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Firmware Settings MOTLoad Firmware
MVME7100 Single Board Computer Installation and Use (6806800E08A)
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6.5 Firmware Settings
The following sections provide additional information pertaining to the MVME7100 VME bus
interface settings as configured by MOTLoad. A few VME settings are controlled by hardware
jumpers while the majority of the VME settings are managed by the firmware command utility
vmeCfg.
6.5.1 Default VME Settings
As shipped from the factory, the MVME7100 has the following VME configuration programmed
via Global Environment Variables (GEVs) for the Tsi148 VME controller. The firmware allows
certain VME settings to be changed in order for the user to customize the environment. The
following is a description of the default VME settings that are changeable by the user. For more
information, refer to the MOTLoad User’s Manual and Tundra’s Tsi148 User Manual, listed in
Appendix B, Related Documentation.
z MVME7100> vmeCfg -s -m
Displaying the selected Default VME Setting
- interpreted as follows:
VME PCI Master Enable [Y/N] = Y
MVME7100>
The PCI Master is enabled.
z MVME7100> vmeCfg -s -r234
Displaying the selected Default VME Setting
- interpreted as follows:
VMEbus Master Control Register = 00000003
MVME7100>
The VMEbus Master Control Register is set to the default (RESET) condition.
z MVME7100> vmeCfg -s -r238
Displaying the selected Default VME Setting
- interpreted as follows:
VMEbus Control Register = 00000008
MVME7100>
The VMEbus Control Register is set to a Global Timeout of 2048 μseconds.
z MVME7100> vmeCfg -s -r414
VME settings in MOTLoad are preserved through the use of Global Environment
Variables (GEVs). Configuration GEVs are executed only at power-on reset. Therefore,
if VME configuration changes are implemented through vmeCfg and board reset must
be effected for the changes to be implemented in MOTLoad.