World of Spectrum
  • Categories
  • Discussions
  • FAQ
  • Sign In
Home › Search
Title Search
@title beer Word 'beer' in title
User Search
  • @user admin Only posts by Admin
Text Search
  • @body beer Word 'beer' in the text
Phrase Search
"Hello World" Exact phrase match
Exclude Terms
  • car -red Search cars that are not red
"Or" Searches
  • honda | bmw 'honda' or 'bmw' results
Multi-Field
@(title,body) hello Both contain 'hello'
WildCard
  • hond* civ* Match all with an astrix
Combination
  • @title bmw @user admin
See more supported syntax examples
Search Again :: Adv Search 1000 results in 0.010s
<1…15161718192021…34>
  • Spectrum issue 4SI have an almost completely depopulated issue 4s board. Wondering what to do, repairs or spares? I hooked it up and the voltages are off, 5v is fi…

    ... find these?

    TR4 and TR5 are fine and so is ...
    patzik patzik August 2016 Hardware
  • Upper memory issueZX Spectrum 48K, issue 2, boots fine. Lower RAM OK. When tested with the new test ROM in the Diagboard, for all upper RAM tests "FAIL" is shown. I…

    ... boots fine.
    Lower RAM OK.
    When tested with ... Diagboard, for all upper RAM tests "FAIL" is shown ... for the lower RAM, are the voltages:
    4116 pin 8: ... 12V, very low)
    4116 pin 1: -4,68V ( ... tolerances of -5V)
    4116 pin 9: 4,99V (ok ...
    georgedb georgedb September 2016 Hardware
  • Spectrum +2 (grey): Mod- and operation- related advices needed.Dear Sirs and Ladies, Please welcome a newbie to the “World of Spectrum” (both to the forum and, well, metaphorically). I’ve recently purchased a…

    ... Ω resistor;
    2. U-turned TR4 (composite signal is not distorted ... . Do I have to reverse TR5 and TR6 too?

    Volo Volo September 2016 Hardware
  • Spectrum 48k won't start any software but passes all RAM testsI have a rubber key 48k which will not start any software - it appears to work perfectly right up until the end of the tape and the program would sta…

    ... a problem with the upper RAM however on running the soak ... minutes. I also performed the RAM test detailed here http://www ... longer or look for non-RAM related issues?
    britain4 britain4 October 2016 Hardware
  • Creating a POK from RAM or binary.Don't know if this is the right category or not but here goes. I'm working on a bug fix for a game, it's a few hundred bytes worth of custom code …

    ... said file from a set RAM location or a binary? I ...
    Ersh Ersh October 2016 Development
  • Spectrum 48+ 4S - Upper RAM issue, and now a self-created problem!I recently picked up a known-flaky spectrum off eBay, to have a bit of fun fixing it and reliving youth. It was labelled as 'keyboard duff, shows…

    ... tape version of Balford's ram test diagnostics said the whole ... of upper RAM was faulty (check all ICs ... 've removed all the upper RAM ICs, replaced with sockets and ... .

    Given the lower RAM used to be okay, and ...
    Paulcatchpole Paulcatchpole December 2016 Hardware
  • help with my original issue 3b from when i was a teen. possible lower ram fault.hello, well ive tried to fix my old speccy, but haven't made much progress. could you help me out with some diagnosis. the fault occurred about…

    ... before I order a lower ram set.
    cypher007 cypher007 December 2016 Hardware
  • zx.zigg.net lower RAM replacement module: Still shipping?Hi everyone I'm trying to resuscitate my 48k issue 6a, and I bought the lower RAM replacement module from zx.zigg.net. The paypal payment went thr…

    ... , and I bought the lower RAM replacement module from zx.zigg ...
    Mikelone Mikelone January 2017 Hardware
  • RAM questionI've been meaning to upgrade my desktop pc's ram for ages now as the 4GB it has isn't cutting it anymore but im confused about what ram my motherboar…

    ... my desktop pc's ram for ages now as ... but im confused about what ram my motherboard will support.< ...
    The motherboard has 4 ram slots 1 taken by the ... i dont know what ram is compatible and what ...

    in its ram section for the motherboard but ...
    festershinetop festershinetop March 2017 Chit chat
  • ZX81 Ram pack problemI got recently Sinclair 16k memory expansion for my ZX81, but for some reason it will not work. The computer itself is operating normally without hi…

    ... years.
    Of course, maybe ram pack is faulty, but it ...
    Pegaz Pegaz March 2017 Hardware
  • 128K Toastrack (Noisy video output)Hello there guys! Need all of yours guides and advices. Some time ago I bought a nice looking 128K from eBay (motherboard v6K) and put it aside for…

    ... new ones, 7805 voltage regulator, TR4 and TR5 transistors.
    So I ...
    PheeL PheeL April 2017 Hardware
  • 48k Speccy with Ram Turbo, Dust Cover and a couple of games!I'm selling one of my Spectrums on Ebay, and along with it a dust cover, a Ram Turbo Interface for cartridges and joysticks and a couple of Codemaste…

    ... it a dust cover, a Ram Turbo Interface for cartridges and ...
    deadpan666 deadpan666 June 2017 Sales
  • ZX Spectrum+ showing 16K of RAMHello again, as the title says my ZX Spectrum+ is showing only 16K of RAM instead of 48K when running a memory check. [url="http://www.1000bit.it/su…

    ... + is showing only 16K of RAM instead of 48K when running ... how to identify the faulty RAM chip, but I seriously have ...
    vale vale July 2017 Hardware
  • Troubleshooting RAM IC's on Spectrum +2 Grey?Got myself a grey +2 but at startup it shows something very similar to this: [img]https://preview.ibb.co/mmai5F/2_Ram_Fault.png[/img] I also su…

    ... also suspect there is a RAM fault but how can I ...
    Renegade Renegade July 2017 Hardware
  • Third-party ZX81 RAM packsOne of the things that's previously held me back from fishing for a ZX81 on eBay - other than "will the ULA on this machine sold as 'untested' be com…

    ... getting hold of a 16K RAM pack. Now, even back in ... of the existence of other RAM packs that weren't the ... (at least try to) eliminate RAM pack wobble, but then there ... time it had a working RAM pack I was [i]five ...
    The Mighty Dopethrone The Mighty Dopethrone November 2017 Hardware
  • MGT Sam Coupe BIG JOBLOT!!! 22 Disks, 3 manuals, 1MB Ram Expansion + Midi Cable!Direclty from my personal Sinclair collection that never end... ...MGT Sam Coupe BIG JOBLOT!!! 22 Disks, 3 manuals, 1MB Ram Expansion + Midi Cable…

    Direclty from my personal Sinclair collection that never end...

    ...MGT Sam Coupe BIG JOBLOT!!! 22 Disks, 3 manuals, 1MB Ram Expansion + Midi Cable!

    https://www.ebay.co.uk/itm/173022113295

    Have a nice bid ;)
    ranma_simon ranma_simon December 2017 Sales
  • Testing ram memory of DivIDE / DivMMCHere is new utility for testing DivXXX ram memory: [url="http://velesoft.speccy.cz/zx/divide/software/divramka.zip"]velesoft.speccy.cz/zx/divide/sof…

    Here is new utility for testing DivXXX ram memory:
    [url="http://velesoft.speccy.cz/zx/divide/software/divramka.zip"]velesoft.speccy.cz/zx/divide/software/divramka.zip[/url]
    velesoft velesoft December 2017 Hardware
  • Character wobbleHello, I have an Issue 2 board which shows vertical character wobble. This happens for a few minutes followed by a few minutes of character sta…

    ... had the effect of destroying TR4 and causing the
    -5V ... fail (taking out the lower RAM) and also causing the 12V ... to rise to 20V once TR4 was replaced.

    All ...
    roganjosh roganjosh December 2017 Hardware
  • ZX Spectrum Issue 4S composite video fuzzy (horizontal blur)Dear people of WoS, Thank you very much for taking the time to read. I have an Issue 4S I recently acquired and planned to fix up as a gift for a…

    ... Future play ManicMiner
    Test RAM with Brendan Alford's "ZX ... component swapping:
    - TR1, TR2, TR4, TR8, TR9
    - IC 14 ...
    handsfelloff handsfelloff January 2018 Hardware
  • sam coupe with external 1mb ramvelesofts site has snaper disks: https://velesoft.speccy.cz/sam_zx128.htm when you use masterdos to detect the external 1mb of ram interface th…

    ... detect the external 1mb of ram interface then the snaper emulator ... lets you select the fast ram and the zx spectrum game ... uses this ram above 32768 this gives you ...
    rogerjowett1 rogerjowett1 June 2018 New game ideas
  • Faulty as sprctrumsHi guys I have just received a dk tonics keyboard and to my surprise there is an issue 6 as spectrum inside and an interface 1 yay me but I am ge…

    ... I am to take as tr4/5 to be replaced
    ram).
    caver99 caver99 January 2019 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…

    ... managed to trace and fix TR5 as a culprit, which restored ... to be anything wrong with TR4, although there could be (I ... are made, or why fixing TR5 fixed that but not the ...
    colourclash colourclash May 2019 Hardware
  • 48K Issue 2 RAM issuesI have 48K issue 2 board (I've checked, the upper memory is present!). It's not very well. I've not attempted to diagnose one before, so please bear …

    ... are only in the upper RAM as it will actually boot ...
    kurbeco kurbeco August 2019 Hardware
  • The Complete List Of The Causes Of Lower Ram Failure?Well the aim is to get a comprehensive list.I ask this because I know very little about it . I know that failure of "power supply" related capacitors…

    Well the aim is to get a comprehensive list.I ask this because I know very little about it . I know that failure of "power supply" related capacitors can do this . But I suspect there are loads of other ways to damage lower RAM ICs? Any ideas?
    harriusherbartio harriusherbartio March 2020 Hardware
  • 12V missing on an issue 3I’ve been working on an issue 3 Spectrum +. It shows thin distorted vertical stripes on bootup. +5 and -5V are all right but the 12V line measures ro…

