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<1234567…34>
  • 48K Speccy Repair Log.Some people may know my love for writing up my repairs of arcade PCBs on various forums so thought I would do the same for this little fella. Had th…

    ... eight 4116 DRAM chips. These are very primitive chips, each chip only ... These are the infamous half faulty DRAM chips, they are actually 64kbit ... , so a large number of faulty chips rolled off the production line ... a little app and the 48.rom file from an emulator ...
    Womble Womble August 2010 Hardware
  • Sinclair Basic Vs PascalWith the rise of the structured programming movement (Jackson et al) was it wise to put the Basic programming language into the Spectrum. By this ti…

    ... with an external 16 KB ROM cartridge (infamously known ... redesigned to accommodate the necessary 48 KB of ROM internally, instead ... no need for it. Chips are cheap, printed circuits are ... [/quote]

    Yes, modern chips are cheap, fast and OBSCENELY ...
    torstum torstum September 2006 Sinclair Miscellaneous
  • Spectrum items for saleI have many Spectrum items like Spectrum, Spectrum +, power adapters, Centronics Interface, Kempston Interface, Light Pen Interface(these are built b…

    ... 720Kb small and one 720 Kb big) with SMPS for the ... /> My testing Rubber Speccy 48 with all chips on sockets (very useful ...
    techiecal techiecal June 2014 Sales
  • FOR OLD-SCHOOL MANIAX (tape ;) ).Hi there. My friend started to work on new way of loading games for ZX. It's dedicated to old-school fans, who wants only tape stuff. There is a …

    ... really great: ALL SPECCY'S 48 KB LOADS IN 56 SEC!! :)
    Yerz Yerz December 2003 Sinclair Miscellaneous
  • DMA interface for ZX Spectrum[url]http://velesoft.speccy.cz/data-gear.htm[/url] This is internal DATA-GEAR interface for any 8-bit computer with Z80CPU. Use Direct Memory Access…

    ... MEM->MEM transfer (=17.48 kB per frame).

    VELESOFT
    velesoft velesoft March 2007 Hardware
  • New game coming soon: Skyscraper of DoomI finally did it... Back in 2005 when my interest in Spectrum returned, I started writing an adventure game for Zx Spectrum. I had a very faint idea…

    ... OF DOOM. It's a 48 KB game of Dizzy genre (you ...
    Ralf Ralf February 2009 Games
  • Introducing my new game: HeritageAs I've already said in another topic I'd like to bring my own little contribution to "Make this Christmas special" action. Let me introduce my new S…

    ... creating my games for ZxSpectrum 48 kb version.

    It will ...
    Ralf Ralf December 2009 Games
  • converting ZX128 software for SAM COUPESAM COUPE is computer compatible with ZX48 model. Use same ports, same keyboard with compatible membrane, 64kB adress space with possibility connect …

    ... software it games for ZX16/48 kB. And what about using ZX128 ... /1
    D4 = rom 128/48
    D5 = disable port 32765 ... from adress 0 original ZX 48 rom to ram memory with ...
    velesoft velesoft April 2010 Games
  • Tr-Dos questionI hope that people who know Tr-Dos also read these forums :) Let's suppose that I have a .trd disk with an executable file. I want to make this fil…

    ... autorun my file in 128 kB mode.

    How can ... will run my file in 48 kB mode?
    Ralf Ralf November 2011 Development
  • Rodland in colourAs promised (some time ago already ;) ), here is my hack attempt to add some colour to Rodland : [URL=http://www.image-share.com/ipng-1680-98.html][…

    ... to do it with 48 kB but 128 kB with all this paging ...
    Ralf Ralf August 2012 Games
  • Pac-Land .tapThe .tap version of Pacland: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0003577[/url] [url]ftp://ftp.worldofspectrum.org/pub/sinclair/gam…

    The .tap version of Pacland:

    [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0003577[/url]
    [url]ftp://ftp.worldofspectrum.org/pub/sinclair/games/p/Pac-Land128.tap.zip[/url]

    1) is a crack
    2) works with 48 kB too
    Ralf Ralf September 2012 Infoseek database
  • Renegade:Attack of the Clones :)I have been examining the code of Renegade recently as I really like this game and would like to know how it is done. Look what I have discovered : …

    ... 38337,0 POKE 38338,0 (48 kB version)
    [URL=http://www ...
    Ralf Ralf October 2012 Games
  • Announcing Renegade mod - my gift for Renegade fansYou know that I'm playing a bit with existing games code, adding colour here and there, changing this or that :) This time I'd like to announce my m…

    ... fun !

    The download (48 kB .sna so far, .tap will ...
    Ralf Ralf March 2013 Games
  • Questions about Spectrum 48K soundsHi, I find it a very intriguing task to produce sounds on Spectrum 48K, which has only a beeper. - I am very curious to know how the games produced t…

    ... have occupied much more than 48 KB
    - The BEEP routine produces ...
    Zerg Zerg October 2013 Development
  • Foggy London - A 'Sherlock' EnvironmentAfter visting [I]WILDERLAND[/I] a year ago I have no moved on to [I]FOGGY LONDON[/I] at the turn of the last century! -- Have you ever asked yourself…

    ... can be found in the 48 kB of Spectrum memory?

