Tom Conley of the IBM Mainframe Discussion List <[email protected]>
wrote on 02/24/2010 10:21:07 AM:
> I have a need to zap core, but my client does not have OMEGAMON. I
searched
> the CBT mods tape and came up empty. What we're trying to do is a
SETPROG
> LPA,ADD, but of course, there's a vector table that needs to be updated
with
> the address of the new module. This is not an SVC, so my only recourse
to
> install this without an IPL is to zap core. Are there any freeware tools
> out there for zapping core?
MXI can zap up to 8-bytes of common storage in batch mode.
Regards,
John K
Function
Alters up to eight bytes of common storage. This command can only be
executed in BATCH.
Command Syntax
ZAP address VER(hex) REP(hex)
Keywords
address The address of the data that you wish to change. This
address
must reside within one of the following storage locations :
CSA
SQA
R/W Nucleus
Extended CSA
Extended SQA
Extended R/W Nucleus
VER(hex) The existing hexadecimal contents at the specified address.
REP(hex) The hexadecimal contents that are to be be used to replace
the
contents specified in VER().
Considerations
1. Use this command with utmost care. Incorrect or mistaken use will most
likely cause a complete system outage.
2. The VER() keyword is always required.
3. The length of hexadecimal characters on the VER() and REP() keywords
must
be equal.
4. By default MXI will issue a WTOR asking for confirmation of the
storage
alteration. The operator must reply with a 'Y' before the storage
contents are changed.
5. By default MXI is shipped with the all users denied access to the ZAP
command and specific install actions are required to activate it.
Example
//ZAP EXEC PGM=MXI,PARM=BATCH
//STEPLIB DD DISP=SHR,DSN=your.apf.loadlib
//SYSPRINT DD SYSOUT=*
//SYSIN DD *
ZAP FDEF0 VER(00000000) REP(00000001)
/*
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