Motorola MVME167 Series Installation Manual page 139

Table A-1. ENV Command Parameters (Continued)
ENV Parameter and Options
Network Auto Boot ConÞguration
Parameters Pointer (NVRAM)
Memory Search Starting Address
Setting Environment to Bug/Operating System
Default Meaning of Default
00000000 This is the address where the network
interface conÞguration parameters
are to be saved in NVRAM; these
parameters are the necessary
parameters to perform an unattended
network boot.
!
Caution
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-167
environment, each MVME167 could
be set to start its work page at a
unique address to allow multiple
debaters to operate simultaneously
from the same memory.
If you use the NIOT
debugger command, these
parameters need to be
saved in the NVRAM,
somewhere in the address
range $FFFC0000 through
$FFFC0FFF. The NIOT
parameters do not exceed
128 bytes in size. The
location for these
parameters is determined
by setting this ENV
pointer. If you have used
the exact same space for
your own program
information or
commands, they will be
overwritten and lost.
A
A-7