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  • 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 started wondering whether the ULA was flaky, or if there ...
    balford balford September 2014 Hardware
  • JHCon 2014Hello, not sure if this is the right category but JHCon 2014 will take place[B] from 28. to 30.11.[/B] at usual place - gymnasium in Jindrichuv Hrad…

    ... modes of TC2048/2068 PAL ULA
    --- add a proper Basic ...
    Factor6 Factor6 October 2014 Announcements
  • Weird symptom number 2...I got a new keyboard membrane for my Spectrum+ plugged it in and low and behold the weird left to right printing of the copyright message disappeared…

    ... tests passed, keyboard, RAM, ROM, ULA, IRQ etc.

    After ...
    Korinel Korinel October 2014 Hardware
  • 48K Issue 6A board only showing B/WI have a 48K Issue 6A board here, which only shows a B/W composite video signal on both, the modified RF-out, but also on the expansion bus (using my…

    ... diagnostics tool). I suspected the ULA, as the installed version 5C112E ...
    schombi schombi November 2014 Hardware
  • Spectrum preservation/clean up questions.I&#8217;m sorting out my 5 Spectrums trying to make them look a bit better, and to package them up how they should be, and to get them to be reliable…

    ... ; SCART cables wear out the ULA?

    [6] Feet, I ...
    Korinel Korinel November 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…

    ... of blue.

    5C102 ULA works. U,V and Y ...
    Falco-F8L Falco-F8L November 2014 Hardware
  • Harlequin keyboards / housingsI have about 20 or maybe more ZX Spectrum 48K's, which I'm planning to sell in separate parts (refurbished boards, ULA's and cases). Now I'm interes…

    ... in separate parts (refurbished boards, ULA's and cases).

    bverstee bverstee November 2014 Sales
  • What is the Speccy? exUSSR edition.In exUSSR 8 years ago have been solved all these issues, and developed a General opinion. All who do not agree with this opinion, are incompetent peo…

    ... not exist, because to replicate ULA too expensive.

    6 ...
    Black_Cat Black_Cat November 2014 Hardware
  • Ensure my interrupt handler begins at the same T-stateHi! Is there a way to ensure that an IM 2 interrupt handler starts always at the same T-state (related to the moment the ULA triggers the INT line, w…

    ... (related to the moment the ULA triggers the INT line, which ...
    mcleod_ideafix mcleod_ideafix November 2014 Development
  • XPECCY (Lin/Win)im not author of this emulator. Contacts of author you may take on [URL]http://xpeccy.info[/URL] - non official home page. cpu: Z80: all (un)docume…

    ... (AlCo16c);
    Hardware multicolor;
    ULA+;
    no screen;
    filter ...
    rasmer rasmer November 2014 Emulators
  • New Floppy Interface for the +2a/b (black case)Hello everybody! For a long time I wondered about the posibility of adding a FDD to the +2a/b (black). I knew it was possible; All the logic is alre…

    ... is already in the +2 ULA and the DOS is already ...
    BCH BCH November 2014 Hardware
  • Which emulators support ULA+Tried ZX Spin 7.0, but its unstable. Tried to drag and drop .scr files onto it, but it comes out all wrong. Don't understand the TAP file that's sp…

    Tried ZX Spin 7.0, but its unstable.

    Tried to drag and drop .scr files onto it, but it comes out all wrong.

    Don't understand the TAP file that's spewed out as a palette either.

    Any ideas? Thanks in advance...
    daveysludge daveysludge December 2014 Development
  • RF Video noise on Grey +2's with Z70700 motherboardHi folks, As we know, some limited numbers of Z70700 Iss 1 boards exist (reported by Ben [URL="http://www.worldofspectrum.org/forums/showthread.php?…

    ... after extensive probing of the ULA outputs I wasn't able ... RGB output pins on the ULA, but is filtered somewhere between ...
    balford balford December 2014 Hardware
  • New multisystem floppy interface (spectrum 16Kb/+2A/CPC464)Dear all, I would like to show you my new extern floppy interface. Same interface can be used for both, CPC and Spectrum systems. CHARACTERISTICS …

    ... are usually generated by the ULA, but are emulated in my ...
    wilco2009 wilco2009 December 2014 Hardware
  • 128K Spectrum - can't figure out what's wrongLong time no post :) So I have this 128K Spectrum (+2 ROMs) that I cannot for the life of me figure out where the problem lies. Let's take a look a…

    ... .

