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Search Again :: Adv Search 1000 results in 0.009s
<1…567891011…34>
  • Sudden death of ZX Spectrum 48KHello A friend gave me a 48K rubber keyed Spectrum. I brought it home, hooked it up to my little TV and powered it up. I was very happy to see t…

    ... can test voltages. Alas no oscilloscope. I took the Spectrum apart ... and all the upper RAM chips are socketed. Also 4 ...
    memrah memrah December 2015 Hardware
  • Sudden death of ZX Spectrum 48KHello A friend gave me a 48K rubber keyed Spectrum. I brought it home, hooked it up to my little TV and powered it up. I was very happy to see t…

    ... to remove the upper RAM and concentrate on getting ... it should with no upper RAM).[/quote]

    ... I removed the upper RAM and powered up the Spectrum ... So apparently the upper RAM has nothing to do ... don't own an oscilloscope to perform more in- ...
    memrah memrah December 2015 Hardware
  • Introduce yourself[SIZE=3][FONT=Comic Sans MS]This is the thread to stop by & introduce yourself.[/FONT][/SIZE]

    ... after finding a dead 4164 RAM chip (IC27) using my oscilloscope :)
    Peter Mulholland Peter Mulholland April 2016 Chit chat
  • Harlequin 128K minor problems.....Hi All, I've just assembled my Harlequin 128K kit, I had initial problems with it that I traced to not having soldered all of the pins on a couple…

    ... a bit sensitive to the RAM brands as I found.
    oscilloscope.

    Greetings

    ingo ingo March 2017 Hardware
  • Disabling the ROM without removing the whole thingHi! I've got my hands on a non-working issue 6a. I suspect the ROM may be bad, but other things may be faulty as well. I've read that in an otherwis…

    ... tracks for the lower RAM to the ULA, and ... data lines to the RAM chips. Some of the ... RAM, so worth testing these. You do need a multichannel oscilloscope ... that controls the lower RAM. And the ULA responds ... power up without a lower RAM module fitted?

    1024MAK 1024MAK April 2017 Hardware
  • Repair ZX Spectrum +2 black issue 1Hi all, after a long time i will try to repair a ZX Spectrum +2 black i found the last days i know for sure that CPU is damaged (already repla…

    Both 4464 or 41464 (64Kx4) RAM chips will work, probably some ... .
    Do you posses an oscilloscope and ideally an EPROM-burner ...
    Mad Fritz Mad Fritz June 2017 Hardware
  • Quick questionHello, can someone tell me what the screen looks like when you power a 48k spectrum that has no ROM chip installed ? Thank you. François

    ... oscilloscope but I am no electronic expert.

    Could a RAM ...
    FrancoisL FrancoisL February 2018 Hardware
  • +3 - beeper sounds but no AY musicHi guys I am repairing a plus 3 revision 2 board that had no sound at all. Using schematics from https://zxnet.co.uk/spectrum/schematics/ I manage…

    ... the machine is doing; the RAM checks, for example, make high ... was waiting for a better oscilloscope (which hasn't turned up ...
    colourclash colourclash July 2019 Hardware
  • 128K refurb.... What is the best way?Here's the latest Spectrum I got... Finally got a Toastrack... Not sure if it was good value ( around US$100 ). [img]https://os.blackice.com.au/us…

    ... seems to be doing the RAM test and hitting the infinite ... . Also I've replaced the ram and have gone from permanent ... it according to the oscilloscope suggest a RAM failure still, but I ...
    cj7hawk cj7hawk March 2021 Hardware
  • 128K refurb.... What is the best way?Here's the latest Spectrum I got... Finally got a Toastrack... Not sure if it was good value ( around US$100 ). [img]https://os.blackice.com.au/us…

    ... an oscilloscope to confirm the ROM was looping in the RAM check ... use a 486's cache ram for my multiface build. It ...
    cj7hawk cj7hawk July 2021 Hardware
  • Emulator compatibility with real SpectrumHi emulator programmers... Having spotted for the last 6 months that my iPAQ is still missing a Spectrum emulator I started typing last tuesday - an…

    ... the lower part of the RAM is slower because of the ...
    Anders Anders September 2001 Emulators
  • Thanks for the memories... is it 16k or 48k? Hi. At three different flea markets in Gothenburg, Sweden I found just as many Spectrums... (and a ZX81! [img]/__forums/images/smiles/icon_smile.gif…

    ... out the size of their RAM-memory?

    Most basic ...
    Lars Lindblad Lars Lindblad January 2002 Sinclair Miscellaneous
  • a questionwho can tell us the peek-poke address of the ZX Spectrum Ram Top??

    who can tell us the peek-poke address of the ZX Spectrum Ram Top??
    Andy Andy April 2001 Sinclair Miscellaneous
  • Z88I Have a Working Z88 complete with 128k EPROM Pack, 128K RAM Pack, Soft Carry Case, PSU, Printer Cable and Manual. I also have Spare:- 1 off 32K…

    ... with 128k EPROM Pack, 128K RAM Pack, Soft Carry Case, PSU ... :-

    1 off 32K RAM Pack

    1 off ...
    Colin Carter Colin Carter July 2001 Sales
  • I have...I still have a working ZX-81 plus 16k RAM pack, still in it's box. I also have a ZX Spectrum 48k computer with the Sinclair Microdrive (plus Microdr…

