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

Chapter 18
PAT CH
Operation
155
When you enter the M command, the contents of the current instruction are displayed followed by a comma. To
leave the value unchanged, you must re-enter the contents! If you press
RETURN without entering anything
the instruction will be set to zeros (%000000, a NOP instruction).
For a list of segment names and their addresses within a program file use the PMAP option of the PREP
command.
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.
Example
The following example shows you how to use the M and D commands to display and modify the contents of one
instruction in the file BIGBUCS.PUB.SALES:
FILE = ? BIGBUCS.PUB.SALES
?D,0,20,1
031042
?M,0,20,1
031042, 420031
?D,0,20,1
420031
?
DG
The DG command displays the global area of the initial stack. To invoke this command enter:
?DG, reloffset [,numwords]
Parameters
Example
FILE? PINITRIN.PUB.TEST
?DG,0,4
000010
000015
000000
000046
?
MG
The MG command modifies the global area of the intial stack. To invoke this command enter:
?MG, reloffset [,numwords]
reloffset The DB-relative offset of the word to display, found in your compiler listing.
For more information, refer to the compiler options for the programming
language in which the code was written.
numwords The number of words, in octal, that you wish to display. The default is one.