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 0.015s
<1234567…34>
  • Spectrum lost upper memoryHi again, I have a Rubber key Spectrum(issue 4S) which lost it's whole upper memory. It's worked okay, but i forgot it on over last night. My son wa…

    ... ) which lost it's whole upper memory. It's worked okay, but ... another Spectrum which had also upper memory problems. So i wrote PRINT ... result 32767. This mean that upper memory is off. I loaded a ... game.
    Where is my upper memory?
    lillaolle64 lillaolle64 September 2010 Hardware
  • Whole upper memory lostHi! I own a rubber key Spectrum with 48K RAM. Suddenly it lost it's whole upper memory. All diagnostic programs says that it's 16K model with workin…

    ... it lost it's whole upper memory. All diagnostic programs says ... which also have had upper memory problems and the diagnostic ... ram. After changing faulty upper memory chips they have worked fine ... Board is Issue 4S and upper memory chips are TM4532.
    < ...
    lillaolle64 lillaolle64 October 2010 Hardware
  • Spectrum 48K - upper memory MIAI have recently acquired a ZX Spectrum which, according to the sticker on the bottom, should be a 48K model. It's an Issue 3 board, with upper memory…

    ... an Issue 3 board, with upper memory chips (8xTI4532) and supporting logic ... does not see the extended memory. PRINT PEEK 23732 + PEEK 23733 ...
    unholy unholy February 2012 Hardware
  • Spectrum 48K - upper memory problemsHi I have a ZX Spectrum 48K issue 3B which does not see upper memory. On PRINT PEEK 23732+256*PEEK 23733 i got result 32767. POKE 32768,85 and PRINT …

    ... 3B which does not see upper memory.
    On PRINT PEEK 23732 ...
    Edward Edward May 2012 Hardware
  • Upper memory not available in issue 2A friend send me his issue 2 Spectrum for diagnosis. It boots okay but for some reason won't load games over 16kB. He sent also a Smart Card with int…

    ... diagnostics ROM, which failed the upper memory RAM test, suspecting IC25 and ... stays low.

    Both upper and lower memories have been ... A15 high to enable the upper memory and under which conditions? Any ...
    protek protek January 2017 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…

    ... the Diagboard, for all upper RAM tests "FAIL" is shown.
    It ...
    georgedb georgedb September 2016 Hardware
  • Problem with replacing all upper memory with 4164 chipsGuys, i have a problem with the high memory of a 4B issue. At first the board had OKI chips for high memory and one of them was faulty. Since its ea…

    ... a problem with the high memory of a 4B issue.
    memory and one of them was ... changed the wiring for the memory settings from OKI and H ... />
    If i insert the memory from a working speccy (with ...
    gtsamour gtsamour December 2007 Hardware
  • Replacing Upper RAM in 48KHi Folks Well, my fun continues :) After sorting the display issues with this machine I found I couldn't load software meant for 48K machines. Havin…

    ... here it looks like an upper memory fault.

    Before I ...
    spookt spookt July 2012 Hardware
  • Upper Memory LinksI've got an 1982 Issue Two Spectrum 48k with an upper RAM fault. I've narrowed down the faulty IC and I'm in the process of removing the 8 IC's, sock…

    ... Two Spectrum 48k with an upper RAM fault. I've narrowed ...
    retrogamemart retrogamemart September 2014 Hardware
  • 48K Upper memory issues?Having more issues with the 48K spectrum I just fixed that had the black screen in this thread [URL="http://www.worldofspectrum.org/forums/showthread…

    ... end.

    Ran the memory test
    PRINT PEEK 23732 ...
    whoremoan whoremoan November 2014 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…

    ... ZX Spectrum uses 4116 memory for the lower memory, which can be ... but when searching for 4116 memory, what speed in nano seconds ... if not within 20ns the memory is refreshed, the contents ... />
    Same for the upper memory:
    TMS4532-3 Texas Instruments ...
    georgedb georgedb August 2016 Hardware
  • Need some help repairing an issue 3 spectrumI am looking for some help repairing an issue 3 speccy, here's what I tried so far. The speccy is not booting up correctly, when using the diagnos…

    ... all lower ram ic's fail, the ic's however are ... and z80 made no difference. Upper memory and logic is not installed ...
    patzik patzik August 2016 Hardware
  • Memory and Replacement ULA modules.Thought you might like to see my future proofed 48k version 6A with some upgrades fitted. Has had the following... Recap. Traco Power TSR 1-2450 p…

    ... power regulator.
    Lower and upper memory modules from... http://zx.zigg ...
    RSwipeCA RSwipeCA August 2016 Hardware
  • Help with a TIMEX TC2048 and memory problemBought a 2nd hand Timex TC2048 but unfortunately I detected a problem with the machine which is preventing it from working properly. I believe it …

    ... was a fault with the upper memory (chips U8, U9, U10 or ... chips, placed sockets, inserted new memory chips and the result is ... .