    Must be the ULA you say? Tried 2 different ...
    Phu Phu 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…

    ... /list]Baseconf[/url] -- raster and ULA contended memory emulation for original ...
    lvd lvd January 2015 Hardware
  • Joytsick Interface damaged SpectrumHello All, Sob.. I am a plonker, I did the cardinal sin, I was testing a bunch of joystick interfaces that I got off ebay and one didn't have the ke…

    ... inner, but I checked the ULA and it's fine.
    Korinel Korinel January 2015 Hardware
  • Zero 0.7.1/0.6.6 releasedA quick update with fixes for a bunch of issues: ? Fixed issues in load and save binary dialog boxes (serbalgi) ? Fixed issues with going fullscreen…

    ... ) (0.7.1)
    ? Fixed ULA Snapshot (SZX) not loading correctly ...
    Arjun Arjun January 2015 Emulators
  • ZX Spectrum+ DivMMC EnJOY! Grundig 16" LCD TV and books.The Spectrum is in very good condition. Composite video mod. New mambrane (bought in November 2014 from rwap_software [url]http://www.sellmyretro.co…

    ... , 3 V P-P at ULA pin 28 on executing command ...
    pitu pitu January 2015 Sales
  • 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…

    ... that it depends on the ULA type, but there are two ... have the same 5C112E-3 ULA (dated 8314). One shows four ... eight. As I exchanged the ULA between the boards the number ... the same board, so my "ULA dependence theory" seems to be ...
    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…

    ... RAM expansion with CPU and ULA for the Amstrad CPC
    schombi schombi February 2015 Sales
  • Spectrum 48K Ferranti ULAIs there anywhere to get hold of the ICs in the subject? Martin

    Is there anywhere to get hold of the ICs in the subject?

    Martin
    martinw martinw February 2015 Hardware
  • Three Spectrum main boards (Issue Two, 3B and 4A)I will be offering three partially tested Spectrum main boards (Issue Two, 3B and 4A) on Ebay. All boot to the Sinclair (C) message. All fully popula…

    ... populated. Three different flavours of ULA.

    Ebay auction starts ...
    schombi schombi February 2015 Sales
  • New version emulator ZEsarUX-2.1Hi I have uploaded a new version of my ZX80/81/Spectrum/Z88 emulator on http://sourceforge.net/projects/zesarux/ Changes are: Added Cocoa…

    ... /> Fixed Gigascreen colours
    Fixed ULA port reading priority.
    Fixed ...
    chernandezba chernandezba May 2015 Emulators
  • ZX Spectrum issue 6a - yellow border problem<p>Hello!</p><p>I have problem with my Sinclair ZX Spectrum issue 6A, 48K. </p><p>I have changed low memory (all 4116 IC's) and coil, all electrolyti…

    ... electrolytics capacitors, TR4 and TR5, ULA - checked, Z80 - checked, ROM - checked ...
    zxuser zxuser May 2015 Hardware
  • Just Speccy 128What about this Serial 001 board?<br><br><a href="http://www.sellmyretro.com/offer/details/4260" title="Link: http://www.sellmyretro.com/offer/detail…

    What about this Serial 001 board?

    http://www.sellmyretro.com/offer/details/4260

    Is complete with all chips (ULA too!!!).

    Wow!!!
    ranma_simon ranma_simon May 2015 Sales
  • Understanding contentionI'm trying to understand contention and its implications when some "weird" bus cycles (such as I/O cycles with I/O addresses in the contended memory …

    ... to be enlarged until the ULA has performed its video memory ...
    mcleod_ideafix mcleod_ideafix May 2015 Hardware
  • New version (v0.31) of ZX DiagnosticsHi all,<br><br>Just wanted to let people know that I've released a new version of the Spectrum Diagnostics into the wild.<br><br>These were originall…

    ... nice features as a rudimentary ULA test, testcard for tuning VR1 ...
    balford balford June 2015 Hardware
  • ZX81 Composite Mod<p>I've done a simple composite mod to my Issue 3&nbsp;ZX81 following a basic schematic I found on one of the ZX81 forums. Mod consists of a BC547, 1…

    ... input from Pin16 of the ULA, 5V, ground and a video ...
    retrogamemart retrogamemart June 2015 Hardware
  • 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…

    ... . Attached a heatsink to the ULA. [Thanks [url="http://store.retroleum ...
    Mousey Mousey July 2015 Hardware
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Latest Posts

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