In a message dated 7/18/2005 7:57:25 A.M. Central Daylight Time, [EMAIL PROTECTED] writes:
Except for the problem I mentioned earlier that a literal can be referenced by more than one instruction. I prefer to always use immediate instructions when possible. A named halfword can also be referenced by more than one instruction just as easily as a literal can. I discussed in another post the necessity for doing some homework before applying such a zap; namely research the possibility that whatever you are going to zap is referenced somewhere else that is not involved in the instruction whose logic needs to be altered. In any case, all of the instructions under discussion are four bytes long, which means you can convert them to BAS/BRAS into the patch area if you need to do something more exotic/difficult than what a zap to the instruction allows. This is another example of research that could be done before creating a zap. There is obviously a lot more involved in zapping code than point and shoot. Bill Fairchild ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
