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<1…16171819202122…34>
  • The best emulator for the ZX81?Hi everyone, could you please recommend me an emulator for the ZX81 which is good and easy? Thanks!

    ...

    Excellent ZX81 emulation, along with many other ... load option, supports hires ZX81 software, memory expansions up ...
    Along with another ZX81 forum member I tried this ... Flight Simulation, Mazogs, Frogger, 1K Chess, some new games like ...
    Pegaz Pegaz May 2016 Emulators
  • The best emulator for the ZX81?Hi everyone, could you please recommend me an emulator for the ZX81 which is good and easy? Thanks!

    ... =freefr

    Excellent ZX81 emulation, along with many other ... load option, supports hires ZX81 software, memory expansions up ... , Flight Simulation, Mazogs, Frogger, 1K Chess, some new games like ... screen corruption plus the ZX81 Zonx AY emulation is ...
    moggy moggy May 2016 Emulators
  • The best emulator for the ZX81?Hi everyone, could you please recommend me an emulator for the ZX81 which is good and easy? Thanks!

    ... manually ?[/quote]
    No. Most ZX81 software is in a .81 ... Sinclair and three Timex configurations (1k RAM, 2k RAM, 16k RAM ...
    1024MAK 1024MAK May 2016 Emulators
  • The best emulator for the ZX81?Hi everyone, could you please recommend me an emulator for the ZX81 which is good and easy? Thanks!

    ... software library for the ZX81 works at 1k, 2k, or 16k. But ... to the way that the ZX81 generates it's video display ...
    1024MAK 1024MAK May 2016 Emulators
  • Hi-res graphics mode in the ZX81?Hi all, I am starting to discover this interesting machine :) I have a question for those experts in the ZX81: The Hi-res mode was an option availab…

    ... hi-res: different from regular ZX81 character set, but with the ... . This works with factory-state ZX81 [i]internal[/i] RAM, ... the specific purpose of changing ZX81 character set. Aka [u] ... in 1K (keyword: "Dr. Beep"), demo effects believed impossible for a ZX81 ...
    RetroTechie RetroTechie May 2016 Sinclair Miscellaneous
  • 20 augustus 2016 | Sinclair Takeover #4 | Maarssen - The NetherlandsThis year there will be yet another "Sinclair Takeover" in Maarssen (NL)! Here you can find the Facebook event: https://www.facebook.com/events/…

    And someone will demonstrate the 1K hires games on a ZX81.
    Still trying to make a schedule to talk about them myself.
    Dr BEEP Dr BEEP August 2016 Announcements
  • Usefullness of program listings in magazinesEarly computing magazines had printouts of program listings. I always felt this was a nice thing in that you might read the code and learn something,…

    ... random 'dodge' games for the 1K ZX81. A new one every month ...
    joefish joefish September 2016 Sinclair Basic
  • ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…

    ZX81's with 4k or more ... the standard machine only has 1k internal RAM, most people have ...
    1024MAK 1024MAK October 2016 Hardware
  • ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…

    [quote="1024MAK;882126"]ZX81's with 4k or more ... the standard machine only has 1k internal RAM, most people have ... 't have enough knowledge of ZX81 inner workings, specially the scanline ...
    RMartins RMartins October 2016 Hardware
  • ZX Spectrum, ZX81 and Middle SchoolersToday I gave a talk to 120 US middle school kids (7 grade) about computer science and careers in programming. I also gave them a taste of programmin…

    I started life on a 1K ZX81 - hard to believe now. It ... suggesting we go back to 1K or even 48K but I ...
    Paddy Coleman Paddy Coleman December 2016 Sinclair Miscellaneous
  • ZX GameDev tools consolidatedHello WoS! It's been a while, yet with a plenty of decent gamedev tools (including new ones!), is there a [i]single/pivot table[/i] or some datash…

    ... a natural extension of the zx81 version of the library. Again ... , comprehensive libraries written in asm (1k functions), capable of targeting bankswitched ...
    Alcoholics Anonymous Alcoholics Anonymous January 2017 Development
  • has anyone thought about putting a chess game on that 1k thats spare in the rom?^

    ... language source code for 1K Chess on the ZX81 is kicking about ...
    GReW GReW January 2017 Sinclair Miscellaneous
  • has anyone thought about putting a chess game on that 1k thats spare in the rom?^

    ... />
    Alternatively there is the ZX81 version of the engine mentioned ... /> Whilst the original 1K chess for the ZX81 was a great achievement ... it at least consider the ZX81 FIDE version which is ... as the worlds smallest COMPLETE 1K chess program for 8- ...
    moggy moggy January 2017 Sinclair Miscellaneous
  • Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…

    ... taken a few ideas from zx81 chess.

    Its just ... never going to fit into 1k, which was a really significant ...
    Arkannoyed Arkannoyed March 2017 Development
  • Memory questionsQuestion 1: PRINT PEEK 23732+256*PEEK 23733 returns 65535 for a 48K Spectrum and 32767 for a 16K Spectrum. PRINT PEEK 16388+256*PEEK 16389 return…

    ... presumably that's the bare 1K machine, "2K" has a 2K ... + refers to anything with a ZX81-esque 18K RAM pack (which ...
    The Mighty Dopethrone The Mighty Dopethrone March 2017 Sinclair Miscellaneous
  • Memory questionsQuestion 1: PRINT PEEK 23732+256*PEEK 23733 returns 65535 for a 48K Spectrum and 32767 for a 16K Spectrum. PRINT PEEK 16388+256*PEEK 16389 return…

