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  • Flashing coloured blocks - diagnosisHiya, hope this is the right place for this... Was given an Issue 2 48K by a someone yesterday that hasn't been powered on in 20 years, which works …

    ... the voltage regulator, TR4 transistor, ULA, or RAM. I've measured ... 're all cold, however the ULA is a bit toasty to ... touch. How warm should the ULA get?

    Any gut ...
    junosix junosix April 2013 Hardware
  • SPECTRA - RGB SCART Interface for 48K SpectrumSince the launch of the SPECTRA interface back in June 2012, some discussion of it has appeared in the forums in the past (mainly [URL="http://www.wo…

    ... not implement support for the ULA+ specification and it is not ...
    Fruitcake Fruitcake April 2013 Hardware
  • Repair 128k +2 grey part2hi all, i am trying to fix it couple of weeks now, i bought a working one for tests and parts check so until now, power TRs are all news memory IC'…

    ... /> i have replace ROM, Z80, ULA, PCF1306 and IC12 74HCU04
    xaris_sm xaris_sm April 2013 Hardware
  • TQFP Packaged CPLD, Which pin pitch?A quick question for those of you with surface mount experience. I am currently thinking about building a 128k clone, and hopefully have a bit of fu…

    ... 21st Century!)

    The ULA code is going to require ...
    ramsrc ramsrc April 2013 Hardware
  • ARKANOID 128KDid anyone try this game? It was modified to work with an ULA+ (but it works also on regular 128k spectrums) and it have enhanced sound thanks the em…

    ... modified to work with an ULA+ (but it works also on ... download the file (and other ULA+ enhanced games): [url]http://www ...
    Spectrum Spectrum April 2013 Games
  • Help reviving a 128 +2 GreyHello m8s, my turn to ask for some help with a +2 Grey. Got it for spares as I do have a working one but I could not resist to try and fix it. As us…

    ... screen and problem. Swapped Z80, ULA and PCF, still the same ...
    Pluto63 Pluto63 April 2013 Hardware
  • Faulty 48K Issue 3 motherboardHi I have a faulty Issue 3 motherboard and would appreciate it if somebody can steer me in the right direction of where to begin with the fault find…

    ... all the 4116 chips, the ULA, CPU and ROM. All are ...
    Pierre Pierre April 2013 Hardware
  • Anyone searching for those?I come across some of those parts. TS1000/ZX81 ROMs 6C001E7 ULA 2C210E ULA Amstrad 40056 ULA PCF1306P/Amstrad 40058 (ZX8401) Anyone interested?

    I come across some of those parts.

    TS1000/ZX81 ROMs
    6C001E7 ULA
    2C210E ULA
    Amstrad 40056 ULA
    PCF1306P/Amstrad 40058 (ZX8401)

    Anyone interested?
    Encarnado Encarnado April 2013 Sales
  • issue 1 wire broken offHi there have just purchased a issue 1 zx spectrum 48k but there is a wire off on the underside of the board. It is from the ula one goes to the keyb…

    ... board. It is from the ula one goes to the keyboard ...
    kenny.steve kenny.steve April 2013 Hardware
  • ZXMAK2 Version 2.7.3.3Hi all, new version of ZXMAK2 emulator is available here: [url]https://zxmak2.codeplex.com/releases/view/106228[/url] Whats new: - a lot of bugs wa…

    ... specific ROM mapping) and BYTE ULA device
    - improved PENTAGON multicolor ... , currently some specific PENTAGON ULA things still not emulated yet ... most precise emulator for PENTAGON ULA :)
    - and other

    ZXMAK ZXMAK May 2013 Emulators
  • 16K/48K Lower RAM (4116) replacement.You may want to read [URL="http://www.worldofspectrum.org/forums/showthread.php?t=37957"]this thread[/URL] for background information on the quest t…

    ... 2 Spectrum with a 5C ULA, consideration must be given to ...
    Zorn Zorn May 2013 Hardware
  • Issue 3 board... How to resurrect?Dear Everyone, Now I have a working 48k Issue 3, a sort of working Speccy+ (still having problems with the keyboard, more of that in another post) a…

    ... RAM chips, and then the ULA, and then the Z80? I ...
    Simon_Carr Simon_Carr May 2013 Hardware
  • Timex 2048 + Interface 2When playing with ZXC3 cartridge (very nice piece of HW from Paul - highly recommended), I connected original Sinclair IF2 to TC2048 and... no joysti…

    ... this is due to different ULA in TC or other elements ...
    kpuchatek kpuchatek May 2013 Hardware
  • Strange and faulty toastrackI just got hold of a toastrack, which is kind of strange. First of all, when I opened it, I spotted a socketed ULA and ROM, which is good, however, t…

    ... it, I spotted a socketed ULA and ROM, which is good ...
    schombi schombi May 2013 Hardware
  • Yet another glitchy graphics 48kHeyo, I'm new both to the forums (sorry if this is the wrong forum) and to Spectra I'm afraid, picked up a 48k from a steam fair sale thingy (not th…

    ... be getting hot except the ULA and to a slight degree ... to try replacing the (socketed) ULA, is this correct (given the ...
    CaptainHayashi CaptainHayashi May 2013 Hardware
  • Homebrew Microcomputer design...getting ICs and stuffFor anyone interest in homebrew microcomputer design or just making add-ons and electronics gizmo's..this might be of interest. Sourcing affordable …

