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Search Again :: Adv Search 1000 results in 0.014s
<1234567…34>
  • Broken ram or what?Hi! I own ZX Spectrum 48K. When i run command PRINT PEEK 23732 + 256 * PEEK 23733, I should get answer 65535? But i get 49151. In my machine the upp…

    ... /> I also have a test program which can test ram. It also says ... that machine has broken ram. And ... if i remove upper memory chips, test program ...
    lillaolle64 lillaolle64 July 2010 Hardware
  • Spectrum 128k +2 grey and EPROMhi all, i am try to fix my spectrum, right now i am little on dead end... i think a good idea is to test RAM/ROM on the Spectrum so i will try to c…

    ... a good idea is to test RAM/ROM on the Spectrum so ... to load

    a test RAM software from here [url]http ...
    xaris_sm xaris_sm March 2013 Hardware
  • +2 Black Boot Rom Selectionhello, i have a custom ROM with a test RAM software burned in that i have used before to troubleshooting ram problems on my +2 grey, is there a…

    ... a custom ROM with a test RAM software burned in that i ... have used before to troubleshooting ram problems on my +2 grey ... can use this custom 27c256 ram tester on my +2 black ... to check for ram problems?
    i know that ...
    xaris_sm xaris_sm June 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…

    ... what I have done:
    Test on another TV also with ... Divmmc Future play ManicMiner
    Test RAM with Brendan Alford's "ZX ... closely resemble the ‘working’ IC test voltages show on the WOS ...
    handsfelloff handsfelloff January 2018 Hardware
  • 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…

    ... ? Might be a good test.
    RAM works. Memory test is fine... just ... works as this isn't RAM dependant.. I presume.

    Spirantho Spirantho September 2005 Sinclair Miscellaneous
  • Spectrum Issue two problemI managed to bring back to life a issue two spectrum (at least the power supply cirquit). The screen is now crystal clear (after replacing all the el…

    ... a couple more things than RAM, but if the machine ... makes the CPU fill all RAM with 02 hex, then ... , then you have bad lower RAM.

    I had ... the CPU would not even test RAM) or even the EPROM I ... replaced the lower eight 16Kx1 RAM chips with a single 64Kx8 ...
    Marcelo Marcelo January 2007 Hardware
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... - it HAS to be upper RAM or A15

    I ... me a short routine to test RAM.
    DEATH DEATH March 2007 Hardware
  • Jetpac questionHi all, I just bought a copy of Jetpac off of Ebay and I'm having problems. To start, I'm trying to play it on an issue 2 Speccy with Interface 1, 2 …

    BASIC programs that test RAM are really slow and ... search, I found two RAM-testing programs today written ... yet find one called "48K RAM test" - which would be more ... parts of RAM (like the system variables), test that area ... point, in order to test the area it is ...
    Digital Prawn Digital Prawn January 2009 Games
  • ZX Spectrum 48k issue 3b power problem?Hi :) I was lucky enough to find a couple of ZX Spectrums at a car boot sale yesterday. I spent the evening fiddling about with one (issue 2) and t…

    ... do I check whether the ram 4116 chips are working okay ... 't know any method to test RAM only with a multimeter. Even ... ( Winston) that it makes some RAM test and help me in my ... EPROM with Sinclair rom test and fruitcake 128K RAM test.

    Bye ...
    Jose_Leandro Jose_Leandro April 2011 Hardware
  • Spectrum 128K +2 problemhello, i am try to repair my spectrum 128k +2 grey, i remove all ram chips and i have some new ones spares, now i have remove all ram chips, i want …

    ROM to test RAM [URL="http://www.fruitcake.plus. ...
    1024MAK 1024MAK March 2013 Hardware
  • Spectrum 128K +2 problemhello, i am try to repair my spectrum 128k +2 grey, i remove all ram chips and i have some new ones spares, now i have remove all ram chips, i want …

    [QUOTE=1024MAK;687086]ROM to test RAM [URL="http://www.fruitcake.plus. ...
    xaris_sm xaris_sm March 2013 Hardware
  • Spectrum 128K +2 problemhello, i am try to repair my spectrum 128k +2 grey, i remove all ram chips and i have some new ones spares, now i have remove all ram chips, i want …

    ... burn an eprom with the test ram rom from here ,[url]http ... Interface2_RC_New_RAM_Tester.htm[/url]

    test seems to be working but ... am unfamiliar, contended or not ram, pages, data line and ... up the spectrum?

    test ram rom file was 8k,edited ...
    xaris_sm xaris_sm March 2013 Hardware
  • Spectrum 128K +2 problemhello, i am try to repair my spectrum 128k +2 grey, i remove all ram chips and i have some new ones spares, now i have remove all ram chips, i want …

    ... burn an eprom with the test ram rom from here ,[url]http ... Interface2_RC_New_RAM_Tester.htm[/url]

    test seems to be working but ... am unfamiliar, contended or not ram, pages, data line and ... up the spectrum?

    test ram rom file was 8k,edited ...
    xaris_sm xaris_sm March 2013 Hardware
  • another faulty zx spectrum +2 to fix!!!Hello to all, I'm new here... I have got a faulty +2 (gray) and start to try fix it... I have read the treads of xaris_sm and Pluto63 as background…

    little update:

    test ram passed, now is sure 100% ...
    emilen72 emilen72 May 2013 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…

    ... store a test program in the battery backed RAM, but again ... ZXC4 with a ROM based RAM test. It's not cheap, ... more than just run a test program.
    Links:- http ... can also be used to test RAM as well as be ... zx-diagnostics
    That test program can run on any ...
    1024MAK 1024MAK December 2015 Hardware
  • +2 Black Boot Rom Selectionhello, i have a custom ROM with a test RAM software burned in that i have used before to troubleshooting ram problems on my +2 grey, is there a…

    ok you meant to use the pinout from the Spectrum Edge Connector top\bottom

    and direcly connect the custom 27c256 matching the pins, this way the spectrum will boot from the custom 27c256 and run the test ram software, right?
    xaris_sm xaris_sm June 2017 Hardware
  • Test single ram chips?Is it possible to test single ram chips? Micky

    Is it possible to test single ram chips?


