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<1234567…34>
  • Hardware section....Wonder why here is no specific hardware forum??? No one ever touched a soldering iron here? (o; I'm kinda lost here with my hardware stuff under: "…

    It is FPGA based (o;

    Though there is some ULA schematic out there using normal TTL chips....
    klingler klingler July 2004 Sinclair Miscellaneous
  • Hardware section....Wonder why here is no specific hardware forum??? No one ever touched a soldering iron here? (o; I'm kinda lost here with my hardware stuff under: "…

    3. Here's the ULA schematic:

    [url="http://www.womoteam.de/english/Hardware/ZX_Spectrum/ZX_Layouts/body_zx_layouts_0.html"]http://www.womoteam.de/english/Hardware/ZX_Spectrum/ZX_Layouts/body_zx_layouts_0.html[/url]
    klingler klingler July 2004 Sinclair Miscellaneous
  • Hardware section....Wonder why here is no specific hardware forum??? No one ever touched a soldering iron here? (o; I'm kinda lost here with my hardware stuff under: "…

    ... ;
    Though there is some ULA schematic out there using normal TTL ...
    pern pern July 2004 Sinclair Miscellaneous
  • UDG PaperI remember having a few rare sheets of coarse graph paper with 8x8 grid squares that I sketched loads of UDGs on, and the more normal 10x10 grid pap…

    I back-annotated the ULA schematic from the silicon to 24 A3 sheets of this 'graph' paper. Each sheet being a big 6x4 grid (one square per ULA matrix cell), and each containing a smaller 10x10 grid.

    Couldn't have done the job without it.
    csmith csmith November 2009 Development
  • Inside the ULAI've recently updated my Blog with the news that I've managed to get inside a 6C001E ULA and have got close up images of the die. I'm currently back-…

    ... to get inside a 6C001E ULA and have got close up ... back-annotating this into a schematic.

    Read more here ...
    csmith csmith December 2008 Hardware
  • ULA Schematics CompleteHi all. Just a note to say that I have finally produced some readable schematics for the 48K ULA :-) I've also uploaded a few pages from the book -…

    ... readable schematics for the 48K ULA :-)

    I've also ... the phase 3 functional-level schematic next, as staring at approximately ... resistors of the phase 1 schematic.....)
    csmith csmith June 2009 Hardware
  • Fixed schematic of zx128+2 (grey)This is new fixed schematic of ZX Spectrum 128+2 (grey model) [url]http://velesoft.speccy.cz/other/zx128plus2-iss3-schematic%28corrected_v01%29.png[/…

    This is new fixed schematic of ZX Spectrum 128+2 ... speccy.cz/other/zx128plus2-iss3-schematic%28corrected_v01%29.png[/url]

    Old schematic from Lan Worsley contain bad ... IORQGE in ULA part....

    This is old/original schematic with ...
    velesoft velesoft April 2010 Hardware
  • 128k +2 (grey) Ear mod - New ULA and still problemsBverstee kindly sold me a 128K ula since the one in my +2 seemed to have a broken ear in. But even with the new ULA, I still can not load games throu…

    ... kindly sold me a 128K ula since the one in my ... . But even with the new ULA, I still can not load ... the resistors etc. against the schematic, and they are ok.
    Johan1973 Johan1973 August 2012 Hardware
  • Interface 1 ULA - what does it do and what not?I heard a rumour a few weeks ago: that the Interface 1 ULA does not control the Microdrive, but mainly the ROM and network. Many of us (like myself)…

    ... that the Interface 1 ULA does not control the ... almost always we suspect the ULA.
    So the ... So today I downloaded the schematic to find out the truth ... is completely tied to the ULA.
    No question ... it certain that the ULA causes the most problems?< ...
    bverstee bverstee June 2013 Hardware
  • No CLK on issue 2 ULA pin 32I'm trying to fix an issue 2. The symptoms are as follows:- Black and white bars on screen, colours near impossible to tune in, although these po…

    ... of CLK on the ULA, but the ULA's I'm using ... .
    Working back from the ULA I tested and changes the ... /> I'm looking at the schematic and starting to suspect the ...
    lesoleil70 lesoleil70 April 2017 Hardware
  • WANTED: 128k+ or 128k +2(early grey mod.) ULA chipHello, Attempting to repair my 128k+ speccy. Needs a ULA(IC1)chip from either a 128k+ or an early +2 will work also. If anyone has this chip or has a…