    ... be used to create a ULA and Glue logic. A ZX ... Spectrums ULA fits into 144 Macrocells or ... to pop an enhanced Spectrum ULA onto an EPM7160 /EPM192 / EPM256 ...
    Lez Anderson Lez Anderson May 2013 Hardware
  • Image2ULAplus v 1.2 released todayDear readers, if you are a fan of the amazing ULA+ and HAM256 stuff, you are right here: As Andrew Owen has developed a method of displaying HAM256…

    ... a fan of the amazing ULA+ and HAM256 stuff, you are ... of Edward Cree's wonderful ULA+ renderer SCRPlus.

    HAM8x1 ...
    clausjahn clausjahn May 2013 Emulators
  • Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…

    ... diagnosis:

    1. The ULA is good, since I have ...
    Trafferth Trafferth May 2013 Hardware
  • Another Grey +2 problemGot another grey in, weird problems, works pretty much fine until things are attached to the edge connector. So far this is what has been tried; [L…

    ... any difference, also tried another ULA to no effect. Memory checks ...
    Macc Macc May 2013 Hardware
  • ZX Interface 1 Odd ProblemI have just upgraded a rubber key ZX Spectrum (issue 3) to a ZX Spectrum+. Oddly, when used with a ZX Interface 1, CAT 1 produces a question mark. T…

    ... issue with the ZX Interface ULA / ROM.

    However, I ...
    rwap rwap May 2013 Hardware
  • Issue 4A issuesHi all, I've been trying to get the Issue 4A board that came DOA with the case I purchased for my Frankenspectrum to work. I've recapped and socket…

    ... the same result, and the ULA works fine in my Issue ...
    balford balford June 2013 Hardware
  • Repairing a torn trace on an Issue 2 PCBI've found what I think could be the reason for my Issue 2 board not working properly... There is a torn PCB trace beneath one end of where a new ULA…

    ... end of where a new ULA was inserted into the board ... a previous owner replaced at ULA (it was not an original ...
    Simon_Carr Simon_Carr June 2013 Hardware
  • Microdrive Serial ProtocolGentlemen, I've been dreaming for a long time to develop a Microdrive emulator, where an SD card loaded with .MDR cartridge images can be accessed t…

    ... is sent/received from/to ULA in 16 Z80 T-states ... elapse. I suppose that IF1 ULA has a way to synchronize ...
    Falco-F8L Falco-F8L June 2013 Hardware
  • Spectrum FPGA clone with HDMI video output by Jozsef LaszloThis clone is based upon the ULA core I wrote for opencores.org . It features a scandoubler and HDMI conversion engine. Jozsef has found that a 28MHz…

    ... clone is based upon the ULA core I wrote for opencores ...
    mcleod_ideafix mcleod_ideafix July 2013 Hardware
  • Issue 2 black paper white borderGot an issue 2 here that has a 6c001e ULA, no cockroach, no transistor mod (although you can clearly see on the top of the z80 and on some legs, some…

    ... here that has a 6c001e ULA, no cockroach, no transistor mod ...
    Macc Macc July 2013 Hardware
  • Zero 0.6I'm pleased to announce that I've released Zero 0.6. There are some comprehensive changes in this release including moving to .Net 2.0, removing Slim…

    ... mode (Scotty, Arm73).
    - Fixed ULA Plus mode being disabled in ...
    Arjun Arjun July 2013 Emulators
  • Roger Jowett?Had this email to my ebay account, bearing in mind I had already replied that I only had 2 microdrive connectors left and I dont have any of the othe…

    ... info on these?
    spectra ula+ zx prism...


    Macc Macc July 2013 Sinclair Miscellaneous
  • The Spectrum Resuscitation ThreadKicking off this thread as a place where people who are fixing/restoring Spectrums (or indeed any other piece of related hardware) can show off their…

    ... the board, originals were socketed). ULA and CPU had also been ...
    balford balford July 2013 Hardware
  • 20-column multicolour: a half-baked ideaI was writing an email reply to one Mr Jowett about multicolour routines, and in that way that explaining something to someone else makes you think "…

    ... just before the ULA reaches them. While the ULA is busy ... row down. While the ULA is rendering that first pixel ... byte as soon as the ULA has passed it, and ... and finish just before the ULA catches up with us at ... fifth line, where the ULA caught up and redrew the ...
    gasman gasman July 2013 Development
  • ULAs interchangeable across issuesHi all, Now that I'm retired, I'm looking again at 8 bit computing :) I'm attempting to revive a spectrum 48K. I'm going to swap chips in/out from…

    ... issue ?

    Should a ULA from an issue 6A work ... />
    If retrofitting a newer ULA, do you have to undo ...
    DenisM DenisM August 2013 Hardware
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Latest Posts

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  • Goodbye Z80
    moggy on 9:07PM
  • Happy 40th Birthday to the Amstrad CPC464!
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  • Another Birthday! The Game Boy Is 35!
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  • I am currently watching.....
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  • European Software Titles with an English version
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  • 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
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21

HitBox

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ula 7.3K 13K
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