Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!rpi!crdgw1!uunet!van-bc! From: lphillips@lpami.wimsey.bc.ca (Larry Phillips) Newsgroups: comp.sys.amiga Subject: Re: DKB-Trace Problems Message-ID: <2177@lpami.wimsey.bc.ca> Date: 29 Oct 90 11:43:03 GMT Lines: 38 Return-Path: To: van-bc!rnews In <2670@dsacg3.dsac.dla.mil>, nfs1675@dsacg3.dsac.dla.mil ( Michael S Figg) writes: >In article <90301.112031UH2@psuvm.psu.edu>, UH2@psuvm.psu.edu (Lee Sailer) writes: >> In article <41254@cc.usu.edu>, SL9QW@cc.usu.edu (Amiga IS Multimedia. An apple >> is a fruit.) says: >> >> >on my Amiga 1000/w 2.5 megs. I have FTP'd it several times (binary) and then >> >downloaded it to my computer Via X-modem, and when I try to run it, I get a >> >> Try some other transfer protocol instead of Xmodem. Xmodem adds (I seem >> to recall) NULL bytes at the end of the file to pad it out to 128 or 256 >> byte blocks, or some such. This doesn't matter to MSDOS, but makes >> AmigaDos ill. >> >> lee > > >I've heard of this problem before of something padding the end block of a >file with NULL bytes, but I don't think it is x-modem that is doing it. I've >been using x-modem for close to 4 years now and never had any problem with >it and have never seen anything like this. Would like more information on what >this NULL byte padding problem is/was though. XModem is specified in such a way that it WILL pad any file that is not an exact multiple of 128 bytes long. Some xmodem programs will pad with a CTRL-Z, (CP/M EOF), when transmitting a file, while others will pad with bytes of 0x00. The reason you haven't seen this yet is because most Amiga programs 'autochop' the received file. Prevents a lot of headaches. -larry -- It is not possible to both understand and appreciate Intel CPUs. -D.Wolfskill +-----------------------------------------------------------------------+ | // Larry Phillips | | \X/ lphillips@lpami.wimsey.bc.ca -or- uunet!van-bc!lpami!lphillips | | COMPUSERVE: 76703,4322 -or- 76703.4322@compuserve.com | +-----------------------------------------------------------------------+