Motorola M68EVB912B32, User Manual

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OPERATION
68EVB912B32UM/D 3-38
MMW Memory Modify, Word MMW
syntax:
MMW <Address> [<Data>]
where:
<Address> is a 16-bit hexadecimal number.
<Data> is an optional 16-bit hexadecimal number.
The Memory Modify Word command allows the contents of memory to be examined and/or
modified as 16-bit hexadecimal data. If the 16-bit data parameter is present on the command
line, the word at memory location <Address> is replaced with <Data> and the command is
terminated. If not, D-Bug12 enters the interactive memory modify mode. In the interactive
mode, each word is displayed on a separate line following the data’s address. Once the memory
modify command has been entered, single-character sub-commands are used for the modification
and verification of memory contents. These sub-commands have the following format:
[<Data>] <CR> Optionally update current location and display the next location.
[<Data>] </> or <=> Optionally update current location and redisplay the current
location.
[<Data>] <^> or <-> Optionally update current location and display the previous
location.
[<Data>] <.> Optionally update current location and exit Memory Modify.
With the exception of the carriage return, the sub-command must be separated from any entered
data with at least one space character. If an invalid sub-command character is entered, an
appropriate error message is issued and the contents of the current memory location are
redisplayed.
restrictions:
While there are no restrictions on the use of the MMW command, caution should be used when
modifying target memory while user code is running. Accidentally modifying target memory
containing program code could lead to program runaway.