Motorola MPC564EVB Manuel d'utilisateur télécharger pdf (Page 78)

3-28 MPC564EVB User’s Manual

Commands

MM Memory Modify

Usage: MM<width> addr <data>

The MM command modifies memory at the address addr. The value for addr may be an absolute

address specified as a hexadecimal value, or a symbol name. Width specifies the size of the data

that is modified. If no <width> is specified, the default of word sized data is used. The value for

data may be a symbol name, or a number converted according to the user-defined radix, normally

hexadecimal.

If a value for data is provided, then the MM command immediately sets the contents of addr to data.

If no value for data is provided, then the MM command enters into a loop. The loop obtains a value

for data, sets the contents of the current address to data, increments the address according to the

data size, and repeats. The loop terminates when an invalid entry for the data value is entered, i.e.,

a period.

This command first aligns the starting address for the data access size, and then increments the

address accordingly during the operation. Thus, for the duration of the operation, this command

performs properly-aligned memory accesses.

Examples:

To set the byte at location 0xFFF1_0000 to be 0xFF, the command is:

mm.b FFF10000 FF

To interactively modify memory beginning at 0xFFF1_0000, the command is:

mm FFF10000

Frees

cale Semiconductor,

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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Motorola MPC564EVB Manuel d'utilisateur Page 78