OVP Peripheral Model: Amd79C970

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


Implements part of the AMD AM79C97xx series Ethernet devices.

diagnosticlevel: bits 0:1 give levels for the network hardware. bits 2:3 give levels for the user:mode SLIRP interface.


Sufficient is implemented to Boot MIPS Linux and support ethernet TCP/IP services.


AMD Am79C973/Am79C975 PCnet-FAST III Single-Chip 10/100 Mbps PCI Ethernet Controller with Integrated PHY Datasheet


The 79C970 peripheral model is located in an Imperas/OVP installation at the VLNV: / peripheral / 79C970 / 1.0.

Peripheral Instance Parameters

This model accepts the following parameters:

Table : Peripheral Parameters

PCIslotuns32Set the PCI slot at which the Ethernet card is installed
PCIfunctionuns32Set the PCI function of the device. The default of 0 is correct for this device.
tapDevicestringThe name of the TAP device
redirstringUser mode redirection of host port to virtual port (using SLiRP), command format <protocol>:<host port>:<ip address>:<virtual port>
tftpPrefixstringPath to the root of the tftp directory. To use tftp, fetch from the host (gw) IP address.
macaddressuns64The MAC address (hex number)
macprefixuns32The first two bytes of MAC addresses (hex number) on the VLAN
networkstringThe (v4) IP address of the local network device.
logfilestringThe file to which Ethernet frames should be logged. Uses pcap file format, viewable by Wireshark and other programs. Do not use if this device is connected to a packetnet
recordstringRecord external events into this file
replaystringReplay external events from this file

Net Ports

This model has the following net ports:

Table 1: Net Ports

NameTypeMust Be ConnectedDescription
intOut0outputF (False)

Bus Master Ports

This model has the following bus master ports:

Bus Master Port: dmaPort

Table 2: dmaPort

NameAddress Width (bits)Description
dmaPort32PCI DMA bus connection.

Bus Slave Ports

This model has the following bus slave ports:

Bus Slave Port: busPort

Table 3: Bus Slave Port: busPort

NameSize (bytes)Must Be ConnectedDescription
busPort0x8T (True)PCI main bus connection for register access.

No address blocks have been defined for this slave port.

Bus Slave Port: PCIconfig

Table 4: Bus Slave Port: PCIconfig

NameSize (bytes)Must Be ConnectedDescription
PCIconfig0x800F (False)PCI configuration bus connection.

No address blocks have been defined for this slave port.

Packetnet Ports

This model has the following packetnet ports:

Packetnet Port: phy

Table 5: phy

NameMaximum Packet Size (bytes)Must Be ConnectedDescription
phy1524F (False)The port to connect the packetnet virtual network

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 6: Publicly available platforms using peripheral '79C970'

Platform NameVendor

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