Applies only to X25 lines. Dumps the microcode of the specified
 KMS-11/KMV-11 device to the indicated file. By default, the output
 file takes the format:

  SYS$SYSROOT:[SYSERR]file-id.DMP

 The KMS/KMV Dump analyzer (PSIKDA) is the utility program used to
 process the dump file created by the MICROCODE DUMP parameter.