Motorola MVME162P2 Series Installation And Use Manual page 74

162Bug Firmware
ENV Parameter and Options
Memory Search Ending Address
3
Memory Search Increment Size
Memory Search Delay Enable
[Y/N]
Memory Search Delay Address
Memory Size Enable [Y/N]
Memory Size Starting Address
3-14
Table 3-3. ENV Command Parameters (Continued)
Default
00100000
00010000
FFFFD20F Default address is $FFFFD20F. This is the
00000000
Meaning of Default
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
MVME162P2. Default Memory Search Ending
Address is the calculated size of local memory.
Multi-CPU feature 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.
N No delay before the Bug begins its search for a
work page.
MVME162P2 GCSR GPCSR0 as accessed
through VMEbus A16 space; it assumes the
MVME162P2 GRPAD (group address) and
BDAD (board address within group) switches
are set to "on". This byte-wide value is
initialized to $FF by MVME162P2 hardware
after a System or Power-On reset. In a multi-
162P2 environment, where the work pages of
several Bugs reside in the memory of the
primary (first) MVME162P2, the non-primary
CPUs will wait for the data at the Memory
Search Delay Address to be set to $00, $01, or
$02 (refer to the Memory Requirements section
in Chapter 3 for the definition of these values)
before attempting to locate their work page in
the memory of the primary CPU.
Y Memory is sized for Self-Test diagnostics.
Default Starting Address is $0.
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