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<1…16171819202122…34>
  • Heatsink for ULAHi, My Speccy 48k issue 4s starts to get temperamental when it's been on for a while. Machine itself is fine but loading gradually becomes more unre…

    ... chum on Twitter suggested the ULA might be getting hot.
    ULA might cure it? Question is ... put a heatsink on their ULA?

    Cheers ...
    chinnyhill10 chinnyhill10 December 2014 Hardware
  • ZX Evolution -- contended memory and raster emulationFresh bleeding update for [url=http://www.nedopc.com/zxevo/zxevo_eng.php]ZX Evolution[/url] [url=https://code.google.com/p/pentevo/source/list]Baseco…

    ... and ULA contended memory emulation for original 48k and 128k models ... demonstrates how some 48k or 128k prods are working:
    ... gt;60Hz->48k->128k raster modes. Single stroke ... ZeroTeam: for some sources regarding 128k multicolor effect.

    ...
    lvd lvd 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 …

    ... can only be used on 128K machines, and if lower RAM ...
    bverstee bverstee January 2015 Hardware
  • ZX81 ULA Swap questionHi Can someone remind me if all three versions of the ZX81 ULA are electrically compatible? I just bought a ZX81 with an older ULA, so it lacks the …

    ... three versions of the ZX81 ULA are electrically compatible? I just ... a ZX81 with an older ULA, so it lacks the backporch ... happen to have a good ULA 2C210E. Can I simply swap ...
    memrah memrah January 2015 Hardware
  • Fully refurbished ZX Spectrum 48K boards incl. ULA- Including ULA (version that [URL="http://www.bytedelight.com/?p=41"]corresponds to the board issue[/URL] - click to find out more about ULA version…

    - Including ULA (version that [URL="http://www. ... to find out more about ULA versions)
    - All new electrolytic ...
    bverstee bverstee February 2015 Sales
  • Seeking April fool article: turn 48k into 128kHi everyone! When I was about 11 years old (I think ?) an article appeared in a Spectrum related magazine. It turned out to be an April fool's joke,…

    ... ZX Spectrum 48k into a 128k. The analogy was that calculators ...
    pieterc pieterc February 2015 Sinclair Miscellaneous
  • TRAILBLAZER 128k / GHOSTS 'N GOBLINS POKES PLEASEHi speccy chaps, i'm on the hunt for pokes again if anyone can help?! These are: TRAILBLAZER 128k version (infinite time) + infinite jumps if possib…

    ... />
    These are:
    TRAILBLAZER 128k version (infinite time) + infinite jumps ...
    ZEUS ZEUS February 2015 Games
  • Initial check - 128k ToastrackI was wondering if there are any guides to initial checks that can be performed on a 128k speccy (toastrack) before first power on? I've the excelle…

    I was wondering if there are any guides to initial checks that can be performed on a 128k speccy (toastrack) before first power on?

    I've the excellent ones on youtube for the 48k and wondered if there was something similar?
    Will Woodvine Will Woodvine February 2015 Hardware
  • Very rare ZX Spectrum 128K EquipmentI'll sell my ZX 128K with Disciple and Discdrives on ebay... [url]http://www.ebay.de/itm/SINCLAIR-ZX-SPECTRUM-128K-Disciple-2-Disklaufwerke-/301548…

    I'll sell my ZX 128K with Disciple and Discdrives on ebay...

    [url]http://www.ebay.de/itm/SINCLAIR-ZX-SPECTRUM-128K-Disciple-2-Disklaufwerke-/301548172441?[/url]
    Tiger Tiger March 2015 Sales
  • ZX Spectrum (pre-128K) Edge ConnectorCan anyone point me in the direction to a decent diagram of the ZX Spectrum (pre-128K) Edge Connector. I can't believe I've been searching for nearl…

    ... of the ZX Spectrum (pre-128K) Edge Connector. I can't ...
    BloodBaz BloodBaz March 2015 Hardware
  • 128K exclusive single-load games Vs. 128k exclusive multiload gamesAlthough this matter is maybe more suitable to development, I will place it here as it mainly about games ;) I have realized after loading thousand …

    ... most "advanced" ones, that is 128K, can load several or all ... or Chase HQ, while other 128K games, with a similar level ... making use of the extra 128K. What is the reason? The ...
    Ivanzx Ivanzx March 2015 Games
  • MASSIVE ZX SPECTRUM 48/128K GAMES JOBLOT (1987 to 1993) 150 TITLES!!!My personal 1987 to 1993 big originals collection of Speccy Stuff:<br><br><a rel="nofollow" target="_blank" href="http://www.ebay.it/itm/MASSIVE-ZX-S…

    ... /itm/MASSIVE-ZX-SPECTRUM-48-128K-GAMES-JOBLOT-1987-to-1993 ...
    ranma_simon ranma_simon May 2015 Sales
  • 128k toast rack diagnosisHi - I recently won a 128K toast rack, and have got a Retroleum smart card. I've tried a couple of games and all seems fine...-ish.<div><br></div><di…

    Hi - I recently won a 128K toast rack, and have got ... sounds like the membrane?2. 128K Memory test runs through up ... .. ** BANK SELECT FAILED **"
    3. 128k Video page test "Test failed ... sound at all from the 128k specific AY sound tests. The ...
    stevebrowne stevebrowne June 2015 Hardware
  • NUMB CARS (128K) INFITE TIME POKE NEEDED PLEASEHi, can anyone give me a poke for infinite time for the 128k version of NUMB CARS please, It's doing my head in running out of time and losing the en…

    ... for infinite time for the 128k version of NUMB CARS please ...
    ZEUS ZEUS June 2015 Games
  • Spectrum 128K Toastrack vs. +3 RGBGuys, I just got myself a DivMMC, and decided the 'pure' way to use it would be with my toastrack 128K running to a Sony CRT TV via RGB Scart. Wh…

    ... would be with my toastrack 128K running to a Sony CRT ...
    cawley1 cawley1 July 2015 Hardware
  • Spectrum 128k ManualIs there a scanned version of the Speccy 128k manual anywhere? I know there are HTML and text versions, but I'm hunting a full scanned copy.

    Is there a scanned version of the Speccy 128k manual anywhere? I know there are HTML and text versions, but I'm hunting a full scanned copy.
    stevebrowne stevebrowne July 2015 Support files
  • Spectrum+ refurbished by a noob!Sorry if I'm slightly spamming the forum with threads about my Spectrum+, but this is the last one (for now!) as it is all fixed up and I just wanted…

    ... -Sinclair-ZX-Spectrum%2B-48K~~128K-Keyboard-Membrane-2141"]SellMyRetro[/url ... . Attached a heatsink to the ULA. [Thanks [url="http://store.retroleum ...
    Mousey Mousey July 2015 Hardware
  • EmuZwin 128k banks in assembler Having looked at the assembler help file " ORG [{ RAMn | ROMn },] #target_address [, #dest_address ] Defines target assembling address and ta…

    ... to assemble to a particular 128k ram bank? I only need ...
    MatGubbins MatGubbins August 2015 Emulators
  • Where does the ULA+ store its palettes?The ULA+ palates are saved as TAP files, what is the exact address of the colour tables and how are they configured? Can you change the colour val…

    The ULA+ palates are saved as TAP ...
    daveysludge daveysludge August 2015 Development
  • Ferranti ULA ULA5C112E-3 ICBeen clearing out some computer bits and I have a ULA (part number ULA5C112E-3, taken from an Issue 2 48K if I remember correctly and working when it…

    ... bits and I have a ULA (part number ULA5C112E-3, taken ...
    junosix junosix August 2015 Sales
  • [NEW] Retro Virtual Machine v1.0.0 for OSX released!!!!Here it is! Retro Virtual Machine v1.0.0 RELEASED!!!! Many thanks first to Patrik Rak for the PZX format and for their Z80 tests without which RVM…

    ... in the affected machines (48k / 128k / +2) (Not 100% accurate).
    ULA emulation.

    Tape emulation ...
    jcgamestoy jcgamestoy September 2015 Emulators
  • ULAAre ULA's (for Spectrum 48k's) interchangeable through the different issues? To give some background, to work out what was wrong with an old speccy I…

    Are ULA's (for Spectrum 48k's) ... , I tried an issue 3 ula in an issue 2 board ... was done. The issue 3 ULA was then placed back in ...
    Soooperpigdog Soooperpigdog September 2015 Hardware
  • 48k or 128k target ?Hi, As a new coder on Speccy, I wonder which Spectrum model to target for my forthcoming developments (game). I can see there are 3 different sys…

    ... :

    48k
    128k /128k +2
    128k +2a/+3

    Of course targeting a 128k +3 release would be top ...
    majikeyric majikeyric September 2015 Development
  • C21 in ZX 128K+2Hi, What is the function of capacitor C21 in ZX 128K+2 ? It is missing in all schematics I got.

    Hi,

    What is the function of capacitor C21 in ZX 128K+2 ? It is missing in all schematics I got.
    kpuchatek kpuchatek September 2015 Hardware
  • ULA 1E7 in 3B board?Hi all. Any comments on the following would be appreciated. I have an issue 4a and an issue 3b Spectrum. While having a look around inside the 3b …

    ... noticed it contains a 1E7 ULA. I then opened my ... it has the same model ULA.

    Having read ... onwards which had the 7 ULA, whereas the 3b should ... me has just changed the ULA?

    What's ... that I understand the 7 ULA may generate a clearer ...
    Jim M Jim M September 2015 Hardware
  • What is the "SPECTRUM" keyword on a 128K?The 128K replaced UDG characters T and U with new commands; PLAY and SPECTRUM (or possibly the other way around.) The manual ([url="http://www.wor…

    The 128K replaced UDG characters T and ...
    MykeP MykeP October 2015 Sinclair Basic
  • New version emulator ZEsarUX 3.1Hi I have uploaded a new version of my emulator ZEsarUX on http://sourceforge.net/projects/zesarux I have improved accessibility support, no…

    ...

    Added Pokeing to 128k machine (bank, address, value)

    Fixed Inves ULA Colour Delay. It only affects ...
    chernandezba chernandezba October 2015 Emulators
  • I recapped my 128K toastrack, installed stereo kit and detached audio from video, but...Hello fellow forumers! I'm seeking for help: I've finally decided to change all electrolytic capacitors of my 6U (with all Panasonics 105oC)... Af…

    ... of the stereo kit to ULA pins 34 and 35 was ... sure I didn't heat ULA much. However I may heated ...
    geosiou geosiou October 2015 Hardware
  • ULA Replacement??I searched, but maybe I just missed it. Has there (or is there) anyone working on a ULA replacement either as an FPGA or CPLD package? Or, perhap…

    I searched, but maybe I just missed it.

    Has there (or is there) anyone working on a ULA replacement either as an FPGA or CPLD package? Or, perhaps something else such as a microcontroller?

    Thanks
    cbmeeks cbmeeks October 2015 Hardware
  • 128K Toast Rack / +2 Grey Bug Fixed english ROM ?Just spotted this on ebay before ending: http://www.ebay.com/itm/1x-Sinclair-ZX-Spectrum-128K-Toast-Rack-2-Grey-Bug-Fixed-english-ROM-/26206065205…

    ... /itm/1x-Sinclair-ZX-Spectrum-128K-Toast-Rack-2-Grey-Bug ... be safe to place a 128k Toastrack Rom on a grey ...
    Renegade Renegade October 2015 Hardware
<1…16171819202122…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

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128k 16.7K 25K
ula 7.3K 13K

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  • WANTED: 128k+ or 128k +2(early grey mod.) ULA chipHello,<br /> Attempting to repair my 128k+ speccy.<br /> Needs a ULA(IC1)chip from either a 128k+ or an early +2 will work also.<br /> If anyone has …
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  • 128k ULA pinout?Is there someone who has a circuit diagram or pinout for the 128k (+2) ULA?
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