The ZX81 information letter       Revised: 30 Jan 2000
                      ===========================

 The latest revised parts of the ZX81 FAQ are marked with *

 First of all I greet all newcomers who just connected to this ZX81
 mailinglist and wish you a happy stay with all of us ZX81 enthusiasts.
 Jack Raats the initiator and moderator of this list asked me to make
 some kind of reference list to which each one here can refer, to get
 questions answered and find general information about the ZX81 and the
 emulators so this is kind of a ZX81 faq list even though there are not
 many questions asked here yet :-)
 This list will be posted on a regular basis and I would therefore be
 very grateful if readers here could mail me if any information in this
 list is not correct and needs changing or if you have and new information
 to add to this list, my email address is:
*m.zwan@hccnet.nl or you can also write comments here.

 Q So what is this ZX81 Mailinglist all about?

 A This list was initiated and established by jack Raats with the idea
   in mind that ZX81 users all over the world could have a forum to which
   they can be connected with all other ZX81 lovers all over the world.
   This way users can stay in touch and can be assured that when they ask
   a question or write about a new development they just made will be send
   to all those connected, many ZX81 hard/software experts are connected
   to this list.

 Q Are there any other place where I can get this list?

 A Yes, this ZX81 Faq can also be found on WOS:
   ftp.void.jump.org/pub/sinclair/zx81/faq
   btw, there are also very nice ZX81 programs there

 Q But I don't have a ZX81?

 A There are ZX81 emulators for different platforms and there are also
   ZX81's being sold and hardware for it and sometimes someone sells a
   ZX81 in the newsgroup comp.sys.sinclair, for example there is the
   homepage by Zebra who sells ZX81's as computer kit's:
   http://www.users.interport.net/~zebra/ts/
   And you can also buy ZX81 hardware at:
   RMG Enterprices 14784 S Quail Grove Cir
   Oregon City OR 97045
   503 655-7484 (10Am-7Pm Tue-Sat)
   Fax 503 655-4116

   You could also get in touch with the German ZX Team Members, they make
   a magazine (German) and have a hardware supplier for the ZX81, their
   site is: http://home.t-online.de/home/p.liebert/zx-team.htm

 Q Are there any good ZX81 emulators for the PC?

 A A very good one, called Xtender, you can get the latest version
   at http://www.delhez.demon.nl/ this is Carlo's homepage.

 Q Can you name a few features this emulator has?

 A Sure, here are some of the features you can find in Xtender2:

   - Full low-level emulation of a ZX81.
   - Fully User-Defined emulated Hardware via configuration file.
   - Supports both SLOW and FAST mode.
   - Can handle any ROM-code: for example ZX80, ZX81, Aszmic, Forth, or
     even a user-developed ROM.
   - Very realistic video output - not seen before on other ZX81 emulators
     (AFAIK) - because XTender2 includes a TV-emulator: your PC monitor
     responds like a real TV-set.
   - Auto-start ZX81 programs directly from DOS-prompt,
     or by double-clicking P-file in Windows-95/NT files menu.
   - Virtual tape interface: SAVE/LOAD your data to/from a virtual tape
     recorder and see the tape signals being echoed to the screen!!
   - Significantly improved keyboard handling. The keyboard will never
     lock, multiple keypresses are possible, and even keyboard matrix
     errors are emulated properly!
   - Support for QWERTY, AZERTY and QWERTZ keyboards.
   - Graphical printer output.
   - Capable to run any full hi-res, semi hi-res or mixed resolution
     program (and similar complicated code) correctly.
   - Slow emulation! (Most users will be very happy about that.) Pentium
     system is recommended: XTender2 runs at approx. normal ZX81 speed
     on a 120 MHz Pentium.

 Q Is this emulator still supported and can I register it?

 A Yes, there is still support for Xtender(1) and you can register it,
   encountered bugs will be fixed, the latest version is 1.17 and is
   available from Carlo's homepage mentioned above, new features however
   will not be developed for the Xtender(1) version, this development
   will be continued in the newer version Xtender2.

   Carlo says 'it would not be fair to forget the people with slower PC's,
   that's why support for Xtender(1) continues'
   Thank you Carlo! Microsoft can learn a lesson from this :-)

   For support for Xtender you can get in touch with Carlo himself:
   xtender@delhez.demon.nl

   Another good emulator which is freeware is ZX81 (original name ...) is
   a ZX81 emulator for DOS and Windows 95 (not NT). Supports ZX81 ROM and
   runs ZX80 and AszMic ROMs, Slow and Fast modes. Runs virtually everything
   (except a chess game) including all known HRG methods I've come across.
   Z80 debugger with breakpoint & single step. Source code available. Speed
   locked if required. Freeware.

   It requires probably about a 486/50 with 4Mb RAM, dependent on app running.
   Text mode is autodetected and fast rendered. It isn't as fast as Xtender 1
   (which cheats :))

   The emulator can be found on:

   http://users.aol.com/autismuk/sinclair.htm

 Q But I have a Atari?

 A The are many ZX81 emulators for different computers and operating systems
   check out: ftp.nvg.unit.no/pub/sinclair or these WWW sites from which you
   can also download ZX81 emulators:

   http://www.freeflight.com/fms/comp/
   http://www.uruk.org/~erich/emu/main.html

 Q I have some Memotech modules for my ZX81 but I don't have the manual for
   them, is there any documentation for them on the Internet?

 A Yes there is, documentation for the Memotech modules can be found on the
   ZX-Team Homepage at: http://home.t-online.de/home/p.liebert/zx-team.htm

 Q Are there any ZX81 programs on the Internet?

