RedBoot User's Guide
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mcmp

Name

mcmp -- Compare two segments of memory

mcmp {-s location1} {-d location1} {-l length} [-1 | -2 | -4]

Name	Type	Description	Default
-s `location1`	Memory address	Location for start of data.	none
-d `location2`	Memory address	Location for start of data.	none
-l `length`	Number	Length of data	none
-1		Access one byte (8 bits) at a time. Only the least significant 8 bits of the pattern will be used.	-4
-2		Access two bytes (16 bits) at a time. Only the least significant 16 bits of the pattern will be used.	-4
-4		Access one word (32 bits) at a time.	-4

Compares the contents of two ranges of memory (RAM, ROM, FLASH, etc).

Compare two buffers which match (result is quiet).

 
RedBoot> mfill -b 0x100000 -l 0x20 -p 0xDEADFACE
RedBoot> mfill -b 0x200000 -l 0x20 -p 0xDEADFACE
RedBoot> mcmp -s 0x100000 -d 0x200000 -l 0x20

Compare two buffers which don't match. Only the first non-matching element is displayed.

 
RedBoot> mcmp -s 0x100000 -d 0x200000 -l 0x30 -2
Buffers don't match - 0x00100020=0x6000, 0x00200020=0x0000

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