M5249C3 Freescale Semiconductor, M5249C3 Datasheet - Page 25

• Manufacturer Part Number: M5249C3
• Description: KIT EVAL FOR M5249 W/ETHERNET
• Manufacturer: Freescale Semiconductor
• Series: ColdFire®r
• Type: Microprocessorr

Specifications of M5249C3

• Contents: Module and Misc Hardware
• Processor To Be Evaluated: MCF5249
• Interface Type: RS-232, Ethernet
• For Use With/related Products: MCF5249
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

BF
Usage:BF<width> begin end data <inc>
The BF command fills a contiguous block of memory starting at address begin, stopping at address end,
with the value data. <Width> modifies the size of the data that is written. If no <width> is specified, the
default of word sized data is used.
The value for addresses begin and end may be an absolute address specified as a hexadecimal value, or a
symbol name. The value for data may be a symbol name, or a number converted according to the
user-defined radix, normally hexadecimal.
The optional value <inc> can be used to increment (or decrement) the data value during the fill.
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 fill a memory block starting at 0x00020000 and ending at 0x00040000 with the value 0x1234, the
command is:
To fill a block of memory starting at 0x00020000 and ending at 0x0004000 with a byte value of 0xAB, the
command is:
To zero out the BSS section of the target code (defined by the symbols bss_start and bss_end), the
command is:
To fill a block of memory starting at 0x00020000 and ending at 0x00040000 with data that increments by
2 for each <width>, the command is:
Freescale Semiconductor
bf
bf.b
bf
bf
20000 40000 1234
20000 40000 AB
bss_start bss_end 0
20000 40000 0 2
M5249C3 User’s Manual, Rev. 1
Using the Monitor/Debug Firmware
Block Fill
2-9