---- START NEW MESSAGE --- Received: from cherry.ease.lsoft.com [209.119.0.109] by dpmail10.doteasy.com with ESMTP (SMTPD32-8.05) id AE01136A0218; Wed, 28 Jan 2004 19:29:05 -0800 Received: from PEAR.EASE.LSOFT.COM (209.119.0.19) by cherry.ease.lsoft.com (LSMTP for Digital Unix v1.1b) with SMTP id <6.00CC1E41@cherry.ease.lsoft.com>; Wed, 28 Jan 2004 22:24:35 -0500 Received: from MITVMA.MIT.EDU by MITVMA.MIT.EDU (LISTSERV-TCP/IP release 1.8e) with spool id 4247 for PICLIST@MITVMA.MIT.EDU; Wed, 28 Jan 2004 22:24:25 -0500 Received: from MITVMA (NJE origin SMTP@MITVMA) by MITVMA.MIT.EDU (LMail V1.2d/1.8d) with BSMTP id 5287; Wed, 28 Jan 2004 22:22:32 -0500 Received: from mail.3mtmp.com [141.117.25.187] by mitvma.mit.edu (IBM VM SMTP Level 430) via TCP with SMTP ; Wed, 28 Jan 2004 22:22:31 EST X-Comment: mitvma.mit.edu: Mail was sent by mail.3mtmp.com Received: from s25-15.resnet.ryerson.ca ([141.117.25.15] helo=3mtmp.com) by mail.3mtmp.com with esmtp (Exim 3.12 #1 (Debian)) id 1Am28k-0005Rt-00 for ; Wed, 28 Jan 2004 21:42:46 -0500 X-Mailer: Mozilla 4.8 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 References: <2193429B07D9914D97216EBBAA6AB8BD1A04F9@whitlam.corp.gli.com.au> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <40187D06.AE0BE2E2@3mtmp.com> Date: Wed, 28 Jan 2004 22:24:54 -0500 Reply-To: pic microcontroller discussion list Sender: pic microcontroller discussion list From: Josh Koffman Subject: Re: [PIC:] Disassemblers To: PICLIST@MITVMA.MIT.EDU Precedence: list X-RCPT-TO: Status: U X-UIDL: 371856194 Perhaps it's not only time based, but based on the type of coin received and the sequence it came in? For example, dime, quarter, penny, dime, dime, all 2 seconds apart? Or perhaps the amount put into the machine? For example, if the machine was selling $1.00 drinks, it would be unlikely anyone would have tried to put in $20.00 worth of change. I'm sure I speak for the majority of the list, but this problem has really intrigued me! If possible, once you do figure it out, could you let us know what it was? Perhaps changing details or whatever, but the general method would be interesting. Josh -- A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams Liam O'Hagan wrote: > The only option to influence the device in question would be to time the > entry of coins to some specific interval. This device is used in about > 300000 machines in this country alone, so it would be highly unlikely that > some timed-entry criteria would have gone unnoticed in the 9 12 years this > device has been operating! -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics .