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  • For Sale?? Offers? Spectrum ZX81, PSU & 16k RAMHi all I've got a ZX81, 16k RAM pack & original PSU here I purchased sadly it won't work with my TV and I don't want to hack it apart to make compos…

    ... 've got a ZX81, 16k RAM pack & original PSU here ...
    dreamscape dreamscape August 2014 Sales
  • RAM issue for potential 48k buy?Hi guys I've got a 48k in my sight for ?20 but... it has an issue: [QUOTE]"I tested the computer and only displayed a distorted screen. Coloured …

    ... />
    Would this be faulty RAM chips? I've seen similar ...
    dreamscape dreamscape August 2014 Hardware
  • Wanted: ZX81 boxed with 16k RAM PackI'm looking for a clean, working and good condition ZX81 with original Sinclair 16K RAM Pack. Would prefer if it was in a box. Oh and if you have 3D …

    I'm looking for a clean, working and good condition ZX81 with original Sinclair 16K RAM Pack. Would prefer if it was in a box. Oh and if you have 3D Monster Maze that would be the icing on the cake, thanks.
    sj_howlett sj_howlett August 2014 Wanted
  • Is my ZX81 RAM Pack OK?Hi guys I've just taken my 16k RAM pack apart to give it a clean inside and out and i noticed these strange burn type marks!? [IMG]http://s7.postim…

    ... 've just taken my 16k RAM pack apart to give it ... this burn marks!? Is my RAM pack damaged I haven't ...
    dreamscape dreamscape August 2014 Hardware
  • 48K Ram Check Command not workingI am trying to repair my Spectrum 48k. It is having issues loading games, sometimes they load all the way to launch and then the speccy resets. Oth…

    ... points me towards checking the RAM.

    I have entered ...
    wep855 wep855 August 2014 Hardware
  • Spectrum stuff for sale (ZX81, RAM pack, Tapes... etc)Selling the following: [IMG]http://s26.postimg.org/uk0ntdsq1/IMG_20140902_205737.jpg[/IMG] [IMG]http://s26.postimg.org/ronkmioq1/IMG_20140902_20575…

    ... original too)
    ZX81 16k RAM pack - Working
    Spectrum tapes ...
    dreamscape dreamscape September 2014 Sales
  • Early ZX80/81 RAM Pack???Hey all I got given this RAM pack... It doesn't work (i know why now) but compared to my RAM pack this one is really strange... Is this a ZX80 RAM p…

    ... />
    I got given this RAM pack... It doesn't work ... now) but compared to my RAM pack this one is really ... strange... Is this a ZX80 RAM pack or something as it ...
    dreamscape dreamscape September 2014 Hardware
  • Pictures of 48k ZX Spectrums Showing the Important Voltages[SIZE=6][B]Pictures of 48k ZX Spectrums Showing the Important Voltages[/B][/SIZE] [URL="https://farm4.staticflickr.com/3841/15005543009_7bcf3b3031_o…

    ... +12V (for the "lower" 4116 16k RAM chips, bottom left of the ...
    1024MAK 1024MAK September 2014 Hardware
  • Issue 6 repair with a twist...(Starting with a slight grump - the forum ate my first attempt at this so this'll probably end up being a bit terse :)) I got a Issue 6 48K machine …

    ...
    I suspected faulty upper RAM trashing the stack, and this ... reporting both lower and upper RAM were healthy.


    One swift 4116 replacement later, and the machine ... then reinitialised, and the RAM being tested is compared against ...
    balford balford September 2014 Hardware
  • The complete Manic Miner RAM disassemblyHot on the heels of the [url="http://skoolkit.ca/disassemblies/jet_set_willy/"]Jet Set Willy disassembly[/url], here is [url="http://skoolkit.ca/disa…

    ... /manic_miner/"]The complete Manic Miner RAM disassembly[/url] (Bug-Byte version ...
    SkoolKid SkoolKid October 2014 Announcements
  • Interface 1bis RAM Drive modificationAll Interface 1bis users I hope I am not interfering with Dan, but I saw on his site that he has a RAM Drive upgrade/modification for the Interface …

    ... site that he has a RAM Drive upgrade/modification for the ... have an on-board 128K RAM drive, the user must install ...
    Pierre Pierre October 2014 Hardware
  • Issue 1 oddityHello to everybody, I have a very first under my hands - a broken Issue 1. Apart from the classic "broken lower RAM" syndrome which will be easily t…

    ... from the classic "broken lower RAM" syndrome which will be easily ... blue. Even Paul Farrow's RAM tester shows its white bars ... is operative after the obvious TR4 replacement.

    Composite signal ...
    Falco-F8L Falco-F8L November 2014 Hardware
  • Issue 2 Upper Ram, Loading & ResettingI have a 48k Issue 2 Speccy and for the life of me can't track down what the problem is with it. I initially thought that some of the uppe ram ic's w…

    ... that some of the uppe ram ic's were faulty ... on to desoldered the upper ram ic's, socketed the ... board and replaced the ram with known good chips. ... replaced all the upper ram with known good ram from another Issue ... cant now be the upper ram as I swapped and ...
    retrogamemart retrogamemart December 2014 Hardware
  • Ram Turbo Interface with Kempston and Sinclair/Amstrad joysticksHi! Do you know how to plug and use two different joysticks with the Ram Turbo interface? [url]http://www.worldofspectrum.org/infoseekid.cgi?id=1000…

    ... two different joysticks with the Ram Turbo interface?

