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<1…21222324252627…34>
  • 2 new FPGA based clone from russiaFirst of all I wanna introduce you to the [B]ZX Evo[/B] by NedoPC -> [URL="http://www.nedopc.com/zxevo/zxevo.php"]http://www.nedopc.com/zxevo/zxevo.p…

    ... an FPGA instead of an ULA, so you can make it ...
    Shockwav3 Shockwav3 August 2009 Hardware
  • Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…

    ... various components such as modualtor, ULA, Z80, memory etc.
    ... [CODE]Serial : [xxxxxxxxxxxx] [ colour ]
    ULA : [5C012E 5C112E 6C001E-6 6C001E ... Serial : 001-62176 white
    ULA : 5C102E 8217
    CPU : ...
    Jakeyw Jakeyw August 2009 Sinclair Miscellaneous
  • Will lightning strike twice?I dunno how many of you follow athletics but even those who don't it can't have escaped your notice that the new world super star of sports is Usain …

    ... been reduced by since electronic timing began.

    He runs ...
    Vampyre Vampyre August 2009 Chit chat
  • Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…

    ... true Z80 and a true ULA, and at most, 48K RAM ...
    mcleod_ideafix mcleod_ideafix August 2009 Development
  • New BUZZSAW+ Demo, No.2OK everybody, here's the latest demo of [I]Buzzsaw[/I]. This includes the title screen I wrote in Corfu with control selection, some new sprites and…

    ... 'C' to view the colour timing setting that it's automatically ...
    joefish joefish August 2009 Development
  • General question about electronics I guess... (128k +2a)[Short question] When I very slightly put my finger on top IC15 on my +2A the TV picture becomes crazy and the spectrum acts if it just resets I don…

    ... is great, ROMS are great, ULA must be good due to ...
    Nuno2009 Nuno2009 August 2009 Hardware
  • RGB to VGA convertor for ZX (clones)[img]http://s44.radikal.ru/i106/0908/1a/28c90d0ca25b.jpg[/img] [img]http://s15.radikal.ru/i188/0908/f2/c1d66b5f6d4f.jpg[/img] It's GOOGLE translatio…

    ... ,HSYNC,VSYNC,+5V,GND,14MHz (ula clock). Output is VGA 50 ... or CSYNC only)
    - faster ULA clock than 14MHz (ZX128 use ... calculate pixel clock from original ula clock):
    [img]http://velesoft ...
    velesoft velesoft August 2009 Hardware
  • Specdrum SyncroI'm having trouble syncing my (revision 4b)48k specdrum. The sync pulses sent out of the MIC socket are low, barely +50db, and isn't powerful enough…

    ... />
    Anyway, is this a ULA problem, if I change the ... to pin 28 of the ULA will I get better performance ...
    apprenticemart2 apprenticemart2 September 2009 Hardware
  • Spectrum dead: 8 vertical bars in alternating colorsI have been soldering on this basterd for a long time now. All IC's now have sockets (except the LM1889). I swapped all 4116's by types that are 100%…

    ... . Power is 100% ok. Swapped ULA, Z80 and ROM for 100 ...
    georgedb georgedb September 2009 Hardware
  • Preliminary MontyHey All... A new 2009 production (port from Atari) of a game called "Preliminary Monty" is out. It is a VERY nice platform game - with a bit "crude…

    ... to check this though.... Also timing is done for Pentagon so ...
    Tom-Cat Tom-Cat September 2009 Games
  • Horror repair story...Today the (new) +3 had a strange issue: keys 6,y,h,n and 8,i,k were not working. Also, the internal drive sometimes was not 'visible' from the Loader…

    ... was near that spot... the ULA!!
    I took my 15x ... inspecting the pins of the ULA...

    I really freaked ... of one side of the ULA were
    loose... WTF! I ... *ck these pins of the ULA were auto-de-soldered ??
    xc8 xc8 September 2009 Hardware
  • Repair options for my own dear old Spectrum 48k?Hello all, This is my first post to this wonderful forum, which is part of a truly great website! My name is Arnold, and I live in Utrecht, The Nethe…

    ... in a working Spectrum). The ULA gets quite hot in the ...
    ZXHistory ZXHistory October 2009 Hardware
  • Some ever noticed that +2A/+3 halts Z80 using WAIT?I mean: Anyone ever noticed that the +2A/+3 halts the Z80 using WAIT? All documentation I've read about contention state that the ULA halts the Z80 …

    ... contention state that the ULA halts the Z80 by ... with the surface mount ULA) uses WAIT to halt ... period, the time that ULA is reading video data. ... 8MHz signal generated by the ULA for the TEA2000. Should ... , internal timmings at the ULA, which is the responsible ...
    mcleod_ideafix mcleod_ideafix October 2009 Hardware
  • First Contact - New Isometric GameIt was about time I did something software-wise! I took a bit of a break from writing the ULA book, and have come up with a new game. Work is very mu…

    ... a break from writing the ULA book, and have come up ...
    csmith csmith October 2009 Development
  • Subacuatic (ZX Spectrum 128k) - MojonTwinsFerdinand W. Templeton is the referential archeologist at the University of Michigan. His important discoveries in such exotic places as Egypt, Phili…

    ... takes advantage of the modified ULA present in the Harlequin clone ... load the game in a ULA-modified Harlequin (when this is ...
    jf_jara jf_jara November 2009 Games
  • Diagnosing Spectrum 48k (faulty RAM chip?)I have a Spectrum 48k (I believe it may be an upgraded 16k model) that doesn't work, and never has ever since the owner gave it to me. When you turn …

    ... the socketed chips (except the ULA, CPU and ROM since they ...
    Muzer Muzer November 2009 Hardware
  • "8 CHANNELS" -ZX Spectrum BEEPER demoHi there. :) We finally managed to finish the BEEPER demo with 8-channels songs. You can get it from here: [url]http://pouet.net/prod.php?which=5…

    ... of ZX SPECTRUM (jack) through ULA chip.