    Micky
    -Micky -Micky January 2010 Hardware
  • Ram test / diagnostic software for 128k?I need a ram test program urgently (as I have to bring this machine into the party place tomorrow) yet I couldn't find any in infoseek by typing "ram…

    I need a ram test program urgently (as I have ... infoseek by typing "ram test" :) And most of the test suites based on ... .

    Are there any ram test suite which runs from ...
    Arda Arda December 2012 Sinclair Miscellaneous
  • Sinclair Spectrum System Test Rom CartridgeSinclair Spectrum System Test Rom Cartridge. [url="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=50224&item=8106735040&rd=1&ssPageName=W…

    Sinclair Spectrum System Test Rom Cartridge.

    [url=" ... Test, a Sound Test, a Colour Test, a Flash Test, a RAM Test and a Soak Test ... interpret the results of each test.

    The cartridge itself ...
    wadsterboy wadsterboy May 2004 Sales
  • RAM Music MachineBoxed RAM Music Machine Sampler (for 48K, Plus, 128K, Plus two) includes the tape, microphone, manual, even original mic stand! I last got this wor…

    Boxed RAM Music Machine Sampler (for 48K, ... to load and I cannot test it anymore as I only ... />
    So, I cannot currently test the hardware or software but ...
    racingroom racingroom March 2005 Sales
  • 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…

    ... which is probably normal since ram
    test takes a bit more ... like 1 PRINT
    "test" - it works. But if ...
    Then I did a test where I moved the RAMTOP ... I did a small memory test program above RAMTOP like ... get a long memory test and couldn't enter ...
    Tom-Cat Tom-Cat September 2005 Sinclair Miscellaneous
  • R Register, Contended RAM and ClonesHi. I've had a quick look at the CSS FAQ but didn't spot quite what I'm looking for (also the CSS FAQ doesn't have much detail of the clones - there …

    ... is the effect of contended RAM on the R-register? I ... run any code in contended RAM, but I do make several ... , but then without the contended RAM the HALT would take place ... /> Of course I could just test this in an emulator, but ...
    icabod icabod July 2006 Development
  • RAM Test ROM?Found a link to this: [url]http://www.retroreview.com/iang/TestSpec4.zip[/url] in another thread, and fired it up in SPIN, but I have no clue how to…

    ... this to determine which physical RAM chip needs replacing, and/or ...
    trellis trellis September 2006 Hardware
  • Another badly behaved RAM upgradeI have a 48K issue 4A board (yellow it is) that was a 48K machine from new, but only reports 16K working with the Sinclair ZX Test ROM in an Int2. H…

    ... Have done the whole poke test and it comes back ... sockets and installed all new RAM. Same problem!

    RAM upgrade, they all check ... thats the whole of the RAM upgrade chippery tested!
    ... just coz its an easy test - same problem - only ...
    Womble Womble November 2008 Hardware
  • RAM Turbo on +2AHello Spectrum-fans, does anybody know if the RAM TURBO Joystick interface (this with cartridge slot like the INTERFACE2) can be used with a +2A? I …

    Hello Spectrum-fans,

    does anybody know if the RAM TURBO Joystick interface (this with cartridge slot like the INTERFACE2) can be used with a +2A? I don?t want destroy a machine to test it.

    Regards

    Thomas
    Speccyman Speccyman June 2009 Hardware
  • 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…

    I need some ram chips to fix my 48k + ... replace the lower ram chips. I can't test voltage but plan ...
    rustyredline rustyredline January 2010 Wanted
  • ZX Spectrum 48K clone and test resultsHi! This is my first post, so, first of all, I'd like to say hello to the whole community! I am Alessandro Dorigatti from Italy and I'm developing …

    ... the cores can initialize a RAM block uploading a ".TAP" file ... .

    The first failing test is IRContention; I will try ... the text shown by the test and they are in the ...
    adorigatti adorigatti July 2011 Hardware
  • 128K+2A/+3 RAM layoutDoes anybody know how physical RAM is mapped to ZX 128k+2a/+3 address space ? There are four 64Kx4 chips IC4-IC7. IC4-IC5 seems to be contended (vide…

    Does anybody know how physical RAM is mapped to ZX 128k+ ... be contended (video RAM). It would mean RAM banks 4-7
    RAM test program, can be on ROM ...
    kpuchatek kpuchatek July 2011 Hardware
<1234567…34>

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  • RAM Test ROM?Found a link to this: <br /> [url]http://www.retroreview.com/iang/TestSpec4.zip[/url]<br /> in another thread, and fired it up in SPIN, but I have no…
  • Test single ram chips?Is it possible to test single ram chips?<br /> <br /> <br /> Micky
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