    [url ...
    DaRkHoRaCe DaRkHoRaCe January 2015 Hardware
  • 80K RAM UpgradeAn 80K RAM upgrade has been listed on sellmyretro.com (not by me). It is based on the one originally designed by Sandy Electronics and has their p…

    An 80K RAM upgrade has been listed on ... /details/NEW-SCT-MODULE-EXPANSION-RAM-80K-FOR--ZX-SPECTRUM-4119 ...
    rwap rwap January 2015 Sales
  • Issue 1 16K RAM bankFolks, I recently had a chance to fix a couple of Issue 1 boards, and learned the hard way that the chips in the 16K RAM bank have a different place…

    ... the chips in the 16K RAM bank have a different placement ... from 2 up have the ram chips lined up the most ... meaningless reports from the Fruitcake RAM tester, I finally checked all ...
    Falco-F8L Falco-F8L January 2015 Hardware
  • 128K RAM tester as .TAP?I was sure that I've seen a RAM tester that can be loaded with e.g. DivIDE or DivMMC EnJOY! as .TAP. But I can't find it (been searching through the …

    ... that I've seen a RAM tester that can be loaded ... 128K machines, and if lower RAM works fine, and there is ... a small error in upper RAM.

    I have a ...
    bverstee bverstee January 2015 Hardware
  • Wanted: RAM Turbo InterfaceHi guys I am on the lookout for a RAM Turbo interface so anyone has any going spare then please give me a heads up. Cheers

    Hi guys

    I am on the lookout for a RAM Turbo interface so anyone has any going spare then please give me a heads up.

    Cheers
    CU_AMiGA CU_AMiGA January 2015 Wanted
  • Spectrum +2 (grey) RAM issueHi, I?ve got a ZX Spectrum +2 (grey) with what I think is a RAM issue. I used to be able to load games very reliably by playing converted TAPs and …

    ... what I think is a RAM issue.

    I used ... that device is a 128K RAM test firmware.

    When ... [/url], page 4) means that RAM page 5 has an issue ... the PCB is for which RAM page?

    I?m ...
    CRNorris CRNorris February 2015 Hardware
  • What influence the number of stripes during initialization?Hi for All! After some adventures, with other rare old computers I'm back here to my favourite forum. :) Recently I got some ISSUE 2 boards from Ben…

    ... ROM. The RAM chips are different: NEC and ITT 4116 chips were ...
    jimre jimre February 2015 Hardware
  • Loads of Microdrive cartridges on Ebay plus Vortex RAMI?ll be selling three bundles of eight Microdrive cases with four, used cartridges each, means 32 cartridges per bundle, here?s one of them [img]http…

    ... an untested Vortex SP 512 RAM expansion with CPU and ULA ...
    schombi schombi February 2015 Sales
  • Another silly hardware idea - RAM Pack adaptorHow about a mini bit of PCB that adapts ZX81 RAM Packs to replace the address space of the Spectrum's ROM? I guess practically you'd need a way to…

    ... of PCB that adapts ZX81 RAM Packs to replace the address ... well just design your own RAM board.

    Could have ...
    joefish joefish September 2015 Hardware
  • Turbo RAM Glitch or feature ?I have been testing a Spectrum [url="http://www.worldofspectrum.org/infoseekid.cgi?id=1000328"]worldofspectrum.org/infoseekid.cgi?id=1000328"]RAM Tur…

    ... .org/infoseekid.cgi?id=1000328"]RAM Turbo Interface[/url].

    RMartins RMartins September 2015 Hardware
  • Testing a RAM packI had my Spectrum + today which is working, but i also had a ZX Spectrum 32k RAM Pack and i wanted to test it. Is there anyway i can test this on the…

    I had my Spectrum + today which is working, but i also had a ZX Spectrum 32k RAM Pack and i wanted to test it. Is there anyway i can test this on the Spectrum + and if so how ?

    thanks
    morcar morcar October 2015 Hardware
  • 48K Issue 3B ROM to EPROM methodsHi folks, While fixing up a completely dead Commodore PET I needed a way of testing the 4116 RAM chips that make up its 32K, some googling found a…

    ... a way of testing the 4116 RAM chips that make up its ...
    witchy witchy December 2015 Hardware
  • Testing 4116 type DRAMsHappy New year All! I'm managed to find some time to repair some more Spectrums :) woo hoo. I have a couple with busted lower RAM, Sooo, I appr…

    ... a couple with busted lower RAM, Sooo, I appreciate I could ... a swanky ZX Spectrum Lower RAM Replacement Module, but I think ... feasible to actually make a ram module replacement with ease?
    Korinel Korinel January 2016 Hardware
  • spectrum 48k issue 3b coloured blocksI have pucked up a nice looking plus but when powered on get black or yellow border and random coloured blocks on screen, I have taken keyboard off a…

    ... as for the ram the 8 chips are 4116 and if they ...
    caver99 caver99 February 2016 Hardware
  • Issue 3B turning offI'm trying to save a Spectrum Issue 3B. I restored the power supply section, changing the 7805, TR4, and TR5, besides all electrolytic capacitors. No…

    ... section, changing the 7805, TR4, and TR5, besides all electrolytic capacitors. Now ...
    is0eir is0eir March 2016 Hardware
  • 48K Issue 6a wobbly and flickering TV outputHi folks, Found an untested issue 6A Spec whilst tidying up and it had a warranty sticker on it from a past repair which seemed to be a socketed L…

    ... at least a pair of 4116 lower RAM chips. TV output was ...
    witchy witchy July 2016 Hardware
  • Speed (nano seconds) of memory chips ZX SpectrumThe ZX Spectrum uses 4116 memory for the lower memory, which can be replaced by other sorts or a whole, modern, module, but when searching for 4116 m…

    The ZX Spectrum uses 4116 memory for the lower memory, ... , module, but when searching for 4116 memory, what speed in nano ... PCB) because half of the RAM was faulty, but how many ...
    georgedb georgedb August 2016 Hardware
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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.…
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