    CfromAT CfromAT December 2013 Games
  • New version Emulator ZEsarUX-1.0Hi I have uploaded a new version of my Spectrum/ZX80/ZX81 emulator. This is a major stable version, with real timing for all the models and with hi-…

    ... RAM pack emulation of 32 KB and 48 KB to ZX80/81
    chernandezba chernandezba May 2014 Emulators
  • FOR OLD-SCHOOL MANIAX (tape ;) ).Hi there. My friend started to work on new way of loading games for ZX. It's dedicated to old-school fans, who wants only tape stuff. There is a …

    ... really great: ALL SPECCY'S 48 KB LOADS IN 56 SEC!! :)
    Sadako Sadako December 2003 Sinclair Miscellaneous
  • Print 'n' Plotter SPRITE MACHINEJust got this from an ebay seller this afternoon. I just TZXd it and sent it to the Steve at the vault, yet it might be a while before it gets put up…

    ... using HiSoft I will have 48 Kb even in 128 BASIC mode ...
    na_th_an na_th_an May 2004 Games
  • new release of winTZXHi all I released winTZX 0.4drc1 (04/02/2005) + Added CSW file support + Added block selection (replay and save) + Added reverse output + Added direc…

    Its a well known fact that the rubber keyed Spectrum used half the memory on faulty chips that Sinclair bought cheap. Its probably in the FAQ. I don't know much about the 48K hardware. I only use +2A.
    Fraser Fraser January 2005 Emulators
  • ZX-81 Ram Pack problemHi! I know this is a ZX Spectrum forum, but I am hoping someone here might be able to help me out... I have posted this to c.s.s. but noone was able…

    ... that your memorypack has some faulty chips in them (as you already ... 't reach Zero, ypu have faulty memory.
    Dr BEEP Dr BEEP September 2005 Sinclair Miscellaneous
  • Ideas for new tape storage formatSome called them decoders or encoders, but I think that it is just something like form of presentation. Goal is of course smaller size, support of e…

    ... loaders which are longer than 48 KB.
    Anyway, 20000x50 MB is ... wrong if CSW has 500 KB. We are in year 2005 ... first 2 (for me 500 KB is compact today). Third point ...
    piters piters October 2005 Development
  • Ideas for new tape storage formatSome called them decoders or encoders, but I think that it is just something like form of presentation. Goal is of course smaller size, support of e…

    ... loaders which are longer than 48 KB.

    [/quote]

    KB. We are in year 2005 ...
    ADJB ADJB October 2005 Development
  • Games that are impossible to complete due to bugs!I'm trying to compile a list of Speccy games that cannot be completed because of a bug (or simply bad programming)! Here's a few... [B]Frankie Goes …

    Hi again
    After completing 48 kb version of Rastan I turned ...
    Ralf Ralf November 2005 Games
  • What happens during a reset?I always used to wonder about this, but only thought a bit more about it last night when noticing after all these years what actually happens. Obvio…

    ... a TRICK since the faalty chips ARE 16BITS ,but the 'upper ... /> Not quite.

    The faulty chips Sinclair used were suppost to ... , because part of them were faulty, they were used as 32k ... use all 64k of the chips, by means of having two ...
    MikeW MikeW February 2006 Sinclair Miscellaneous
  • Unpublished spectrum gameHi there I have a Spectrum PDS development environment and before I get rid of my old PC which has an ISA slot I thought I should ask this question i…

    ... RAM, I suppose that this 48 KB file will overwrite everything in ...
    Black Hole Black Hole March 2006 Games
  • RAM chips are 4164s and 4564s interchangeableI paid for some 4164s online, for upgrading my Spectrum 16K to 48K, and I've been given 4564s. I've tried these along with the correct logic ICs and …

    Chips should be compatible.
    But there is chance that some chip is faulty - chips are probably used ones - no one produces it more.
    Ask replacement...
    piters piters September 2006 Hardware
  • RAM chips are 4164s and 4564s interchangeableI paid for some 4164s online, for upgrading my Spectrum 16K to 48K, and I've been given 4564s. I've tried these along with the correct logic ICs and …

    [QUOTE=piters]Chips should be compatible.
    ... chance that some chip is faulty - chips are probably used ones - ... added the extra logic chips and the wire link( ... take out all the RAM chips, and put them back ... tell you which chip is faulty - but you have to ...
    DEATH DEATH September 2006 Hardware
  • Speccy goes to the Internet!!![url]http://zx.pk.ru/attachment.php?attachmentid=4998&d=1176284955[/url] It's not a joke. This program really works. It uses an RS232 modem (or cel…

    ... will work even on Speccy 48 kb.
    Technically the program is ...
    Sonic Sonic April 2007 Development
  • Speccy goes to the Internet!!![url]http://zx.pk.ru/attachment.php?attachmentid=4998&d=1176284955[/url] It's not a joke. This program really works. It uses an RS232 modem (or cel…

    ... will work even on Speccy 48 kb.
    Technically the program is ...
    Skarpo Skarpo April 2007 Development
  • best/worst arkanoid clones...?personally I always liked [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0002768"]Krakout[/URL] better than Arkanoid itself. really addictive…

    ... I once had a spectrum 48 with faulty RAM, and ricochet was ...
    Digital Prawn Digital Prawn June 2007 Games
<1234567…34>

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