OVP Peripheral Model: Intel8259A

Model Specific Information

This page provides introductory usage information for an Imperas OVP peripheral behavioral model. The page is split into sections providing specific information for this peripheral, including any ports for connecting into a platform, registers, other component parts, and configuration options and general information for peripheral modeling with Imperas OVP.


Open Source Apache 2.0


Intel 8259A Programmable Interrupt Controller (PIT).


This model has sufficient functionality to allow a Linux Kernel to Boot on the MIPS:MALTA platform.


Intel 8259A Datasheet. MIPS Malta Platform Reference Guide.


The 8259A peripheral model is located in an Imperas/OVP installation at the VLNV: / peripheral / 8259A / 1.0.

Peripheral Instance Parameters

This model accepts the following parameters:

Table : Peripheral Parameters

spenstringConfigure the PIC as a "master" or "slave"

Net Ports

This model has the following net ports:

Table 1: Net Ports

NameTypeMust Be ConnectedDescription
ir0inputF (False)
ir1inputF (False)
ir2inputF (False)
ir3inputF (False)
ir4inputF (False)
ir5inputF (False)
ir6inputF (False)
ir7inputF (False)
casinoutF (False)
intpoutputT (True)

Bus Master Ports

This model has the following bus master ports:

Bus Master Port: cascade

Table 2: cascade

NameAddress Width (bits)Description

Bus Slave Ports

This model has the following bus slave ports:

Bus Slave Port: io

Table 3: Bus Slave Port: io

NameSize (bytes)Must Be ConnectedDescription
io0x2T (True)

Table 4: Bus Slave Port: io Registers:

NameOffsetWidth (bits)DescriptionR/Wis Volatile

Bus Slave Port: PCIackS

Table 5: Bus Slave Port: PCIackS

NameSize (bytes)Must Be ConnectedDescription
PCIackS0x1F (False)

Table 6: Bus Slave Port: PCIackS Registers:

NameOffsetWidth (bits)DescriptionR/Wis Volatile

Bus Slave Port: elcr

Table 7: Bus Slave Port: elcr

NameSize (bytes)Must Be ConnectedDescription
elcr0x1T (True)

No address blocks have been defined for this slave port.

Platforms that use this peripheral component

Peripheral components can be used in many different platforms, including those developed by Imperas or by other users of OVP. You can use this peripheral in your own platforms.

Table 8: Publicly available platforms using peripheral '8259A'

Platform NameVendor

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