beautypg.com

Scanning pci buses, Modifying the pci configuration contents, 1 scanning pci buses – AMD SimNow Simulator 4.4.4 User Manual

Page 148: 2 modifying the pci configuration contents

background image

AMD Confidential

User Manual

September 12

h

, 2008

136

Chapter 8: PCI Configuration Viewer

8.1 Scanning PCI Buses

To view the PCI Config Viewer Dialog select the "View→Show PCI Config Viewer
entry from the Main Window menu. To scan a PCI bus, you must first load a bsd file that
contains a CPU device. The dialog should look like the one shown in Figure 8-1.

8.2 Modifying the PCI Configuration contents

To modify the PCI configuration registers of a specific PCI device, select a device listed
in the PCI Config Viewers list box. The PCI Config Viewer shows the contents of all PCI
configuration registers of the selected device. To modify a certain byte of a PCI
configuration register, click on the desired hex value and enter a new hex value. To apply
the changes, click on the „Apply Register Modifications‟ button.

Read-only bits cannot be modified using the PCI Config Viewer. Modified values appear
in red in the PCI configuration register list until you click on the „Apply Register
Modifications
‟ button or close the PCI Config Viewer dialog.

To change the byte view of the PCI configuration registers to a dword view, check the
DWORD PCI Access‟ check box.