    Is this a memory addressing problem? The machine doesn ... 't "see" the memory?

    Where should ...
    Renegade Renegade December 2017 Hardware
  • Repair my CZ2000 (Argentinian clon of Sinclair Spectrum)Hi! Does anybody know who can help me repairing my damaged Spectrum in Buenos Aires?. It works fine, but it has an upper memory failure, so it only …

    Hi! Does anybody know who can help me repairing my damaged Spectrum in Buenos Aires?. It works fine, but it has an upper memory failure, so it only recognizes 16K. Many thanks, Fernando
    FMOGETTA FMOGETTA May 2018 Updates
  • 4116 replaced by 4164 - "Noisy" paper?After I replaced my 4116's with 4164's and hooked them up to +5V, disconnected -5V and +12V, I have what looks like vertical lines in the paper, like…

    ... output impedance of the 4164 memory compared to the 4116. ... CPU is sufficiently low (or upper memory's output impedance is sufficiently ... CPU writes to lower memory and the ULA fail (and the machine ... said that, proper functioning 4164 memory shouldn't do this, ...
    Winston Winston June 2012 Hardware
  • 48K Upper memory issues?Having more issues with the 48K spectrum I just fixed that had the black screen in this thread [URL="http://www.worldofspectrum.org/forums/showthread…

    ... now managed to get the memory test program to load.

    Lower memory test failed after a few ... each and it didn't fail at all.
    [IMG]http ... .jpg[/IMG]

    The upper memory test I also ran a ...
    whoremoan whoremoan December 2014 Hardware
  • Upper memory not available in issue 2A friend send me his issue 2 Spectrum for diagnosis. It boots okay but for some reason won't load games over 16kB. He sent also a Smart Card with int…

    ... logic probe while running the memory test on the diganostic cartridge ... while it was testing the upper memory. The upper RAM walk and inversion ... , the march and random tests fail.
    protek protek August 2020 Hardware
  • Fruitcake Ram Tester - What does CORRUPTS mean?Hi All, Getting the message "Corrupts" as in "Corrupts 1" showing up on my test... What does this actually mean? The documentation on the site doe…

    ... that caused the chips to fail early.

    Maybe these ... of the era, as the upper memory above 512K to give the ... could have desoldered my 128K memory and put them in my ... so to buy new ones.. Memory was crazy-expensive at the ...
    cj7hawk cj7hawk August 2021 Hardware
  • Ways to use double buffering in basicI was meddling with woody's print stream code where you can print characters at any pixel location on screen. I was playing with 12 sprites, very ann…

    ... code to draw everything in upper memory area, but what about other ...
    Arda Arda November 2006 Sinclair Basic
  • issue 6a faultyHi All I got issue 6a pcb from ebay with status faulty pcb had bad voltages when I power up I changed tr4 ztx650 and all voltages got back on ic6 I h…

    ... white blocks
    I desoldered upper memory old chips oki3732, put new ...
    gorski gorski March 2009 Hardware
  • Spectrum dead: 8 vertical bars in alternating colorsI have been soldering on this basterd for a long time now. All IC's now have sockets (except the LM1889). I swapped all 4116's by types that are 100%…

    ... for the 32K upper memory and I removed the upper memory to avoid confusion ...
    georgedb georgedb September 2009 Hardware
  • DivIDE with gray +2 LOAD not workingI have 128+2 gray. It has faulty upper memory. PEEK 23733 shows 191. I wanted to use divIDE to load some test programs, but it always hangs when exec…

    ... +2 gray. It has faulty upper memory.
    PEEK 23733 shows 191 ... /> I suspect that not only memory can be faulty but also ...
    kpuchatek kpuchatek June 2010 Hardware
  • 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…

    ... 49151. In my machine the upper memory chips are in sockets so ... if i remove upper memory chips, test program says memory is OK.
    lillaolle64 lillaolle64 July 2010 Hardware
  • ZX Spectrum + Issue 6A Repair attemptHello everybody! I got ZX Spectrum + which doesnt work properly. On power up I can see color mosaic, then paper goes black and i can see thin red ba…

