MPE/iX System Utilities Reference Manual (32650-90908)

Chapter 18
PAT CH
Operation
156
Parameters
The MG command displays the contents of the current stack word, followed by a comma. To leave the value
unchanged, you must re-enter the contents! If you press
RETURN without entering anything the word will be
filled with zeros.
For information regarding the offsets of instructions and global variables in program files, refer to compiler
options for the programming language in which the code was written.
Examples
Here is an example of using the MG and DG command. Begin by running PATCH and entering the executable file
name. In this example, the file is BIGTECH.PUB.SYS.
PROGRAM PATCH G.00.00 (C) HEWLETT-PACKARD CO., 1976
FILE =?BIGTECH.PUB.SYS
The following displays values in the first five addresses:
?DG, 0,5
000112
000052
000064
000264
000464
The following would set the first five locations to zero because
RETURN is pressed without entering anything
after each location is displayed:
?MG, 0,5
000112,
000052,
000064,
000264,
000464,
The following displays the changes you just made:
?DG ,0,5
000000
000000
000000
000000
000000
reloffset The DB-relative offset of the word to modify, found in your compiler listing.
numwords The number of words, in octal, that you wish to modify. The default is one.