    ... working ZX-81 plus 16k RAM pack, still in it's ...
    S S May 2001 Sales
  • Didaktik M (ZX Spectrum clone selling)Here is an offer to buy ZX Spectrum clone ( DIDAKTIK M ) from Slovakia, basic info: 100% functionality, Kempston & Sinclair joysticks connectors, tap…

    Here is an offer to buy ZX Spectrum clone ( DIDAKTIK M ) from Slovakia, basic info: 100% functionality, Kempston & Sinclair joysticks connectors, tape device connector, TV and VIDEO out, 48kB RAM/ 16kB ROM. Price GBP 50.
    peter peter January 2001 Sales
  • what spec pc are you running your speccy emulator onAll them giga hertz and bytes and what do i do with it mainly...play speccy games and old arcade games.. What spec pc do you have at the moment? I up…

    ... upgradem,,
    it got 256mb ram,,8.4 gig hard drive ...
    Andy Gurr Andy Gurr March 2002 Games
  • ZX81 Emulator (HARDWARE FREAKS NEEDED!!!!)For the ZX Spectrum I have programmed a ZX81-emulator. ZX81 games can't run directly on a ZX Spectrum due to memory adresses used by the Spectrum (li…

    ... 16384 is part of ZX81 RAM to load a program. The ...
    Dr BEEP Dr BEEP March 2002 Sinclair Miscellaneous
  • 2 days Meeting in Holland 27-04-2002 and 28-04-2002For you who were not there, a short compilation! "Moorhuhn", the addictive internetgame which keeps 1000's of Germans out of work is released for th…

    ... -Spectrum can be rebuilt with RAM at ROM adresses on the ...
    Dr BEEP Dr BEEP April 2002 Sinclair Miscellaneous
  • Character set variableCan anybody help me? I'm trying to find out where the pointer to the ascii character set is. I remember that if you wanted to change the font on the …

    ... put your own font in ram somewhere, then change a 2byte ... pointed to your font in ram, instead of the default font ...
    Neil^P Neil^P May 2002 Games
  • ROM cartridgeI forgot, I'm also after a cardridge to fit into my RAM Turbo interface, mainly to see if it works really. An ultimate one would be nice, but would …

    I forgot, I'm also after a cardridge to fit into my RAM Turbo interface, mainly to see if it works really. An ultimate one would be nice, but would consider anything that works, Horace & the Spiders or whatever. Again, not desparate to pay a fortune!
    whaletales whaletales May 2002 Wanted
  • learning with the spectrumHello friends! When you load a game into the spectrum (i.e a game for the 48k), how can you guess where is stored its first and its last instructio…

    ... and its last instruction in RAM?? I know from 0 to ...
    Anonymous Anonymous June 2002 Sinclair Miscellaneous
  • How to play without POKEsI have a Speccy story, hope you will like it. It's about 13 years back. I was sitting in our living room and playing Dynamite Dan (part 1) on rubber…

    ... touched the connector and the RAM was without power for a ...
    Dynamite Dan Dynamite Dan July 2002 Games
  • ZX Spectrum Community ContributionThere is a new interface named MB03 under development(IDE,Flashcard reader,2MB RAM,etc).You can see it on Sintech website. The price of this interfa…

    ... development(IDE,Flashcard reader,2MB RAM,etc).You can see it ...
    Anestis Anestis July 2002 Sinclair Miscellaneous
  • Sharopolis's QuizHere you are folks, My quiz, edutainment at its best. This is the first quiz I've compiled so sorry if its too easy or hard or whatever. Some of the…

    ... )

    12. How much RAM did the 128+ and the ...
    Sharopolis Sharopolis July 2002 Games
  • Mobilon Tripad PV600 HPC Pro Mips 4000Does anyone have such a HandHeld and if so have you used it with any of these programs. I have downloaded the Spectrum Emulator Version 1.1 (Build 1…

    ... to run require to much ram. I have a 250mg Compact ... Flash but only 16mg or ram. Any help at all would ...
    Wayne201 Wayne201 September 2002 Emulators
  • Speccy bits for sale/swapBeen digging about in the attic today and found two Speccy related bits. a 16k RAM pack for a ZX81 and a DK'Tronics Lightpen for a 48k Speccy Both …

    ... bits.

    a 16k RAM pack for a ZX81 and ...
    zeropolis79 zeropolis79 September 2002 Sales
  • My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …

    ... CPU running at 6mhz, 128k Ram and will run all Spectrum ...
    Takashi64 Takashi64 September 2002 Sinclair Miscellaneous
  • ZX-2-PC Interface : Is it dead ???Certainly not, but I had some problems getting the EPROM-reader constant. In my former threat I stated that it worked, well, it read ROM-values but n…

    ... .

    Another interface with RAM instead of ROM can make ...
    Dr BEEP Dr BEEP September 2002 Sinclair Miscellaneous
  • Solution for overwritten stack in 48k SNA filesIt has been known for quite some time now that the 48k SNA file format has one serious fault, which is described in the file formats section on the W…

    ... data (or program code) in RAM and therefore the snapshot doesn ... Spectrums the programmers were using RAM much more carefully and they ...
    Anonymous Anonymous October 2002 Emulators
<1…567891011…34>

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