System Debug Reference Manual (32650-90888)

200 Chapter6
System Debug Command Specifications M-X
M (modify)
DAT only
The following DAT commands cannot be used in Debug:
CLOSEDUMP Closes a dump file
DEBUG Enters Debug; used to debug DAT
DPIB Displays a portion of the Process Information Block
DPTREE Displays the process tree
DUMPINFO Displays dump file information
GETDUMP Reads in a dump tape to create a dump file
OPENDUMP Opens a dump file
PURGEDUMP Purges a dump file
M (modify)
Debug only
Privileged Mode: MA, MD, MCS, MZ, MSEC
Modifies the contents of the specified number of words at the specified address.
Syntax
MA offset [ count ] [ base ] [ newvalue(s) ] ABS relative
MD
dst.off [ count ] [ base ] [ newvalue(s) ] Data segment
MDB
offset [ count ] [ base ] [ newvalue(s) ] DB relative
MS
offset [ count ] [ base ] [ newvalue(s) ] S relative
MQ
offset [ count ] [ base ] [ newvalue(s) ] Q relative
MC
logaddr [ count ][ base ][ newvalue(s) ] Program file (default)
MCG
logaddr [ count ] [ base ] [ newvalue(s) ] Group library
MCP
logaddr [ count ] [ base ] [ newvalue(s) ] Account library
MCLG
logaddr [ count ] [ base ] [ newvalue(s) ] Logon group
MCLP
logaddr [ count ] [ base ] [ newvalue(s) ] Logon account
MCS
logaddr [ count ] [ base ] [ newvalue(s) ] System library
MCU
fname logaddr [ count ] [ base ] [ newvalue(s) ] User library
MCA
cmabsadd r [ count ] [ base ] [ newvalue(s) ] Absolute CST
MCAX
cmabsaddr [ count ] [ base ] [ newvalue(s) ] Absolute CSTX
MV
virtaddr [ count ] [ base ] [ newvalue(s) ] Virtual
MZ
realaddr [ count ] [ base ] [ newvalue(s) ] Real memory
MSEC
ldev.off [ count ] [ base ] [ newvalue(s) ] Secondary store
By default, the current value is displayed. The ENV variable QUIET_MODIFY can be used to
suppress the display of the current value.