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Interrupt handling, Interrupt handling -6, Table 4-2. pci arbitration assignments -6 – Motorola MVME2400 User Manual

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Programming the MVME240x

4

The arbitration assignments for the MVME240x are shown in

Table 4-2

.

Interrupt Handling

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
.

Table 4-2. PCI Arbitration Assignments

PCI Bus Request

PCI Master(s)

PIB (Internal)

PIB

CPU

Hawk ASIC

Request 0

PMC Slot 2

Request 1

PMC Slot 1

Request 2

PCI Expansion Slot

Request 3

Ethernet

Request 4

Universe ASIC (VMEbus)