    ... 128k+ speccy.
    Needs a ULA(IC1)chip from either a ... 's broken(other than the ULA), please give me a shout ...
    thomas3120 thomas3120 January 2003 Wanted
  • Issue 6a SchematicSince a scanner will only get you so far in reproducing a clear image I decided edit the 6a schematic to take the fuzz out. Martin liked result so …

    ... I decided edit the 6a schematic to take the fuzz out ... so much, he replaced his schematic with my edited version.
    JHutcheson JHutcheson July 2004 Sinclair Miscellaneous
  • ULA schematicsHi everyone. Some while ago I remember getting hold of some circuit schematics of the innards of the Speccy 48K ULA. Sadly I've since lost the files…

    ... innards of the Speccy 48K ULA. Sadly I've since lost ...
    Laser Laser August 2005 Sinclair Miscellaneous
  • ULA?Just curious, what does ULA stand for - I'm guessing Ultra Large (Gate) Array?

    Just curious, what does ULA stand for - I'm guessing Ultra Large (Gate) Array?
    cg cg November 2005 Hardware
  • The ULA and ScreenI've asked something similar before but please bear with me. I'm trying to understand the way the screen is controlled. The ULA controls output to …

    ... is controlled.

    The ULA controls output to the the ... need to change the ROM,ULA and add more RAM ?? or ...
    Saboteur Saboteur November 2005 Hardware
  • sound input causing dead ula in +2 ?I have a dead +2a (it shows static black screen, no border see: [url="http://www.worldofspectrum.org/forums/viewtopic.php?topic=9619&forum=4)"]http:/…

    ... /> I started to think why ula suddenly broke. 'Deadth' posted ... connected tape leads can damage ula.

    Also found ... 1b652469b2ff16c9?lnk=st&q=ula&rnum=18#1b652469b2ff16c9"]http ... 1b652469b2ff16c9?lnk=st&q=ula&rnum=18#1b652469b2ff16c9[/ ...
    Timppa Timppa November 2005 Hardware
  • ULA......Woooooo and ULA 160??'ello all from down under ! they don't know the speccy well this way it seems, anyways, picked up my brand new astra yesterday, and it's got some …

    ... plates on it

    ULA 160

    i'm ...
    bleugh bleugh November 2006 Sinclair Miscellaneous
  • Faulty M1 linesI'm sure this has been discussed before, but using the forum search for the word 'M1' pulled back no hits, which surprised the hell out of me. Anywa…

    ... on the edge connector? The schematic shows it coming from the ...
    Winston Winston April 2007 Hardware
  • ULA chipHi. Where i can find a ULA 6C001E-6 chip for an 3B issue Speccy ? Also looking for one 7805 heatsink... Thank

    Hi.

    Where i can find a ULA 6C001E-6 chip for an 3B issue Speccy ?
    Also looking for one 7805 heatsink...

    Thank
    Gods Gods May 2007 Wanted
  • UlaI remplaced an ULA 6c001-6 by an ULA 6c001-7 chip on issue 3B board. It is "crucial" to remove R32 and adding the 2x NAND gates ??? or not ? Thanks.

    I remplaced an ULA 6c001-6 by an ULA 6c001-7 chip on issue 3B board.
    It is "crucial" to remove R32 and adding the 2x NAND gates ??? or not ?

    Thanks.
    Gods Gods June 2007 Hardware
  • Spectrum ULAHi new to forum ,and have been a speccy owner/fan since the begining{like most 30 somthins on this forum !) Anyway what i want to know is the ULA th…

    ... want to know is the ULA the same from issue 3 ...
    MARKZX MARKZX July 2007 Hardware
  • ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…

    ... and CAS generated from ULA? I think there may ... Ramsoft incorrectly states that ULA doesn't stop CPU ... [LIST=1]
    [*]The ULA address drivers do not open ... I'm curious what exactly ULA is doing then.
    ... reading from it by ULA. The address while bytefetch ...
    brian-82 brian-82 November 2007 Development
  • Serching for ZX printer ULA and ZX interface I ULAIs there anyone having any spares. In both cases, I swapped ULA's from working equipment which fixed things, so I'm 100% sure it's the ULA that is ca…

    Is there anyone having any spares. In both cases, I swapped ULA's from working equipment which fixed things, so I'm 100% sure it's the ULA that is causing the problem.

