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Table A-1. ENV Command Parameters (Continued)
ENV Parameter and Options
Network Autoboot Configuration
Parameters Pointer (NVRAM)
Memory Search Starting Address
Memory Search Ending Address
Memory Search Increment Size
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Configure and Environment Commands
Default
00000000
This is the address where the network interface
configuration parameters are to be
saved/retained in NVRAM; these parameters
are the necessary parameters to perform an
unattended network boot.
00000000
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-162LX
environment, each controller could be set to
start its work page at a unique address to allow
multiple debuggers to operate simultaneously.
00100000
Top limit of the Bug's search for a work page.
If a contiguous block of memory, 64KB in size,
is not found in the range specified by Memory
Search Starting Address and Memory Search
Ending Address parameters, then the bug will
place its work page in the onboard static RAM
on the MVME162LX. Default Memory Search
Ending Address is the calculated size of local
memory.
00010000
This multi-CPU feature is used to offset the
location of the Bug work page. This must be a
multiple of the debugger work page, modulo
$10000 (64KB). Typically, Memory Search
Increment Size is the product of CPU number
and size of the Bug work page. Example: first
CPU $0 (0 x $10000), second CPU $10000 (1 x
$10000), etc.
Meaning of Default
A
A-7
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