jbn@wdl1.UUCP (01/16/85)
1. Has anyone ever implemented an emulator which allows VMS programs to run
under UNIX? (VMS programs under UNIX, not UNIX programs under VMS).
2. Have the DEC VMS Fortran or Ada compilers ever been brought up under
UNIX?
John Naglepritch@osu-eddie.UUCP (Norman Pritchett) (01/20/85)
> > 1. Has anyone ever implemented an emulator which allows VMS programs to run > under UNIX? (VMS programs under UNIX, not UNIX programs under VMS). > > 2. Have the DEC VMS Fortran or Ada compilers ever been brought up under > UNIX? > Has anyone ever implemented an emulator which allows VM 370 programs to run under unix? :-) :-) :-) -- ---------------------------------------------------------------------- Norm Pritchett - The Generic Hacker UUCP: ...!cbosgd!osu-eddie!pritch BITNET: TS0017@OHSTVMA
donn@utah-cs.UUCP (Donn Seeley) (01/21/85)
From John Nagle <jbn@wdl1.UUCP>: 1. Has anyone ever implemented an emulator which allows VMS programs to run under UNIX? (VMS programs under UNIX, not UNIX programs under VMS). 2. Have the DEC VMS Fortran or Ada compilers ever been brought up under UNIX? Back when I was working at UCSD Chemistry, Jim McGinness (hi, Jim!) had an idea that would let us get the VMS Fortran compiler and run it under 4.1 BSD. We would build an object-module converter -- any code with a symbol table could be run through this and it would take appropriate measures to map VMS system services into a compatibility library on Unix. This scheme would be very general: any program that didn't require absurdly VMSoid services could be ported. (Imagine -- DCL, SOS, etc. all at your fingertips! Just kidding, folks.) We asked DEC about it and they thought about it for a long time and eventually said, 'No way.' Eunice yes, VNX yes, Vmice no. Now that Jim McGinness is working for DEC, and DEC is in the Unix business, I understand they've had second thoughts, at least about running VMS compilers under Ultrix. I don't know what the prospects are at the moment, but I suspect if you asked the people involved with Ultrix language support, the answer would be, 'Don't hold your breath.' If you run across DECcies at Usenix, pester them on this issue and you may get better answers or at least see some more action. I'd settle for the VMS math library myself, Donn Seeley University of Utah CS Dept donn@utah-cs.arpa 40 46' 6"N 111 50' 34"W (801) 581-5668 decvax!utah-cs!donn
Doug Gwyn (VLD/VMB) <gwyn@Brl-Vld.ARPA> (01/21/85)
If you look at how VMS is accessed by programs running under it, you will discover that it is MUCH more difficult to emulate VMS under UNIX than the other way around. There also does not seem to be a lot of interest in emulating VMS; what does that get you that a UNIX-on-VMS wouldn't?