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<1…28293031323334>
  • New ZX-ULA2An upgraded / replacement ULA for the Sinclair ZX81 is now available. The ZX-ULA2 is a direct replacement for the standard ULA used in the Sinclair …

    An upgraded / replacement ULA for the Sinclair ZX81 is ... direct replacement for the standard ULA used in the Sinclair ZX81 ... home computer.

    The ULA is a custom chip designed ...
    rwap rwap December 2011 Sales
  • Repairing another Issue 2 48K Spectrum.I said at the start of the other thread that I've got another one of these and I've started investigating it. The board is more-or-less exactly the …

    ... they were exactly the same. ULA unplugged, I applied power again ...
    Zorn Zorn December 2011 Hardware
  • 128K sound balanceHello knowledgable-type people, I'm trying to get the best sound on this 128K+ toastrack, using RGB. I've tried using the normal MIC socket. It work…

    ... on this 128K+ toastrack, using RGB.
    I've tried using ...
    Spirantho Spirantho January 2012 Hardware
  • Faulty Interface one, IF1Dear all, as I have already mentioned in a different thread my IF1 stopped working for no special reason. I went through the service manual and chec…

    ... oscillator at pin 5 from ULA. There is 8Mhz available.
    maskenlos maskenlos January 2012 Hardware
  • SLIGHT GHOSTING EFFECTI've recently dusted down my old 128K Spectrum (toast rack version) from the attic, purchased and fitted a new keyboard membrane and purchased a scar…

    ... connects to TV via the RGB socket on the Spectrum.
    Martyh! Martyh! January 2012 Hardware
  • divIDE x Spectrum clonesAnyone has a Spectrum clone and did a test with divIDE? Here in Brazil we have 2 Spectrum clones (TK90X and TK95) that are almost 95-99% compatible w…

    ... know that our ROM and ULA are slightly different of the ...
    Turrican Turrican January 2012 Hardware
  • Faulty rubber speccy - advice neededHello all speccy hardware gurus :) Recently I moved to a new flat and after a long time have some space (and time) to dig out my old Speccy hardware…

    ... lower ram chips... maybe even ULA...

    Of course, when ... them, and confirmed that the ULA from the faulty mbo worked ...
    deckard deckard January 2012 Hardware
  • UN Squadron on real +2BHi there, I have been using 8bit computers for a long time (almost 25 years) and always was fond of ZX Spectrum. Last year I managed to buy a ZX S…

    ... with a LG1721A monitor, with RGB connection and the result is ...
    djcaetano djcaetano January 2012 Games
  • SCRplusAnn: SCRplus 0.19, with a user-friendly GUI (based on GTK+). Converts images to ZX Spectrum format. Supports ULA+ format, Timex 8x1 attributes, YUV…

    ... to ZX Spectrum format. Supports ULA+ format, Timex 8x1 attributes, YUV ...
    AY Chip AY Chip January 2012 Development
  • +2A not showing a pictureThis video explains the problem: [url]http://www.youtube.com/watch?v=1lySPQu7RbI[/url] I can't tune a better picture with the RF and the RGB only g…

    ... with the RF and the RGB only gives a black screen ...
    sf78 sf78 January 2012 Hardware
  • Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…

    ... the basis for understanding the ULA, and all the timing quirks ... of the Spectrum ULA, and the later work Chris ... Smith did to produce the ULA book).

    Some pictures ...
    Winston Winston January 2012 Hardware
  • Broken +2 (Grey), need helpHello, I got a broken +2, and as I have tons of them working, I want to repair it without fear :D When I power up the machine the I see a horizontal…

    ... /> I replaced the ula first, and tested the ula on another board ...
    Arda Arda February 2012 Hardware
  • SpiffyBecause there aren't enough emulators already... [url=https://github.com/ec429/spiffy]Spiffy[/url] is my 48k Spectrum emulator, for Linux. Right no…

    ... ]

    Right now the ULA timings aren't perfect; to ...
    AY Chip AY Chip February 2012 Emulators
  • 48K COMPOSITE VIDEO infosI'm not familiar with the Composite Video, so I'm asking help to WOS. I've got a 48k with Composite Video Mod. I am used to my Toastrack, that I plug…

    ... Scart. Compared with the 128k RGB the 48k Composite Video have ...
    Spectrum Spectrum February 2012 Hardware
  • DIVIDE is responsible for load failure (128k games)?Hi! For some reason when i try to load some 128k games on my spectrum +3 (from my DIVIDE) i get a reset/crash effect.. It doesnt happen to all 128k …

    ... my spectrum +3 (im using RGB cable) but i have a ...
    Costulo Costulo February 2012 Hardware
  • old PC with Monocrome Monitor Out.So as discussed in the Carboot sale thread, I have brought and old Apricot Xi. It takes a monochrome monitor via a 9 pin D connector. Now I don't ha…

    ... to a colour TV via RGB or composite. Is this possible ...
    Scottie_uk Scottie_uk March 2012 Chit chat
  • Spectrum 128K +2 video outAt the weekend I purchased a 128k+2 (the grey one). However, when I connect my TV to its composite out (via the video socket), the picture is quite n…

    ... curing this? Would a 128k RGB scart lead fix the problem?
    Scottie_uk Scottie_uk March 2012 Sinclair Miscellaneous
  • Chaosmongers has a big rant.Just received this Cronosoft related email today:....... [quote] >Hello, >I enjoy the idea of releasing new games for older platforms but... >I h…

    ... the new technologies and add ULA+ colour palettes to the game ... games modified by me for ULA+:
    >[url]http://www ... the new technologies and add ULA+ colour palettes to the game ...
    chaosmongers chaosmongers March 2012 Games
  • Strange behaviour in real hardware but not in emulatorsWell, at least not in any emulator I've tried. I've been reported by fellow forum member Macc that both our Maritrini Monster Slayer and Retroworks'…

    ... problem in emulators, unlike the ULA snow effect which can be ... between $C0 and $FF, the ULA gets confused and crashes can ...
    na_th_an na_th_an March 2012 Emulators
  • Microdrive units with weak (not dead) ULAs...Hi everybody, I've got a Microdrive unit here. It didn't work. It does now (actually, it was the ribbon had broken and the ground had lost contact, …

    ... just kept spinning as the ULA never told it to stop ... .
    I also have another ULA that exhibits similar behaviour - it ... we can get this poor ULA back up to speed? Anything ... signal before going into the ULA. It's the output that ...
    Spirantho Spirantho March 2012 Hardware
  • Lot's of Sinclair parts and sparesI have really a lot spares at home, like: - ULA's - All kinds of RAM chips Many of these parts have already been tested. Most of these parts are pu…

    ... spares at home, like:
    - ULA's
    - All kinds of ...
    bverstee bverstee March 2012 Sales
  • The impossible made possibleSome years ago Miguel Angel Rodriguez Jodar and I developed the PC Keyboard Interface (still available at SellMyRetro.com). The interface however wa…

    ... are no resistors between the ULA (matrix array) and the Z80 ...
    bverstee bverstee March 2012 Hardware
  • 48K's and bad DivIDE compatibilityI have had some 48K boards and complete machines in the past which didn't work fully with a DivIDE interface. The reason for that always was a Z80 pr…

    ... .
    I also tried other ULA's, but the problem is ...
    bverstee bverstee March 2012 Hardware
  • Speccy 48K working only as B&WMy 48K rubber key was working OK after a composite video mod (showing colors). But now it has no colour anymore. It only shows images in B&W. With pr…

    ... cause this? Is a bad ULA?
    My 48K is not ...
    Turrican Turrican April 2012 Hardware
  • Atari 520STFM & Commodore C16Hey all, Got some more of my vintage computers for sale. C16: Complete with PSU and Datasette ?20 posted Atari 520STFM: Up for sale I have an A…

    ... Mouse, Joystick, and brand new RGB Scart Lead.

    The ...
    prabmire prabmire April 2012 Sales
  • Would this work for Scart blanking in +3?I was looking at RGB to Scart cable solutions over at CPCWiki. Theres [URL="http://www.cpcwiki.eu/index.php/TV_SCART_cable#Alternative_RGB_Wiring"]o…

    I was looking at RGB to Scart cable solutions over ... getting a voltage within the RGB treshold for blanking?
    protek protek April 2012 Hardware
  • Getting absolutely no video from a 128+I'm trying to get a friend's toastrack 128 to show video and I'm not having any luck. I'm in the US, so I don't have access to any TVs that can take …

    ... , PAL-capable monitor, and several RGB-capable monitors as well as ... as I can tell, the RGB and composite cables are wired ... 've tried composite video and RGB on all of these, and ... true - on one of the RGB monitors I would see a ...
    papa_november papa_november April 2012 Hardware
  • Some fairly Hard to find speccy hardware on e-bay atmhokay suppose i might as well join the bandwagon, selling off a few old speccy tech rarities, might interest you guys, which is far preferable to som…

    ... see...

    Ferguson MA20 RGB Interface

    Sprint Datarecorder ...
    Vaxalon Vaxalon April 2012 Sales
<1…28293031323334>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
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    John Elliott on April 21
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