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Search Again :: Adv Search 1000 results in 0.019s
<1234567…34>
  • Wanted: Rubber Key 48K M/board or ULAI have a spectrum that isn't too happy. It seems to be a problem with the ULA... So, has anyone got a spare working motherboard that'll fit in my ca…

    ... be a problem with the ULA...
    So, has anyone got ... a ULA for a 3b revision? I will happily swap my broken board ... .

    The current ULA has Ferranti ULA 6C001E-6 / 8351 stamped ...
    Jason9 Jason9 March 2011 Wanted
  • doubt about swapping ULA in an issue 2 boardIs it possible to swap a 6C001E-6 ULA type with a 5C112E ? I have this issue 2 board that is not booting, it shows me a black border with horizont…

    ... ULA type with a 5C112E ?

    I have this issue 2 board ... suspecting a CPU problem, or ULA.
    Diagnostic ROM doesn't ... would like to swap the ULA and Z80 to narrow the ... like to try swapping the ULA as I have another working ...
    gleegum gleegum September 2020 Hardware
  • Microdrive-Microdrive incompatibility?Hi All! Finally I could get enough Microdrives and connecting blocks (or cable replacement) to make the largest storage configuration of the classic…

    ... (even if only one "other type" of Microdrive was connected to ... to check the ULA version/manufacturing date or the board revision. The serial ... Interface 1 board was an ISS4 board with LA15-302 ULA and edition ...
    jimre jimre June 2014 Hardware
  • ULA type and datecode listHere is a list of all known ULA datecodes with type, collated from various threads and the serial numbers list. For the 6C series ULAs without a -5, …

    ... list of all known ULA datecodes with type, collated from various threads ... probably a replacement ULA.

    [CODE]DATE ULA ISSUE(s)
    Jakeyw Jakeyw August 2014 Hardware
  • 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 boards ... have the same 5C112E-3 ULA (dated 8314). One shows four ... eight. As I exchanged the ULA between the boards the number ... same on the same board, so my "ULA dependence theory" seems to ...
    jimre jimre February 2015 Hardware
  • Spectrum +2 datacorderHi, my Spectrum +2 datacorder isn't working. Does anyone know if I can still load software through the tape/sound socket at the back of the machine i…

    ... read somewhere that the +2A ULA or whatever is called in ... the spectrum main board

    So some type of connection from ...
    Nuno2009 Nuno2009 September 2009 Hardware
  • Spectrum +2 datacorderHi, my Spectrum +2 datacorder isn't working. Does anyone know if I can still load software through the tape/sound socket at the back of the machine i…

    ... read somewhere that the +2A ULA or whatever is called in ... the spectrum main board

    So some type of connection from ... change the arrangement of the board between the +3 and +2A ...
    chev chev September 2009 Hardware
  • Spectrum +2 datacorderHi, my Spectrum +2 datacorder isn't working. Does anyone know if I can still load software through the tape/sound socket at the back of the machine i…

    ... somewhere that the +2A ULA or whatever is called ... spectrum main board

    So some type of connection ... pins showed that the ULA does not drive the ... The input clock of the ULA was ok (35MHz) the ... impossible because no one sells ULA for +2A.

    ingo ingo September 2009 Hardware
  • ULA6C001E-7 and 48K Issue 2Dear Sirs, Could you please let me know if ULA6C001E-7 or ULA6C001E-6 chip was suitable for 48K board issue 2 ? I heard some mods are neccessary…

    ... if you had an older ULA, there is a "hardware patch ... bug with that ula in place on the board. I am not ... not. I used a later revision ULA for testing purposes on my ...
    Johan1973 Johan1973 June 2012 Hardware
  • Price of nice condition issue 1 48K Speccy?I recently came across a 'really great example' issue 1 48K Spectrum on the Internet for ?250 with RF Cable, Mic ear Cable, PSU, Manuals and the Hori…

    ... 's of the issue 5 board.

