Motorola MPC564EVB Manuel d'utilisateur télécharger pdf (Page 63)

Chapter 3. Using the Monitor/Debug Firmware 3-13

Commands

BS Block Search

Usage: BS<width> begin end data

The BS command searches a contiguous block of memory starting at address begin, stopping at

address end, for the value data. <Width> modifies the size of the data that is compared during the

search. If no <width> is specified, the default of word sized data is used.

The values for addresses begin and end may be absolute addresses specified as hexadecimal values,

or symbol names. The value for data may be a symbol name or a number converted according to

the user-defined radix, normally hexadecimal.

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 search for the 32-bit value 0x1234_5678 in the memory block starting at 0xFFF4_0000 and

ending at 0xFFF7_0000:

bs FFF40000 FFF70000 12345678

This reads the 32-bit word located at 0x0004_0000 and compares it against the 32-bit value

0x1234_5678. If no match is found, then the address is incremented to 0x0004_0002 and the next

32-bit value is read and compared.

To search for the 16-bit value 0x1234 in the memory block starting at 0xFFF4_0000 and ending at

0xFFF7_0000:

bs 40000 FFF70000 1234

This reads the 32-bit word located at 0xFFF4_0000 and compares it against the 16-bit value

0x0000_1234. If no match is found, then the address is incremented to 0xFFF4_0004 and the next

32-bit value is read and compared.

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 63