| mcmp | ||
|---|---|---|
 | 235.2. Common Commands |  |
Name
mcmp — Compare two segments of memory
Synopsis
mcmp {-s location1} {-d location1} {-l length} [[-1] | [-2] | [-4]]
Arguments
| 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 |
Description
Compares the contents of two ranges of memory (RAM, ROM, FLASH, etc).
Examples
Compare two buffers which match (result is quiet).
RedBoot>mfill -b 0x100000 -l 0x20 -p 0xDEADFACERedBoot>mfill -b 0x200000 -l 0x20 -p 0xDEADFACERedBoot>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| |  | |
| load |  | mcopy |
| 2025-10-02 | eCosPro Non-Commercial Public License |