    However [URL="http ... ) were replaced with a Mullard ULA type ZX8401. A 74LS04 hex inverter ... altered the appearance of the board; however, they did not significant ... : on some boards, the main ULA is provided by Saga rather ...
    bverstee bverstee May 2013 Sinclair Miscellaneous
  • The ULA6C001E-5...Hi everybody, I have been continuing my Quest for the Holy ULA, and have today taken delivery of a ULA6C001E-5. Now, the -6 was used in Issue 3 boar…

    ... any combination of Issue Two board and ULA.

    What ... a 6C ULA in an Issue 2 board that was ... the resistors on the circuit board as well.

    ULA type an Issue Two board was made for ... , even if the ULA has ...
    rga24 rga24 August 2014 Hardware
  • ZX81 and Analogue TVsI recently bought a really nice ZX81 on ebay in amazing condition, but I'm having issues tuning in an old analogue TV to lock onto the signal. I und…

    ... this problem with mine. Which revision board is your ZX81? If you ... have anything but the latest ULA you will be pretty much ... has the later board (red PCB) and latest ULA so it works ... .

    Check you're board revision ;)
    dreamscape dreamscape September 2014 Hardware
  • DivMMC Enjoy - I'm not enjoying it!My DivMMC Enjoy arrived today. Excitedly I rushed home to plug it into my +2a. I have quite a few SD card/CF solutions for my computers so I know wha…

    ... what were the machines and board revisions? I assume they were ... than +2As, but what board revision? If issue 1 were they ... with the board revision, but one board was a +2a (+3 board with the ...

    The +2a board had the ULA busted and some corrosion ...
    BCH BCH February 2015 Hardware
  • What's the best solution for audio loading on a 48k?I have three 48k Speccies. All have been recapped and AV modded, but only one (an issue 4A) is currently loading via Teezix. (the other two (issue 3…

    ... the digitizing circuitry inside the ULA, we are taking about ... with the same board revision and the same ULA revision.
    Also ... between different versions of the ULA, and maybe different batches ... of the same ULA version.

    ...
    1024MAK 1024MAK May 2016 Hardware
  • The "Big Issue" about the ZX 48K rubber key Spectrum . Which Issue is best? There is no easy answer as every 48k rubber keyed Speccy owner will have their own favourite so it will be pretty subjective . But my favourite a…

    ... an inherent issue with the board itself, though, so replacing the ... one fixes the problem.) The ULA, however, is much improved and ... did get better with each board revision, but not necessarily more reliable ...
    Ast_A_Moore Ast_A_Moore April 2017 Hardware
  • Recreated Spectrum .What do we get for the "now" (Aug 2017) best retail price of around £35?Well best/ cheapest retail prices can vary a bit so I thought it best to be specific. At this £35 price ,is it a good deal and what do we get ? A…

    ... going to bring out a board revision of the PI 4 in ... . Apparently the first early version board does not work with certain ... end" equipment specs for USB type c. It appears to be ...
    harriusherbartio harriusherbartio August 2019 Hardware
  • Spectrum rubber key memory upgradeIf a 16k spectrum has a 32k fox upgrade kit installed anyone any idea what board revision we would be expecting to find in this machine? And was this…

    If a 16k spectrum has a 32k fox upgrade kit installed anyone any idea what board revision we would be expecting to find in this machine? And was this an after market kit or one offered by sinclair?:grin: FANX
    zedexspectrum zedexspectrum July 2014 Hardware
  • Wanted: ZX81 caseJust found my old Issue one ZX81, ULA type 8120 (no other markings on the chip). Looking for a case to put it in and hopefully restore to full worki…

    Just found my old Issue one ZX81, ULA type 8120 (no other markings on the chip). Looking for a case to put it in and hopefully restore to full working order.

    Cheers guys
    DEATH DEATH September 2014 Wanted
  • Superfo Harlequin Rev D Documentation wantedI have a Rev D Superfo Harlequin PCB. I would like the documentation (schematic and board layout files), but I get a [b]Not Found[/b] error when I cl…

    ... like the documentation (schematic and board layout files), but I get ... on the link for this revision at the official web site ... of the documentation for this board revision please?

    Or does ...
    1024MAK 1024MAK 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…

    ... on a grey +2? Any board revision?

