Motorola MVME166D2, MVME166IG/D2 manual Nvram

Set Environment to Bug/Operating System

Table A-1. ENV Command Parameters (Continued)

ENV Parameter and Options	Default	Meaning of Default
Network Autoboot Configuration Parameters Pointer	00000000	This is the address where the
(NVRAM)		network interface configuration
		parameters are to be
		saved/retained in NVRAM;
		these parameters are the
		necessary parameters to perform
		an unattended network boot.
Memory Search Starting Address	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-166
		environment, each MVME166
		board could be set to start its
		work page at a unique address
		to allow multiple debuggers to
		operate simultaneously.
Memory Search Ending Address	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 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 MVME166. Default
		Memory Search Ending Address
		is the calculated size of local
		memory.
Memory Search Increment Size	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.

A

MVME166IG/D2 A-5