On Monday, December 2, 2019, 02:56:13 PM PST, Paul Gilmartin <00000014e0e4a59b-dmarc-requ...@listserv.uga.edu> wrote: > In the source? Branch around them or use LOCTR? What difference
> does it make as long as instructions plus data do not exceed 4Ki? For programs that don't use a base register for the code, good coding practices requires LOCTR be used to place constants at the beginning of your program (with branch around). As long as constants never exceed 4KB, the program won't need to be reworked to free a register. > dissension about whether control block definitions should > precede or follow instructions. > And the former group was biased by experience with languages > which required symbols defined before reference. CB location in the source is not always cosmetic because of the macro language. I've worked on a product that will not assemble with the CB's at the end of source. The cosmetic problem of placing CB's at the beginning is no longer a problem because ISPF and SDSF editor allows lines to be hidden. Just write an edit macro to hide CB definitions. Jon.
