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<1…11121314151617…34>
  • Component count/modern replacementsThere is a thread/project for replacing the old memory with simms There is also the ULA replacement. There's DEATH's composite replacement. What els…

    ...
    There is also the ULA replacement.
    There's DEATH ...
    dekh dekh February 2009 Hardware
  • Yay. Found an issue 1!I've had a Speccy sitting about the house for a while, unused as it only ran as a 16k (a sticker seal on the casing suggested either a 48k upgrade or…

    ... 1 16k (with the little ULA daughterboard).

    Thing is ...
    liveinabin liveinabin March 2009 Hardware
  • +2 datacorder noise eliminationHello :-) I have recently bought a gray +2, and as expected, it is plagued with the "datacorder noise in sound output" problem. I have found a few …

    ... by motor reaching and destroying ULA if the whole datacorder circuitry ... is wired straight into the ULA without any buffering and a ... the possibility of killing the ULA if the voltage applied exceeds ...
    memrah memrah March 2009 Hardware
  • issue 6a faultyHi All I got issue 6a pcb from ebay with status faulty pcb had bad voltages when I power up I changed tr4 ztx650 and all voltages got back on ic6 I h…

    ... 74ls04 (old one working too), ula working fine - I have 2 ...
    gorski gorski March 2009 Hardware
  • I am currently playing......Don't know if there's been a thread like this, but I can't find one.... Having seen all the different threads asking people if they've played such a…

    ... . It seems to be a typical PS2 platform/arcade action thing ...
    deadpan666 deadpan666 March 2009 Chit chat
  • Sprinter 2000A while ago I bought the Sprinter 2000 from the now defunct St. Petersburg-based company Piters Plus. It is one of the last five or so of the 120 or …

    ... IDE disk support.
    The ULA is kept inside an FPGA ...
    wilsonsamm wilsonsamm April 2009 Sales
  • interface1discipleanyone manage to virtually connect two emulators running on the same machine? could zx spin be modified to replay two rzx files simultaneously? any o…

    ... an lcd screen - think the ula snow comes thru ?
    Roger Jowett Roger Jowett April 2009 Emulators
  • DRAM without powerSomething interesting I noticed last night, after making a bad Spectranet ROM image which crashed the machine... Looking at the image on the screen,…

    ... ago, csmith noted that the ULA sometimes exceeds the datasheet's ...
    Winston Winston May 2009 Hardware
  • Freescape was first developed on...?Hi I have a small debate with some Amstrad users at my forum, over on which platform Freescape was developed on. I insist on Speccy but what the heck…

    ... the heck, you know the typical Amstradians, they think that everything ...
    Pyjamarama Pyjamarama May 2009 Games
  • Problem SpeccyNot sure anyone can help without a photo but I'll describe it anyway (and maybe post a photo later). I have a problem speccy. The display shows a bo…

    ... changed out:
    Z80
    ULA
    Rom
    The chip ...
    beanz beanz May 2009 Hardware
  • Some C64 questionsI've been playing around on a C64 emulator recently, and I have the following questions that I was going to post on Lemon 64, but I thought that sinc…

    ... was deliberately pointing out the faults/flaws on the C64 just ...
    ewgf ewgf May 2009 Chit chat
  • issue 4s for reapirHi All, This time I have issue 4s for repair :) Here is few screen shots and small movie after boot. [url]http://forest.no-ip.org/issue4s/[/url] I kn…

    ... /[/url]
    I know only ula working fine and have good ...
    gorski gorski June 2009 Hardware
  • More 1-bit music from Mr BEEPGot an e-mail this morning but didn't see a thread, so here it is: [url]http://berlin_hq.micromusic.net/bhack.html[/url] [QUOTE]BHQ001 MISTER BEEP …

    ... described above) to get this typical "fluent" Spectrum48 sound which I ...
    zxbruno zxbruno June 2009 Sinclair Miscellaneous
  • Speccy meetup, Oxford, 27th JuneOver on CSS the esteemed Paul E Collins has declared that there shall be a meetup at the Gloucester Arms, Oxford, on Saturday 27 June, from around 1-…

    ... />
    [quote]As usual, the typical meet is a few rounds ...
    gasman gasman June 2009 Announcements
  • Always research your subjectI've just had a typical 417 with all the normal bad grammar and piss poor spelling but at least it made me smile. It was from Mr. Looney Mantle. Fo…

    I've just had a typical 417 with all the normal bad grammar and piss poor spelling but at least it made me smile.

    It was from Mr. Looney Mantle.

    For some reason it didn't inspire confidence.
    ADJB ADJB June 2009 Chit chat
  • How feasible is it to add a second CPU to the ZX Spectrum?Today with IDE, and USB, and TCP/IP and other wonderful technologies arriving on the ZX Spectrum, I'm beginning to wonder if we'll run out of CPU tim…

    ... when neither CPU0 nor the ULA are using it. This ensures ...
    wilsonsamm wilsonsamm June 2009 Hardware
  • Issue One 'Dead Cockroach' chipI recently got hold of an Issue One spectrum, and I started wondering: is the dead cockroach chip required due to a flaw on the PCB, or is it really …

    ... really a flaw in the ULA chip itself?

    Also ...
    trellis trellis July 2009 Hardware
  • Rom Loader questionI want to generate a wav file from a tap file that will load in a Spectrum, so I've had a look at the [URL=http://www.worldofspectrum.org/ldbytes.htm…

    ... ]

    So, for a typical saved chunk of data with ...
    JamesW JamesW July 2009 Development
  • has anyone been hypnotised to help quit smoking??Evening all, My Girlfriend has just gone on a bit about getting hypnotised to give up smoking......... Apparently someone local to us has a 96% succ…

    ... />
    Now I'm your typical scientist type so whilst I ...
    alanspec alanspec July 2009 Chit chat
  • 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
  • We British deserve everything we get"[B]The Lockerbie bomber is to be released on compassionate grounds, the Scottish Government has announced. Abdelbaset Ali al-Megrahi, 57, was jaile…

    ... ]

    That is so typical of this country, we treat ...
    ewgf ewgf 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
  • 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
  • Screen display at resetJust something for curiosity: When the Spectrum is reseted by for example NEW a very typical screen is shortly displayed. [IMG]http://i33.tinypic.c…

    ... for example NEW a very typical screen is shortly displayed.
    Rickard Rickard September 2009 Development
  • 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
  • Smash!!They say they don't make cars like they used to, and on certain levels, I'm *damned* glad about that. It's a real shame they had to wreck a nice old …

    ... this, but in a 40mph typical head on collision between a ...
    Winston Winston September 2009 Chit chat
<1…11121314151617…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott 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
  • Celebrity deaths...
    mel the bell on April 20

HitBox

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typical 2.1K 2.2K
ula 7.3K 13K
faults 719 811

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