    ... see thin red bars from memory test. It stops here with ... ,TR4,TR5), so I suspect upper memory block. I dont know how ... from IC27 instead to disable upper memory block ?
    emes30 emes30 July 2010 Hardware
  • Spectrum hangs upWhat might be problem when my ZX Spectrum 48K (rubber keys) hangs up after few minutes play? It had memory problems but i changed (or an expert did i…

    ... an expert did it;)) the upper memory chips.
    There is no ... to load 48K game (before memory change it hanged up after ... game load) and memory test programs says that everything ...
    lillaolle64 lillaolle64 August 2010 Hardware
  • try to fix issue 4 board problemHi I try to fix speccy 48. All voltages are in place, ula 100% ok, cutted +5v from ic25 so far no luck. What next? ROM or upper memory? wojtek (i…

    ... luck. What next? ROM or upper memory?

    wojtek

    cyborg50 cyborg50 August 2011 Hardware
  • Dead Spectrum+Hi! Any suggestions where to start finding what's broken: Spectrum+ with issue 6A motherboard and nothing on TV. Top row of the upper memory chips g…

    ... TV. Top row of the upper memory chips gets very hot (all ... it usually does and lower memory chips are cool.
    I ... couple of Spectrums with broken upper memory chips but they gave a ...
    lillaolle64 lillaolle64 September 2011 Hardware
  • ZX Spectrum not working... issue 4S?Hi, I've bought a "new" broken ZX Spectrum +. The idea was to put an harlequin board inside, but for the moment I'm trying to put it in working order…

    ... every memory chip, the Z80 and the logic chips for upper RAM ... mounted in sockets.
    - Lower memory chips doesn ... there any chance that lower memory is still fine or I ... get some 4116s?
    - Is upper memory more resistant or it will ...
    Zup Zup February 2012 Hardware
<1234567…34>

Latest Posts

  • European Software Titles with an English version
    harriusherbartio on 12:06PM
  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on 11:21AM
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 11:01AM
  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade 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
  • 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

HitBox

Word Docs Hits
cz2000 47 55
upper 2.8K 3.7K
memory 21.8K 32.5K
fail 3K 3.3K

Related Threads

  • Problem with replacing all upper memory with 4164 chipsGuys, i have a problem with the high memory of a 4B issue.<br /> <br /> At first the board had OKI chips for high memory and one of them was faulty. …
  • Spectrum lost upper memoryHi again,<br /> <br /> I have a Rubber key Spectrum(issue 4S) which lost it's whole upper memory. It's worked okay, but i forgot it on over last nigh…
  • Whole upper memory lostHi!<br /> <br /> I own a rubber key Spectrum with 48K RAM. Suddenly it lost it's whole upper memory. All diagnostic programs says that it's 16K model…
  • Spectrum 48K - upper memory MIAI have recently acquired a ZX Spectrum which, according to the sticker on the bottom, should be a 48K model. It's an Issue 3 board, with upper memory…
  • 32k memory Italian memory expansionNot mine but its an [URL="http://www.ebay.co.uk/itm/TENKOLEK-32K-RAM-Expansion-Sinclair-ZX-Spectrum-/320861810075?pt=UK_VintageComputing_RL&amp;hash=…
  • Spectrum 48K - upper memory problemsHi<br /> I have a ZX Spectrum 48K issue 3B which does not see upper memory.<br /> On PRINT PEEK 23732+256*PEEK 23733 i got result 32767.<br /> POKE 3…
  • Upper Memory LinksI've got an 1982 Issue Two Spectrum 48k with an upper RAM fault. I've narrowed down the faulty IC and I'm in the process of removing the 8 IC's, sock…
  • 48K Upper memory issues?Having more issues with the 48K spectrum I just fixed that had the black screen in this thread [URL="http://www.worldofspectrum.org/forums/showthread…
  • Upper memory issueZX Spectrum 48K, issue 2, boots fine.<br /> Lower RAM OK.<br /> When tested with the new test ROM in the Diagboard, for all upper RAM tests "FAIL" …
  • Upper memory not available in issue 2A friend send me his issue 2 Spectrum for diagnosis. It boots okay but for some reason won't load games over 16kB. He sent also a Smart Card with int…

Related Searches

  • lowest memory for code
  • lowest memory position for machine code
  • lowest memory position machine code
  • lowest memory machine code
  • lowest memory code
  • lowest memory
  • memory map
  • basic upper lower case
  • basic change upper lower case
  • led storm memory
  • disable upper ram
  • rom fail
  • 128 memory
  • z88 read memory
  • 128k memory
  • memory refresh
  • graphics set high in memory messing up
  • graphics high in memory messing up
  • memory fail bit
  • 128k 2 lower upper memory

Copyright © 2024 World of Spectrum