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1994-08-27
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From: walra%moacs11@nl.net (Waldi Ravens)
Subject: Re: Online Help
Date: Mon, 18 Jul 1994 16:33:28 +0100
Precedence: bulk
Ofir Gal in <memo.680064@cix.compulink.co.uk>:
>> The AV protocol assumes that processes have access to memory locations
>> that belong to other processes. This might become a problem under future
>> versions of MiNT.
> I _think_ you can get around this by using Mxalloc().
Michel Forget in <2e298458fd9ca@elfhaven.ersys.edmonton.ab.ca>:
> Memory Protection is currently a problem for the AV-Protocol.
> You need to use Mxalloc() to allocate space for the string you want to
> send, copy the string to the new (unprotected) memory, and then pass
> that address. It is a little round-about, but what can you do?
Yes, that is true for _current_ versions of MiNT. I was thinking of
_future_ versions which will support virtual memory. For example:
Process A does a Pfork(), creating process B. The datasegments of both
processes are now located at the same virtual (not physical) adresses.
Process A sends a VA_START message to B, passing a pointer to a string.
Process B will not be able to access that string.
Warwick Allison in <9407172252.AA19614@uqcspe.cs.uq.oz.au>:
> So what happens if Holger decides to stop producing ST-Guide?
You develop your own help-viewer. Your implementation would off course
be freeware with sources available :-). There is a difference between
making the ST-guide application a standard and making the ST-guide
hypertext format a standard. The former doesn't make any sense, the
latter does.
Warwick Allison in <9407172245.AA19463@uqcspe.cs.uq.oz.au>:
> I think his ignores the fact that some people produce FREE software that
> they would also like to have follow the standard. I wouldn't like my free
> programs to become a vehicle for funding someone else's income.
I don't think there is a free (including sources) online helpsystem
available? Assuming that you have no principal objections against _some_
online helpsystem being part of the GUI standard, there's two choices:
1. A hypertext format that is completely new to the Atari platform.
Even if that format is already in use on other platforms someone
would still have to produce a viewer for the Atari platform, and
hopefully make it available to others.
2. A hypertext format that is already supported on the Atari platform.
ST-guide's format has some clear advantages over the 1st-guide and
the Pure C/Pure Pascal formats. No-one would stop you from writing
your own viewer and distributing it under your terms.
Hmm, having said that I must admit that in case (2) you would also have
to rewrite the hypertext compiler. I still think it is preferrable to
choose a format that is already widely supported, but I'm open to any
reasonable alternatives.
Regards,
Waldi (walra%moacs11@nl.net)