 A Yes many, they are on ftp sites but can also be downloaded from webpages:
   ftp://ftp.nvg.unit.no/pub/sinclair/zx81/utils
   ftp://ftp.nvg.unit.no/pub/sinclair/zx81/snaps/packs
   ftp://ftp.nvg.unit.no/pub/sinclair/zx81/snaps
   http://edge.edge.net/~krbaker/zx81.html
   http://members.xoom.com/zx81 (this homepage also contains the International
   ZX81 Magazine)
   ftp://ftp.void.jump.org/sinclair/zx81
   And my own ftp site at ftp.cis.tzo.com

*Q Where can I find Hires programs for my ZX81?

 A There are many ZX81 Hires programs at Fred Nachbaur's page at:
   http://easyweb.easynet.co.uk/~stevemcd/fredn.htm
   These Hires programs wil run in Hires on XTender2 or the freeware ZX81
   emulator, to make use of true Hires on a standard ZX81 you will need a
   static Ram or a small modification, check out the ZX Team homepage for
   this: http://home.t-online.de/home/p.liebert/zx-team.htm

 Q What would for example be a good starting point when I look for
   information for my ZX81?

 A For that purpose a ZX81 Webring was created to which many pages scattered
   all over the internet are connected, btw, anyone who has a ZX81 related
   page can become a Webring Member, the Webring can be found at:
   ZX81-Web-Ring: http://home.t-online.de/home/sinclair_zx81/zx81_wbr.htm

 Q Are there any ZX81 email magazines?

 A Yes there is my ZX81 magazine at the International ZX81 Magazine Homepage:
   www.zx81.base.org or huizen.dds.nl/~jarasoft
   Or the mirrorsites:
   http://www.xs4all.nl/~jarasoft
   http://www.cyberspace.org/~jarasoft

 * Note: The ZX81 magazine will not be updated, instead of this I will
   dedicate my time in updating and documenting ZX81 programs which will
   be available at ftp://cis.tzo.com, this was what I doing anyway already,
   new updated/documented files will be announced on the ZX81 mailinglist.

 Q I have a original ZX81, can I still use those snaps from pub sinclair?

 A Congratulations, yes you can, Wilf Rigter (also connected to this list)
   has written a very simple and effective (no hardware needed, just a wire)
   PC to ZX81 transfer program that load's snap's into you're ZX81.
   This program can be found on:
   ftp://ftp.nvg.unit.no/pub/sinclair/utils/pc/zxtape.zip
   ftp://ftp.nvg.unit.no/pub/sinclair/utils/pc/zxtape.txt

 Q This zxtape utility seems to have trouble with faster computers, are
   there any updates for faster PC's?

 A Yes, newer versions are being developed by Roger Dipaolo, in fact the latest
   version available can do Saving and Loading.
   You can get the latest version at:
   http://www.geocities.com/SiliconValley/Ridge/9965/

 Q Are there any other ZX81<->PC Transfer methods?

 A Yes, Steven McDonald has just released his ZX81<->PC converters, allowing
   two way communication with nothing more than software. The converters are
   free but you will need additional sampling software for the PC. Take a
   look at the latest versions and docs at:
   http://easyweb.easynet.co.uk/~stevemcd/zxconverters.htm

 Q Is there a disassembly of the ZX81 Rom available on the Internet?

 A Yes there is one, although it's not completed yet.
   You can get it at: http://www.ime.usp.br/~einar/zx81roma.zip

 Q Very often I am looking for a ZX81 program on the Internet and I can't
   seem to find it, is there some kind of search engine especially for the
   ZX81?

 A Yes, there is the Sinclair Infoseek search engine database by Martijn
   van der Heide, he now has also added ZX81 data to find ZX81 files, it's
   at: http://www.void.demon.nl/archive.html#search

 Q But I don't have direct internet access, can I still get websites and
   programs?

 A Yes you can, I also surf the net and get files from ftp sites.

   This is how you get a program from a ftp site:

   To: ftpmail@sunsite.doc.ic.ac.uk
   Subject:
   -----------------------------------------------------------------------
   open ftp.nvg.unit.no
   cd /pub/sinclair/utils/pc
   size 500k
   uuencode
   get zxtape.zip
   quit

   This is how get WWW pages, (including programs on them) you can get
   several pages in one message, just leave a blank line inbetween:

   To: getweb@usa.healthnet.org
   Subject:
   -----------------------------------------------------------------------
   get http://easyweb.easynet.co.uk/%7Estevemcd/zx81.htm

  Q Are there any ZX81 Homepages?

  A Yes many, for example try these:
    http://edge.edge.net/~krbaker/zx81.html
    http://www.maths.nott.ac.uk/personal/cpg/zx81/index_old.html
    http://www.hh.schule.de/hhs/mjaap/zx81.htm
    http://www.csv.warwick.ac.uk/~mauqx/
    http://www.gre.ac.uk/~bm10/zx81.html
    http://home.t-online.de/home/p.liebert/zx-team.htm
    http://easyweb.easynet.co.uk/~stevemcd/zx81.htm
    http://edge.edge.net/~krbaker/zx81.html
    http://www.nvg.unit.no/sinclair/zx81-contents.html
    http://www.netbound.com/jeffg/text/amigavzx

  Q Is it possible to search the Internet for a ZX81 related site by
    using only email?

  A Yes you can, do this:

    To: getweb@usa.healthnet.org
    Subject:
    ---------------------------------------------------------------------
    http://webcrawler.com/cgi-bin/WebQuery?ZX81


    Greetings,
    Martin