Aucbvax.1543 fa.unix-wizards utzoo!duke!mhtsa!ucbvax!DYER@HARV-10 Sat Jun 6 09:27:33 1981 405 exec's 405 exec's have been around a while at Harvard, but only recently have been anything more than a curiosity. The maintainer of PPL, a large interpretive teaching language running on our 11/70's, finally ran out of I-space to implement a number of new features. He used 405 exec's to implement little-used functions, exec'ing back to the main 411 when they were finished. Getting the Harvard MACRO-11 LINKR to produce such a file was a bit of a mess. Basically, one had to hand-assign the needed addresses (based on the 411 file) and adb a 405 in the front. Usually, several "nm ... vi ... macro ... linkr" iterations were necessary. However, because these functions looked at only a small part of the available data space, the job wasn't too laborious. So it works, if you take the time. Steve ----------------------------------------------------------------- gopher://quux.org/ conversion by John Goerzen of http://communication.ucsd.edu/A-News/ This Usenet Oldnews Archive article may be copied and distributed freely, provided: 1. There is no money collected for the text(s) of the articles. 2. The following notice remains appended to each copy: The Usenet Oldnews Archive: Compilation Copyright (C) 1981, 1996 Bruce Jones, Henry Spencer, David Wiseman.