    ... the 4116s and changed the TR4 and TR5 to no avail. I ...
    protek protek July 2020 Hardware
  • 4116 4164 DRAM testersSaw this and thought it may be of interest. https://www.ebay.co.uk/itm/DRAM-TESTER-for-4116-ZX-Spectrum-48k-other-retro-computers/154054505831?_tr…

    ... .uk/itm/DRAM-TESTER-for-4116-ZX-Spectrum-48k-other-retro ...
    moggy moggy August 2020 Sales
  • zx spectrum display corruption .. with lower ram module installed[img]https://photos.app.goo.gl/Gu6rjC5v21sZxwTX9[/img] [img]https://photos.app.goo.gl/FznVw8SkbbhWn5mh7[/img] another specie question : i have …

    ... video corruption, it has lower ram module fitted.. can get it ... it shows lower ram as good and upper ram not detected although ... start digging at the upper ram, or the 4 logic chips ... that drive the upper ram.. i am presuming that one ...
    mark8bit mark8bit January 2021 Hardware
  • Paging for 64Kb of Video Ram??? What is the best way to page this?Hi all, I'm just putting together a concept card for a "Loki" style of video card, which supports shadow ( so it fits a normal Speccy ) and also t…

    ... single 48K video page with RAM relocated to the ROM space ...
    cj7hawk cj7hawk October 2021 Hardware
  • Built a ZX Spectrum that works, but can't get the upper RAM to work?Like the title says I finished my Spectrum 3B board, and it boots, but it doesn't see the upper 32k of RAM. When it boots, the lower 16k works f…

    ... see the upper 32k of RAM.

    When it boots ... programs and even run a RAM diagnostic. Basically, tells me that ... all the associated logic, and RAM chips, with no effect. I ... direct connections between the upper RAM and associated logic, and I ...
    DistantStar001 DistantStar001 June 2022 Hardware
<1…15161718192021…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • European Software Titles with an English version
    harriusherbartio on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
  • +3 Disk drive motor
    AndyC on April 21
  • Celebrity deaths...
    mel the bell on April 20

HitBox

Word Docs Hits
ram 12.6K 21.4K
4116 933 1.4K
tr4 886 1.3K
tr5 555 806

Related Threads

  • Wanted 10 - 4116 Ram ChipsHi<br /> Can any one help I am trying to get hold of 10 4116 RAM chips for a 48K Spectrum. Does any one know who might stock them. I can get a minim…
  • Source of 4116 ramSomeone on eBay was selling 500 pieces of 4116 ram. The auction ended without bids, but he's willing to sell it in lots of 50 now. Someone in Spain a…
  • 4116 ram chipsI need some ram chips to fix my 48k + issue3b, I have done the composite video mod and it works, now i just wanna play games on it but its stuck on r…
  • Inefficient code in ROM, from ram-check to RAM-DONEHere is the inefficient code:<br /> <br /> [CODE]<br /> ;; ram-check<br /> L11DA: LD H,D ; Transfer the top value to the HL registe…
  • Help changing TR4 and TR5Hi all!<br /> Please, help me! :)<br /> I think I'm not understanding the correct pins of TR4/TR5 and the transistors.<br /> So, if anyone know the c…
  • 4116 Ram chip replacements?Hello. I am in the work of gathering replacement parts for my speccy 48k. And I would like to know what chips is good replacement for the 4116 ram ch…
  • 16K/48K Lower RAM (4116) replacement.You may want to read [URL="http://www.worldofspectrum.org/forums/showthread.php?t=37957"]this thread[/URL] for background information on the quest t…
  • 4116 Ceramic Ram ChipsHi all,<br /> <br /> I have a few 4116 Ceramic Ram Chips to sell.<br /> <br /> If you have any interest, please PM.<br /> <br /> Greetings,<br /> Ret…
  • TR4 or TR5?My issue two gives horizontal bars on bootup. Flicking reset takes it to copyright screen though. I measured voltages and got 4,9V, 11,99V and -4,3V.…
  • 65x used but tested and working 4116 RAM chipsFor any repairman: 65x 4116 chips, used but tested and working.<br /> Different brands, but ITT and STC mainly.<br /> <br /> ?25 + postage.<br /> <br…

Related Searches

  • rom to ram
  • modern ram
  • 4116
  • disable uper ram
  • disable upper ram
  • toastrack 12v tr4
  • opus rom ram size
  • opus rom 8k ram 2k
  • opus rom 8kb ram 2kb
  • ram upgrade
  • shadow ram
  • page 7 shadow ram
  • z88dk free ram
  • tr4 calibration
  • issue 2 color tr4 calibration
  • 2a ram
  • ram speed
  • dc converter tr4 tr5 coil
  • converter tr4 tr5 coil
  • ram 4116

Copyright © 2024 World of Spectrum