Aucbvax.2269 fa.unix-wizards utzoo!duke!decvax!ucbvax!Mike@BRL Mon Jul 13 14:07:51 1981 Re: More ENABLE/34 Info... From: Mike at BRL The ENABLE implements a UNIBUS Map, just like the 11/70. UNIX has the routines mapalloc() and mapfree() which manage the map -- this mapping is for NPR I/O only, and operates independently of the Kernel/User address maps. Ie: UNIX can pretend that the machine is an 11/70 -- except that some of the registers are at different places, and a few extra lines of assembler are needed in the machine assist startoff section. Really most convienient. -M ----------------------------------------------------------------- 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.