Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site im4u.UUCP Path: utzoo!linus!philabs!cmcl2!seismo!ut-sally!im4u!bradley From: bradley@im4u.UUCP Newsgroups: net.columbia Subject: Re: Old fashion computing practices @ NASA Message-ID: <417@im4u.UUCP> Date: Wed, 14-Aug-85 23:07:15 EDT Article-I.D.: im4u.417 Posted: Wed Aug 14 23:07:15 1985 Date-Received: Mon, 19-Aug-85 04:45:25 EDT References: <1079@cbdkc1.UUCP> <46@escher.UUCP> <239@pyramid.UUCP> Reply-To: bradley@im4u.UUCP (David K. Bradley) Organization: U. Texas CS Dept., Austin, Texas Lines: 29 Keywords: shuttle Intermetrics HAL >> Although, the shuttle software was written by IBM >>people under contract, so they probably used a mish-mash of >>PL-1 and ForTran. > >I thought the shuttle software was done by Intermetrics...? Or did they just do >the compilers? In general, how can one find out more about computing on the >shuttle? >-- The space shuttle was the subject of a special case study published in the Communications of the ACM sometime within the past year or two. I'm not sure of the exact issue. The article described the computers and software used onboard the shuttle and in the development/testing areas. Although the software is developed and maintained by IBM, I seem to recall that there is also a NASA team that writes "equivalent" programs which are used to verify the ones from IBM. The software is not in PL-1 or Fortran, but in a language called HAL(?). According to the article the language is not named after the computer in 2001, but after the person who developed it. It's been a while since I read the article so this some of this might be off a little bit. -- David K. Bradley ------------------------------------------------------------------------------- Computer Science Department, The University of Texas at Austin bradley@ut-sally.UUCP {ihnp4,harvard,gatech,ctvax,seismo}!ut-sally!bradley -------------------------------------------------------------------------------