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Table D-1. ENV Command Parameters (Continued)
ENV Parameter and Options
Memory Search Starting Address
Memory Search Ending Address
Memory Search Increment Size
Memory Search Delay Enable
[Y/N]
Set Environment to Bug/Operating System
Default
Meaning of Default
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-MVME177
environment, each MVME177 board
could be set to start its work page at a
unique address to allow multiple
debuggers to operate simultaneously.
02000000 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
speciÞed 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 MVME177. 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:
Þrst CPU $0 (0 x $10000), second CPU
$10000 (1 x $10000), etc.
N
There will be no delay before the Bug
begins its search for a work page.
D
D-9
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