Path: news.weeg.uiowa.edu!news.uiowa.edu!hobbes.physics.uiowa.edu!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!usenet.ins.cwru.edu!agate!ginkgo.CS.Berkeley.EDU!phelps
From: phelps@ginkgo.CS.Berkeley.EDU (Tom Phelps)
Newsgroups: comp.sys.apple2
Subject: Re: Infocom games and infosnarf
Date: 5 Oct 1992 23:35:47 GMT
Organization: University of California, Berkeley
Lines: 76
Distribution: world
Message-ID: <1aqjgjINN4lq@agate.berkeley.edu>
References: <1992Oct5.005825.12477@cs.aukuni.ac.nz>
NNTP-Posting-Host: ginkgo.cs.berkeley.edu
Keywords: Infocom, infosnarf

In article <1992Oct5.005825.12477@cs.aukuni.ac.nz>, robert-s@cs.aukuni.ac.nz (Robert Sheehan ) writes:
|> I am having difficulty converting my Infocom games into ProDOS format using
|> Infosnarf.  No matter what I try (with several different games) I get a
|> ProDOS error #40C.  I expect the "C" is a mistake and it should just be
|> #40, a pathname error.  This happens after the game disk has been accessed
|> and the length has been written to the screen.  The disk to save the ProDOS
|> version on is accessed and then I get the error.
|> 
|> Any help appreciated.
|> Robert.
|> -- 
|> ------- Robert Sheehan ---- robert-s@cs.aukuni.ac.nz -------------------------

The "C" is an abbreviation for what ProDOS command caused the error,
in the case create.  You didn't give much information about your
setup, but my guess is that you're falling victim to a problem
Dave Chiu fixed over a month ago, a problem which I never experienced on
my IIgs.  Below I've reposted his article.

-Tom

------------

Article: 41890 of comp.sys.apple2
Path: agate!ucsee.Berkeley.EDU!chiu
From: chiu@ucsee.berkeley.edu
Newsgroups: comp.sys.apple2
Subject: Infocom_Pro patch
Date: 20 Aug 1992 09:15:06 GMT
Organization: University of California Society of Electrical Engineers (UCSEE)
Lines: 35
Distribution: world
Message-ID: <16vnqqINN3pn@agate.berkeley.edu>
References: <1992Aug19.122046.15716@ll.mit.edu> <16vkaeINN3e7@agate.berkeley.edu>
Reply-To: chiu@ucsee.Berkeley.EDU
NNTP-Posting-Host: ucsee.berkeley.edu
Summary: Infosnarf does not work properly with clock card
Keywords: Infocom_Pro, Infosnarf
Originator: chiu@ucsee.Berkeley.EDU

Because infosnarf uses $200 (input buffer area) for storing file name,
people using Thunder Clock/Compatible slot cards may experience trouble
with infosnarf (most likely be ProDOS Error #40C or #40O) since ProDOS 8
uses $200-$210 as scratch pad for its clock driver. Apple //GS owners
need not worry since ProDOS 8 handles //GS internal clock differently
from Thunder Clock/Compatibles.

I've devised the following patch to get around the problem by changing
several lines of code in Infosnarf. If you do not have clock card in
your Apple // (//GS owners need now worry since ProDOS 8 handles //GS
internal clock differently) you will not need this patch.

Like the Infocom_Pro, this patch is supplied as-is so use it at your own
risk.

From BASIC.SYSTEM set the prefix to appropriate volume/subdirectory where
infosnarf is kept, then enter the following (ignoring comments enclosed
in '/* ... */')

]BLOAD INFOSNARF
]CALL-151

*0B23:9D 00 1E		/* This patches the 'get_path' code to store */
*0B2A:8E 00 1E		/* file name starting $1E00 instead of $0200 */

*0BD0:00 1E		/* This patches the destroy, create, and open */
*0BD3:00 1E		/* MLI parameter tables			      */
*0BDF:00 1E

*BSAVE INFOSNARF,A$800,L1029

After this patch infosnarf should work on Apple //s with ThunderClock or
Compatible clock cards. 

-Dave C.