    And what about ...
    Renegade Renegade October 2015 Hardware
  • ZX Diagnostics v0.33 releasedHi everyone, I'm pleased to announce the release of v0.33 of zx-diagnostics. This release contains the following changes: - ULATest: Detect …

    ... />
    - ULATest: Detect and show ULA type, and new TR6 check
    ULA does not respond to OUT ... joysticks to select test card/ULA test as well as soak ...
    balford balford April 2016 Hardware
  • what are the differences between the 48K spectrum and the spectrum+ ?^^^^^ see above ^^^^^

    ... whole lot more with the board revision that was current when the ...
    darkman darkman October 2004 Sinclair Miscellaneous
  • Issue two picture qualityDoes anyone know if issue two and earlier spectrums have worse picture quality (in general, beside colours) compared to issue 3 and later? I mean on…

    ... the ULA, try a ULA chip from a higher issue board - the ULA's ... balance, but only with the ULA chips that are fitted already ... . I can change the ULA and have to re-align ...
    DEATH DEATH January 2007 Hardware
  • Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…

    ... score for each opcode (each ULA type has different contention points, correct ... contention is [B]only while ULA accesses PAPER. [/B]Therefore in ...
    omega omega May 2007 Development
  • Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…

    ... score for each opcode (each ULA type has different contention points, correct ... cycles per eight cycles during ULA display fetches. The +3 ... /> The 48K/128K machine's ULA responds only to what they ... address bus whereas the +3 ULA responds to the combination of ...
    Woody Woody May 2007 Development
  • Speccy just snuffed it while playing 3D Pinball :(I have two speccys but the one I use most has just given up the gost! :-( game froze up and now all I get is flashing patterns and lines:-( Everyt…

    ... . If you have a spare ULA (check the number against the ... some of the boards specify ULA type XXX or later) - so if ... . DEATH knows more about the ULA than I do, though.
    Winston Winston September 2007 Hardware
  • Multiface 128Hi Would it be possible to convert a Multiface 128 to use with a Spectrum +3. With a piggyback ROM and switch to enable and dissable the different …

    The MF3 uses a PAL ULA type chip, as does the +D. ...
    DEATH DEATH October 2007 Hardware
  • Ultimate Sinclair Spectrum Collection!!![url]http://cgi.ebay.co.uk/Ultimate-Sinclair-Spectrum-Collection-Over-400-Games_W0QQitemZ180324516999QQcmdZViewItemQQptZUK_VintageComputing_RL?hash=i…

    ... to do with the logic board revision or sound chip. All the ...
    retrogod retrogod January 2009 Sales
  • need help with +3 sound mod..well my friend has been doing the mod.. and well informed me the info / instructions aren't 100% there.. basically the matrix of cap's / resisters i…

    ... I knew.. and well the board revision is on the PCB also ...
    fog fog January 2010 Hardware
<1234567…34>

Latest Posts

  • 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
  • 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

HitBox

Word Docs Hits
board 11.7K 16.2K
revision 779 986
ula 7.3K 13K
type 24.1K 30.4K

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  • Board and board style games on the SpectrumWhat good board games, or good games that are sort of board games, are there on the Speccy? I ask because I've just loaded up Scrabble (Psion) for th…
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  • PoC for a ULA video generator described using Handel-C and a Basys FPGA board.Recently, I've taken a course about hardware design for video processing using FPGA's. The HDL used in the course was Handel-C, a C look alike langua…
  • Wanted: Rubber Key 48K M/board or ULAI have a spectrum that isn't too happy. It seems to be a problem with the ULA... <br /> So, has anyone got a spare working motherboard that'll fit in…
  • Edge connector breakout board/level translator boardFor a new project I'm thinking of working on (gah, too many projects...) I'm going to be making a new edge connector breakout board.<br /> <br /> Bas…
  • Issue 3 board with strange piggy-back boardIn case you are interested. I?ve never seen something like this before.<br /> <br /> I have an Issue 3 board here. When I opened the case and found a…
  • ULA type and datecode listHere is a list of all known ULA datecodes with type, collated from various threads and the serial numbers list.<br /> For the 6C series ULAs without …
  • ULA 1E7 in 3B board?Hi all.<br /> Any comments on the following would be appreciated. <br /> I have an issue 4a and an issue 3b Spectrum. While having a look around in…

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