240x
4

Interrupt Handling

4-6
The arbitration assignments for the MVME240x are shown in

Table 4-2. PCI Arbitration Assignments

PCI Bus Request
PIB (Internal)
CPU
Request 0
Request 1
Request 2
Request 3
Request 4
The Hawk ASIC, which controls the PHB (PCI Host Bridge) and the
MPU/local bus interface functions on the MVME240x, performs interrupt
handling as well. Sources of interrupts may be any of the following:
The Hawk ASIC itself (timer interrupts, transfer error interrupts, or
memory error interrupts)
The processor (processor self-interrupts)
The PCI bus (interrupts from PCI devices)
The ISA bus (interrupts from ISA devices)
Figure 4-2 illustrates interrupt architecture on the MVME240x. For details
on interrupt handling, refer to the MVME2400-Series VME Processor
Module Programmer's Reference Guide.
PCI Master(s)
PIB
Hawk ASIC
PMC Slot 2
PMC Slot 1
PCI Expansion Slot
Ethernet
Universe ASIC (VMEbus)
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Table 4-2.