    Is there anyone who can help?
    georgedb georgedb December 2007 Hardware
  • Spectrum ULA replacement!Hi gang.. The Speccy 48 ULA Replacement is *almost* here ;) There has been lots of activity in building the CPLD board, sorting out some irritating…

    ... gang..
    The Speccy 48 ULA Replacement is *almost* here ;)

    Anyway, the machine with ULA replacement doesn't quite boot ...
    csmith csmith April 2008 Hardware
  • Spectrum 128K toast rack schematic?Bizarrely, the 128K Technical manual in the 'Documentation' section here at WOS has everything you want to know about the 128K toast rack machine... …

    ... />
    Anyone have the proper schematic for this machine?
    Winston Winston May 2008 Hardware
  • ULA Book - Target Audience?This is probably of most intrerest to hardware chaps, but a greater community input would be good. I've been turning all my ULA analysis into a love…

    ... been turning all my ULA analysis into a lovely ... "The Sinclair ZX Spectrum ULA". I'm doing this ... time as creating a complete ULA replacement, so effort is ... features of the machine the ULA encapsulates.
    Do I ... the specifics of the ULA internals, it's going ...
    csmith csmith May 2008 Sinclair Miscellaneous
  • Wanted: RGB SCART cable for heatsink 128K and ULA for issue 3 ZX SpectrumHi all, I'm after an RGB SCART cable for a heatsink 128K as well as a replacement ULA for an issue 3 ZX Spectrum (Ferranti ULA from memory). Can an…

    ... as well as a replacement ULA for an issue 3 ZX ... Spectrum (Ferranti ULA from memory). Can anyone help ...
    gizmomelb gizmomelb May 2008 Wanted
  • ULA Replacement WORKS !Hi chaps. Lots of activity over the last couple of weeks, and _finally_ we have [B]a working ULA replacement[/B] !! The analogue components such …

    ... we have [B]a working ULA replacement[/B] !!

    The ...
    csmith csmith May 2008 Hardware
  • Spectrum ULA Book AnnouncementFurther to getting inside the ULA, I've turned my ramblings and lab book into a more professional book that you can all own! I'm putting a lot of ef…

    Further to getting inside the ULA, I've turned my ramblings ...
    csmith csmith December 2008 Hardware
<1234567…34>

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Related Threads

  • ULA......Woooooo and ULA 160??'ello all from down under !<br /> <br /> they don't know the speccy well this way it seems, <br /> <br /> anyways, picked up my brand new astra yeste…
  • Serching for ZX printer ULA and ZX interface I ULAIs there anyone having any spares. In both cases, I swapped ULA's from working equipment which fixed things, so I'm 100% sure it's the ULA that is ca…
  • Where: ZX Printer ULA's and ZX interface I ULA'sIs there any source left for these ULA's? Alot of tings can be replaced, like the ZTX transistors and occasionally you can come accross a normal ZX S…
  • 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 …
  • +3 schematic wanted.Does anyone have a link where it is on the web ? cheers!
  • Issue 6a SchematicSince a scanner will only get you so far in reproducing a clear image I decided edit the 6a schematic to take the fuzz out. <br /> <br /> Martin like…
  • ULA schematicsHi everyone.<br /> <br /> Some while ago I remember getting hold of some circuit schematics of the innards of the Speccy 48K ULA. Sadly I've since lo…
  • ULA?Just curious, what does ULA stand for - I'm guessing Ultra Large (Gate) Array?
  • The ULA and ScreenI've asked something similar before but please bear with me.<br /> <br /> I'm trying to understand the way the screen is controlled.<br /> <br /> The…
  • sound input causing dead ula in +2 ?I have a dead +2a (it shows static black screen, no border see: [url="http://www.worldofspectrum.org/forums/viewtopic.php?topic=9619&amp;forum=4)"]ht…

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