2-2
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Startup and Operation
2
Initial Conditions
After you have verified that all necessary hardware preparation has been
done, that all connections have been made correctly, and that the
installation is complete, you can power up the system. Applying power to
the system (as well as resetting it) triggers an initialization of the
MVME172P4’s MPU, hardware, and firmware along with the rest of the
system.
The Flash-resident firmware initializes the devices on the MVME172P4
board in preparation for booting the operating system. The firmware is
shipped from the factory with a set of defaults appropriate to the board. In
most cases there is no need to modify the firmware configuration before
you boot the operating system. For specifics in this regard, refer to Chapter
3 and to the user documentation for the MVME172Bug firmware.
SCON
LED (DS4, green)
System controller. Lights when the VMEchip2 ASIC is functioning
as VMEbus system controller.
LAN
LED (DS5, green)
LAN activity. Lights when the LAN controller is functioning as local
bus master.
FUSE
LED (DS6, green)
Fuse OK. Indicates that +5Vdc, +12Vdc, and –12Vdc power is
available to the LAN and SCSI interfaces and IP connectors.
SCSI
LED (DS7, green)
SCSI activity. Lights when the SCSI controller is functioning as local
bus master.
VME
LED (DS8, green)
VME activity. Lights when the board is using the VMEbus or being
accessed from the VMEbus.
Table 2-1. MVME172P4 Front Panel Controls
Control/Indicator
Function
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