On Tue, 11 Aug 2015 08:46:39 -0400, Peter Relson wrote: >If that is then used with LLGF this will be a branch to an odd address and >a specification exception will result.
You lost me with that one Peter. Given all of these conditions: 1. A program stores the low half of R0 as returned from LOAD 2. The high half of R0 returned from LOAD is 0 3. R15 is loaded from the saved R0 with LLGF 4. The program issued BASSM R14,R15 Everything will work correctly. Of course, if the program uses BASR rather than BASSM, a specification exception will result. I would say that the correct sequence should be: LOAD modulename STG R0,moduleaddreess LG R15,moduleaddress BASSM R14,R15 where moduleaddress DS FD or moduleaddress DS AD Of course, if you don't need to keep the module address around because you will only call it once, the STG/LG can be replaced with LGR R15,R0 -- Tom Marchant
