Freescale Semiconductor Motorola MMDS0508 Operation Manual page 144

Command-Line Commands
MM
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Memory Modify
The MM command lets the user interactively examine and modify
contents of memory locations. Writes to memory are verified and a "write
did not verify" 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.
If any data arguments are entered with this command, the system stores
the values, beginning at the specified address. This command does not
alter the contents of CPU registers such as the program counter (PC).
Syntax:
MM < address > [< data >] [< data >]
Where:
< address > The address of a memory location to be
modified
< data > The value(s) to be stored at the < address >
location. If more than one data byte is
supplied, the two data bytes are stored in
consecutive memory locations starting at the
address argument.
If < data > is not supplied, the command flow will display the current
contents of the specified address and an entry prompt for data. The
syntax for entry at the MM data prompt is:
[< data> ][ <terminator >]
Command-Line Commands
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MM
MMDS0508OM/D
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