Thanks every body for clues. Some answers
1) Both assembler and cobol are sub-programs. They were called directly from a main program builded in cobol to test. This main programa does measure of CPU before and after calling. 2) I have made a revision of assembler generated by cobol but there are a lot of LE modules involved. Difficult to translate into my assembler. 3) I will make a revisión about "G" instrucciones, but I have yet used them because I have needed 128 real bits operations. At the end, it is not a so important question. Only I was surprised for that. Sincerely angel luis dominguez z/os system programmer - spain