    ... presumably that's the bare 1K machine, "2K" has a 2K ... + refers to anything with a ZX81-esque 18K RAM pack (which ... 2k bytes to the internal 1k byte, making a total of ...
    1024MAK 1024MAK March 2017 Sinclair Miscellaneous
  • Memory questionsQuestion 1: PRINT PEEK 23732+256*PEEK 23733 returns 65535 for a 48K Spectrum and 32767 for a 16K Spectrum. PRINT PEEK 16388+256*PEEK 16389 return…

    ... 2k bytes to the internal 1k byte, making a total of ... 32K/64K RAM for the ZX81?
    The Mighty Dopethrone The Mighty Dopethrone March 2017 Sinclair Miscellaneous
  • Spectrum Use for ZX81 Pseudo Hi-ResHi Folks, I've been looking around at some of the "Hi-Res" stuff which was achieved on the ZX81 and I came across the faq https://www.landley.net/…

    Normally the ZX80 and ZX81 use the Z80 CPU to ... size) using the standard inbuilt 1k of RAM (as long as ...
    1024MAK 1024MAK April 2017 Assembler
  • Comp.Sys.Sinclair Crap Games Competition 2017As the creator of the second-least crap game in last year's competition (and the only mug stupid enough to agree to host it this year) I am proud/ash…

    ... ever since I had a 1K ZX81, I might be running into ... those techniques so beloved of ZX81 programmers, the NOT PI, SGN ...
    The Mighty Dopethrone The Mighty Dopethrone April 2017 Games
  • Spectrum +2 grey ear mod?Is it possible to turn the sound port on the back of a grey Spectrum +2 into an ear input? I know it's possible for the black +2 but I can't find muc…

    ... day, there were adverts for ZX81 RAM packs that went way ... small routine into the regular 1K of memory that allowed a ...
    The Mighty Dopethrone The Mighty Dopethrone November 2017 Hardware
  • Spectrum +2 grey ear mod?Is it possible to turn the sound port on the back of a grey Spectrum +2 into an ear input? I know it's possible for the black +2 but I can't find muc…

    Ahh, the ZX81 needs a different set ... ) is (are) only providing 1k bytes, the memory provided by ... range.
    However, the ZX81 uses a special arrangement to ... result is that a ZX81 with a Memotech 64k ... modern expansion designs allow a ZX81 to have more than ...
    1024MAK 1024MAK November 2017 Hardware
  • High score table routineI wrote this general purpose high score table routine. It stores 5 scores and displays them alongside the player names, which are 8 characters long. …

    I just wrote one too for my 1K hires ZX81 game.
    Source is here.
    http://sinclairzxworld.com/viewtopic.php?f=4&t=552&start=100#p29126
    Dr BEEP Dr BEEP December 2017 Assembler
  • ATARI 2600 PORTSThere's a few Atrai 2600 games I've loved and would like to see ported to Speccy - anyone fancy? I know 'Yars Revenge' got a great reboot... The gu…

    ... it to be ported in 1K hires for the ZX81.
    Dr BEEP Dr BEEP February 2018 New game ideas
  • October 20th -> SINCLAIR TAKEOVER #6 @ MaarssenBetter late then never! This year (actually, this saturday :) ) another Sinclair Takeover (the 6th edition!) will be held at the HCC Commodore Fair i…

    I saw the livestream.
    Too busy with everything.....
    Especially the release of game 50 in 1K hires for the ZX81.
    Game 49 is out since this weekend.
    Dr BEEP Dr BEEP October 2018 Announcements
  • Non-repetitive RNDHi guys) Perhaps, some of you already encountered a situation, when one needed a set of [b]unique [/b](pseudo-)random values, say, from zero to 25…

    ... Spectrum, but also on the ZX81.
    I even try to ... possible since most of my ZX81 games run in 1K (screen included).
    Dr BEEP Dr BEEP November 2018 Sinclair Basic
  • Did you ever had such a good idea...... that you thought about registering it and developping it for the market? I now have an idea for a new kind of puzzle. The first puzzles creat…

    ... . More on sinclairzxworld about my 1K hires games on the ZX81.
    Dr BEEP Dr BEEP February 2019 Chit chat
  • Brain 8I am glad to present my new "experiment" in Sinclair Spectrum 48K BASIC. https://drive.google.com/file/d/17_wCFWaAl5diIVt3rPLTbKhxDmPmYmOs/view?us…

    ... do you use the typically ZX81 BASIC definitions of integers e ... these save RAM (particularly in 1K scenarios) but that the trade ...
    patters patters April 2019 Brand new software
  • Brain 8I am glad to present my new "experiment" in Sinclair Spectrum 48K BASIC. https://drive.google.com/file/d/17_wCFWaAl5diIVt3rPLTbKhxDmPmYmOs/view?us…

    ... do you use the typically ZX81 BASIC definitions of integers e ... these save RAM (particularly in 1K scenarios) but that the trade ...
    IvanBasic IvanBasic April 2019 Brand new software
  • Breaking the Ice (another 1 line BASIC game)@Patters pushed me to do it... This is another 1-line BASIC game, with the same restrictions discussed. The mission: to save 10 penguins that a…

    ... to coding 1K games with hires graphics on the ZX81.
    Still ... it to a 1K hires game on the ZX81.
    My latest ... 1K hires game is based ...
    Dr BEEP Dr BEEP November 2019 Brand new software
  • Line - a one line arcade gameHi, I have published Line, a game written in a single line of BASIC. Thanks to Einar Saukas for additional optimisations, suggestions, and fixes. …

    I am seeking idea's to code in 1K hires on a ZX81. ONELINERS are often a good start.
    I must think of a few things, but I like the idea although in gameplay i ressembles Flappy Bird a bit.
    Dr BEEP Dr BEEP November 2019 Brand new software
<1…16171819202122…34>

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