---- START NEW MESSAGE --- Received: from cherry.ease.lsoft.com [209.119.0.109] by dpmail10.doteasy.com with ESMTP (SMTPD32-8.05) id A0F6437B007A; Thu, 29 Jan 2004 16:10:30 -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 <5.00CC39D0@cherry.ease.lsoft.com>; Thu, 29 Jan 2004 18:42:33 -0500 Received: from MITVMA.MIT.EDU by MITVMA.MIT.EDU (LISTSERV-TCP/IP release 1.8e) with spool id 4659 for PICLIST@MITVMA.MIT.EDU; Thu, 29 Jan 2004 18:21:39 -0500 Received: from MITVMA (NJE origin SMTP@MITVMA) by MITVMA.MIT.EDU (LMail V1.2d/1.8d) with BSMTP id 7602; Thu, 29 Jan 2004 18:20:22 -0500 Received: from smtp1.clear.net.nz [203.97.33.27] by mitvma.mit.edu (IBM VM SMTP Level 430) via TCP with ESMTP ; Thu, 29 Jan 2004 18:20:21 EST X-Comment: mitvma.mit.edu: Mail was sent by smtp1.clear.net.nz Received: from jc2 (218-101-75-53.dialup.clear.net.nz [218.101.75.53]) by smtp1.clear.net.nz (CLEAR Net Mail) with SMTP id <0HS9004J6Y5XMJ@smtp1.clear.net.nz> for PICLIST@MITVMA.MIT.EDU; Fri, 30 Jan 2004 12:20:22 +1300 (NZDT) MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Mailer: Microsoft Outlook Express 6.00.2600.0000 Content-type: text/plain; charset=Windows-1252 Content-transfer-encoding: 7bit X-Priority: 3 X-MSMail-priority: Normal References: <2193429B07D9914D97216EBBAA6AB8BD1A0533@whitlam.corp.gli.com.au> <000f01c3e6bb$f7580700$0300a8c0@main> Message-ID: <035701c3e6be$aae03160$7223fea9@jc2> Date: Fri, 30 Jan 2004 12:21:43 +1300 Reply-To: pic microcontroller discussion list Sender: pic microcontroller discussion list From: Jinx Subject: Re: [PIC:] Disassemblers To: PICLIST@MITVMA.MIT.EDU Precedence: list X-RCPT-TO: Status: U X-UIDL: 371856377 > It's a Zilog Z86, 1k of code Are there parts of the code that just won't disassemble or look strange ? It's my understanding that the Z8x has many undoc- umented op-codes which, without a disassembler written to do so, might not be reverse-engineerable back to readable code. For example, every disassembler I've used with 6502 code will show ??? for any undocumented op-code and it would be easy to assume these ??? are embedded data or unimplemented code space. I've used these instructions occassionally to make snooping difficult and mislead hackers -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details. .