    ZX-7 ...
    Mister Beep Mister Beep November 2009 Sinclair Miscellaneous
  • faulty zxspectrum +hi all i just bought a speccy 48k+ off ebay it worked for like 15 mins now it is stuck on the reset screen. I fear this is something major maybe fau…

    ... maybe faulty ram or the ULA. Does any1 have any ideas ...
    rustyredline rustyredline November 2009 Hardware
  • SPIN 0.7s uploaded; the crowd goes wild......with bug reports! Get it here: [url]http://sites.google.com/site/pauldunn/ZXSpin_07s.zip[/url] New in this version are RPI filters and Overlays …

    ... been enabled for ULA64 and ULA Ramping modes, but will be ...
    Dunny Dunny December 2009 Emulators
  • Trying to repair a 128K (heatsink)I've bought another ZX Spectrum 128K (heatsink model), but unfortunately the last owner did not tell me it did not work.... Because this Speccy also…

    ... on pin 1 of the ULA.

    I took another ...
    bverstee bverstee December 2009 Hardware
  • More colours in existing games?I have been trying to follow the various threads about the new ULA and more colours. I don't understand quiet a lot of it as back in the day all I di…

    ... various threads about the new ULA and more colours. I don ... able to buy this new ULA at some point and pop ... is an option for 'Enhanced ULA'. Does that make existing Speccy ...
    HonoredShadow HonoredShadow December 2009 Emulators
  • grey +2 with blue screenI've been checking through my collection of speccys and one of my grey +2's display white (bright 0) as cyan. Bright 1 white is correct and it does t…

    ... and the scart. Is the ula fooked? Or is it something ...
    BiNMaN BiNMaN December 2009 Hardware
  • Odd keyboard behaviour due to a single bit failure in +3 ROMI've just fixed a spanish +3, which, among normal issues (drive belt missing), presented a very strange one: the keyboard autorrepeated without a del…

    ... was possible. I suspected an ULA failure, which generated too many ... change anything.

    No ULA issues, no keyboard membrane/matrix ...
    mcleod_ideafix mcleod_ideafix December 2009 Hardware
  • Sgt. Helmet Zero - The Mojon Twins (Spectrum 128k)Hi! this is our first christmas present! :lol: [size=150]Sgt. Helmet Zero[/size] [img]http://www.mojontwins.com/wp-content/uploads/2009/12/09.gif[/…

    ... takes advantage of the modified ULA present in the Harlequin clone ... load the game in a ULA-modified Harlequin (when this is ...
    anjuel anjuel December 2009 Games
  • Sinclair ZX 48K rubber keyed faultyI bought a faulty Sinclair ZX 48 K. Power on and the screen shows only 4 vertical white bars. Nothing other happend. I swapped the ULA and it is ok. …

    I bought a faulty Sinclair ZX 48 K. Power on and the screen shows only 4 vertical white bars. Nothing other happend. I swapped the ULA and it is ok. PSU is already ok.

    Any idea what's wrong?


    Micky
    -Micky -Micky January 2010 Hardware
  • 48k spectrum restarts by itselfFirst of all hello from a newb and thank you for your help. This site has already offered me a lot of insight. I have a 48k spectrum that will boot …

    ... removed ands re-seated my ULA a couple of times. It ...
    hedge hedge January 2010 Hardware
  • Spectrum Video Circuitry.Wotcha, I've looking at the circuit diagram of the speccy video circuitry (Hey, I'm snowed in, and theres only so much Civ IV i can stand :p), and I…

    ... purpose of VCC2 from the ULA?

    Thanks ...
    spodula spodula January 2010 Hardware
  • Cyberbig (Animagic S.A.)So, on dm_boozefreek's semi-recommendation (he's bored of it now) I've been playing [url=http://www.worldofspectrum.org/infoseekid.cgi?id=0010481]Cyb…

    ... , and this is with standard ULA emulation.

    So has ...
    Vertigo Vertigo January 2010 Games
  • flickering noisy screenI have just replaced the ram and ULA. The spectrum boots up OK but the screen is very noisy/wobbly/flickering really annoying :) I am wondering how …

    ... just replaced the ram and ULA. The spectrum boots up OK ...
    hedge hedge January 2010 Hardware
  • ULA Book Price - Feedback PLEASEThe book is coming together very nicely, and I am in the process of kicking off all the administration tasks like getting ISBN numbers and setting up…

    The book is coming together very nicely, and I am in the process of kicking off all the administration tasks like getting ISBN numbers and setting up with the printers.

    In order to do this, I need to set the price. The intention is to try and ...
    csmith csmith February 2010 Sinclair Miscellaneous
<1…21222324252627…34>

Latest Posts

  • Happy 40th Birthday to the Amstrad CPC464!
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  • Another Birthday! The Game Boy Is 35!
    dm_boozefreek on 6:17PM
  • I bought an accoustic guitar. How do you play it?
    Maroc's Other Projection on 6:04PM
  • I am currently watching.....
    Antiriad2097 on 5:05PM
  • European Software Titles with an English version
    harriusherbartio on 12:06PM
  • 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
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21

HitBox

Word Docs Hits
contetion 10 13
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ula 7.3K 13K

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