f range list
The f command fills the addresses in a specified range with the values in the specified list.
range
Specifies the block of memory to be filled. If range contains more bytes than the number of values in list, the debugger uses list repeatedly until all bytes in range are filled. If any of the memory in range is not valid (bad or nonexistent), an error occurs in all succeeding locations.
list
Specifies the list of values to fill the given range. If list contains more values than the number of bytes in range, the debugger ignores the extra values in list.
The following example fills memory locations 04BA:100 through 04BA:1FF with the bytes specified, repeating the five values until it has filled all 100h bytes:
f04BA:100 L 100 42 45 52 54 41