From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.5-pre1 (2020-06-20) on ip-172-31-74-118.ec2.internal X-Spam-Level: X-Spam-Status: No, score=0.5 required=3.0 tests=BAYES_05,TO_NO_BRKTS_PCNT autolearn=no autolearn_force=no version=3.4.5-pre1 Date: 7 Apr 93 18:14:44 GMT From: prism!jm59@gatech.edu (MILLS,JOHN M.) Subject: Re: TAC-3 to VME Box Interface Message-ID: <91828@hydra.gatech.EDU> List-Id: In article <9304061817.AA03651@srs21g.scf.loral.com> mkm%srs21g@SCF28.SCF.LORAL .COM (Mike K. McNair) writes: >To Anyone Who Can Help, > >We will be developing a system which has basically two boxes, a TAC-3 (which >is essentially an HP workstation) and a VME card cage, connected by an Ethern et. >Any ideas on which compiler/run-time vendors support Inter-Process, Inter-Ada >Task and/or Inter-Processor communications for this configuration? By the way , >we will be using Motorola 680x0-based processor boards in the VME box. We are integrating three motorola 68030 boards with a number of standard and custom peripherals in a single VME chassis. This box also communicates by serial i/o with a second VME chassis using Radstone 60820-based cards. We use the SD-Scicon XD-Ada compiler run in a VAX/VMS environment. We use the XD-Ada message-passing mechanism between tasks on the same and different processors. We debug using ethernet and the resident monitors on the MVME processors. Very happy with all these. I understand there is a UNIX-based version of this compiler, but I don't know if it's available for the HP host. We may be pushing the limits of the message-passing utility; we're implicitly invoking several activities through 'timed receive' and 'pend on message' dependencies, and have sometimes observed problems synchronizing startup on our three processors. I think this is due to the way our tasks were written, and not necessarily to the message-passing mechanism. We only use ethernet for monitor debugging, so I can't speak to it's use in interprocessor task communications. Don't know if this is close enough to your environment to be any help. Regards --jmm-- -- John M. Mills, SRE; Georgia Tech/GTRI/TSDL, Atlanta, GA 30332 uucp: ...!{decvax,hplabs,ncar,purdue,rutgers}!gatech!prism!jm59 Internet: john.m.mills@gtri.gatech.edu EBENE Chocolat Noir 72% de Cacao - WEISS - 42000 St.Etienne - very fine