Operation Fundamentals
System Initialization
MMDS0508OM/D
MOTOROLA
Operation Fundamentals
65
Initializing Memory
Data
The block fill (BF) command allows placement of numeric values in a
block of memory addresses. This command defines a block of memory,
then places a byte or word pattern throughout the range.
The memory modify (MM) command lets the user interactively examine
and modify contents of memory locations. If any data arguments are
entered with this command, the system stores the values beginning at
the specified address.
When only an address is supplied, the command displays the contents
of the address followed by a prompt. Enter the value and press <CR>.
The command displays the next address and its contents. The command
continues to store the values entered until a period (.) is entered.
Both the BF and MM writes to memory are verified; a "write did not verify"
message is displayed if the write could not be verified. Note that this
message may be acceptable in some situations, such as writing to
registers that have write-only bits.
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Freescale Semiconductor, Inc.
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