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From: peter@dbaccess.com (Peter A. Castro)
Newsgroups: comp.lang.asm370
Subject: Re: VMCF and IUCV
Message-ID: <118@tardis.dbaccess.com>
Date: 10 Sep 90 19:48:06 GMT
References: <9009090912.AA17846@ucbvax.Berkeley.EDU>
Distribution: inet
Organization: DB/Access Inc., Santa Clara, CA
Lines: 26

in article <9009090912.AA17846@ucbvax.Berkeley.EDU>, KXH105@PSUVM.BITNET ("Ken Hornstein  862-7007", 814) says:
> 
> Is it possible to have both an IUCV routine and a VMCF routine active at the
> same time?  My VMCF interrupt handler works fine, but when the IUCV handler
> tries to do anything, evil things happen.  Is there something special I should
> do in my VMCF routine to allow for IUCV interrupts, or am I wasting my time?
    As I recall, IUCV is the improved version of VMCF, where VMCF has
    all the SVC functions for Inter-Machine communication, but needs direct
    coding by the programmer.  IUCV, on the other hand, has support for Cross-
    Machine support, being able to send/receive messages between connected
    machines.  I also remember that both use the same Virtual Machine message
    operations and tend to conflict with each other, because each requires
    different interrupt parameters which the Virtual Machine uses to invoke
    the interrupt routine.  I might suggest that you switch to IUCV, being it
    is more used by 370 applications for message communication, and in
    addition, can receive/send messages to other machines.
> 
> ---
> If at first you don't succeed - so much for skydiving.
> 
> Ken Hornstein       kxh105@psuvm.psu.edu      Phone: 814/862-7007
-- 
Peter A. Castro                   INTERNET: peter@dbaccess.com        // //|
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