RELIANCE 45C15D Digital quantity logic module

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 MVME172LX’s MPU, hardware, and firmware along with the rest of the system. The Flash-resident firmware initializes the devices on the MVME172LX board in preparation for booting the operating system. The firmware is shipped from the factory with an appropriate set of defaults. 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.

Applying Power 

 When you power up (or when you reset) the system, the firmware executes some self-checks and proceeds to the hardware initialization. The system startup flows in a predetermined sequence, following the hierarchy inherent in the processor and the MVME172LX hardware. The figure below charts the flow of the basic initialization sequence that takes place during system startup.

Pre-Startup Checklist 

Before you power up the MVME172LX system, be sure that the following conditions exist: 1. Jumpers and/or configuration switches on the MVME172LX VME Embedded Controller and associated equipment are set as required for your particular application. 2. The MVME172LX board is installed and cabled up as appropriate for your particular chassis or system, as outlined in Chapter 1. 3. The terminal that you plan to use as the system console is connected to the console port (serial port 1) on the MVME172LX module.

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