Thanks, Martin. The existing code that has worked for years and years looked like this.
IF R8,(K,ALR),R8 MVI 0(R9),C'1' ENDIF That generated assembled code that looked like this. 787 ALR R8,R8 788 BNK ELSE0017 789+ BC 12,ELSE0017 branch on no carry So, you're correct that it appears to be a macro -- but I can't find any such macro on my system. For fun, I also tried the positive condition and it generated assembled code that looked like this. 787 ALR R8,R8 788 BK ELSE0017 789+ BC 3,ELSE0017 branch on carry Can't find that macro, either. Now what? ;-) Sincerely, Dave Clark -- int.ext: 91078 direct: (937) 531-6378 home: (937) 751-3300 Winsupply Group Services 3110 Kettering Boulevard Dayton, Ohio 45439 USA (937) 294-5331 On Fri, May 24, 2024 at 11:34 AM Martin Trübner < 00001237eee49f7e-dmarc-requ...@listserv.uga.edu> wrote: > Dave, > > > BK never existed- could this be an inhouse macro? > > > What is the condition that is in the corresponding 47instruction? > > > or- how would you code the nn in this: BC nn,label > > > Martin > > On 24.05.24 17:16, David Clark wrote: > > Some time back I changed my logical construct macro sets to use > > the relative forms of branching. That has been working fine as I > > reassemble things. But today I came across one that failed to resolve > > successfully--but I can't find anything about it in the manuals I have. > It > > was a branch on carry (BK) mnemonic and, apparently, JK is not recognized > > as such. I presume this is one of the exceptions to simply replacing B > > with J? Help?!? ;-) > > > > Sincerely, > > > > Dave Clark > > -- > > int.ext: 91078 > > direct: (937) 531-6378 > > home: (937) 751-3300 > > > > Winsupply Group Services > > 3110 Kettering Boulevard > > Dayton, Ohio 45439 USA > > (937) 294-5331 >