RELIANCE 45C340 Redundant input module

Use this command to display and configure the Board Information Block which is resident within the NVRAM. The board information block contains various elements that correspond to specific operational parameters of the MVME172LX board.The parameters that are quoted are left-justified character (ASCII) strings padded with space characters, and the quotes (") are displayed to indicate the size of the string. Parameters that are not quoted are considered data strings, and data strings are right-justified. The data strings are padded with zeroes if the length is not met. The Board Information Block is factory-configured before shipment. There is no need to modify block parameters unless the NVRAM is corrupted

ENV - Set Environment 

Use the ENV command to view and/or configure interactively all 172Bug operational parameters that are kept in Non-Volatile RAM (NVRAM). Refer to the Debugging Package for Motorola 68K CISC CPUs User’s Manual for a description of the use of ENV. Additional information on registers in the MVME172LX that affect these parameters appears in your MVME172 VME Embedded Controller Programmer’s Reference Guide. Listed and described below are the parameters that you can configure using ENV. The default values shown were those in effect when this publication went to print.

Memory Search Starting Address

Where the Bug begins to search for a work page (a 64KB block of memory) to use for vector table, stack, and variables. This must be a multiple of the debugger work page, modulo $10000 (64KB). In a multi-172 environment, each MVME172LX board could be set to start its work page at a unique address to allow multiple debuggers to operate simultaneously.

Top limit of the Bug’s search for a work page. If no 64KB contiguous block of memory is found in the range specified by Memory Search Starting Address and Memory Search Ending Address parameters, the bug will place its work page in the onboard static RAM on the MVME172LX. Default Memory Search Ending Address is the calculated size of local memory.

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