Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!pasteur!ucbvax!CBEBDA3T.BITNET!U06A
From: U06A@CBEBDA3T.BITNET (Stefan Friedli)
Newsgroups: comp.sys.transputer
Subject: How to send a variant protocol over a link?
Message-ID: <8803171831.AA04508@tcgould.TN.CORNELL.EDU>
Date: 17 Mar 88 13:08:00 GMT
Sender: uucp@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 19


I hope someone can help with the following problem:

For a program I currently develop, it would be a nice and elegant
way to have a variant protocol on a physical link. As this is
not supported by the configuring language (only CHAN OF ANY is
allowed for links), I looked for (and found) a solution: declare
the links as CHAN OF ANY, pass it as an actual parameter to some
procedure that has as the corresponding formal parameter a channel
of a variant protocol.

Problem: This works fine (and does what it's supposed to do!!!)...
on the compiler in d700C. The new compiler in d700D rejects this
way of parameter passing and according to a note of INMOS (Writing
occam programs to minimise future changes, June 24, 1987, paragraph
2: Protocols), this restriction will be kept in future releases.

Anyone out there to help?

Thanks. Stef.