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  • DivIDE on Spectrum +3Hi all, Is it possible to use the DivIDE on the Spectrum +3 in 128K mode? I have the 'A' jumper set on the board, but my +3 resets into 48K mode wit…

    ... ,xxxxxxx1 can destroy DIVIDE or ULA chip on your ZX+2A ... />
    Exist two ways for fix this problem:
    - connect D0 ...
    velesoft velesoft February 2009 Hardware
  • Help with faulty +2ahi everyone I'm Nuno from Portugal I think I made poopoo with a 128k +2a motherboard I had spare for testing purposes This motherboard has always …

    ... programs ... so I assume the ULA must be ok
    when ... the help
    if i fix the problem I'll post ...
    Nuno2009 Nuno2009 March 2009 Hardware
  • ULA gets so hot, it is cracked open!Hi everyone. I have bought a rubber-keyed 48K and the seller said he was selling it as "for spares/repair." Sure enough, it turns out it doesn't work…

    ... to do that to the ULA that was inside the 48 ... wrong that it affected the ULA in a drastic and tragic ... won't even bother to fix this 48 because it seems ...
    memrah memrah March 2009 Hardware
  • Two dead SpectrumsHi all, Long time since I posted on here. I'm having a bit of a clear-out, and I've re-discovered two Spectrums I had in the loft : One is an orig…

    ... least coloured blocks, since the ULA would just display whatever's ... />
    I'd offer to fix them if I was not ...
    Winston Winston August 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…

    ... example:
    HALT ;after interrupt ula draw border and on data ... joystick interface. It's possible fix also on ZX basic with ...
    velesoft velesoft September 2009 Games
  • 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…

    ... example:
    HALT ;after interrupt ula draw border and on data ... joystick interface. It's possible fix also on ZX basic with ...
    velesoft velesoft September 2009 Games
  • 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…

    ... example:
    HALT ;after interrupt ula draw border and on data ... joystick interface. It's possible fix also on ZX basic with ...
    velesoft velesoft September 2009 Games
  • Ahh.. the tape loading era! by ate bit[url]http://www.pouet.net/prod.php?which=53846[/url] It is UNBELIEVABLE!!! Effects while loading, MUSIC while loading (and loading normal speed !!!…

    ... have been pretty trivial to fix as the Timex TC2048 doesn ... spoiled port addresses.
    The ULA uses 32768 port addresses, the ... is no 'cheap' problem to fix, there is room for improvement ...
    roko roko October 2009 Sinclair Miscellaneous
  • Snow on screen of 48K Speccyok you wizards I fixed up my 4116 ram issue as Winston and McLeod advised me before by replacing with 4164's.... all I could find here in Singapore (…

    Does that snow appear from the first moment ... -prototype-or-the-importance-of-ula-cooling[/url]
    mcleod_ideafix mcleod_ideafix October 2009 Hardware
  • Snow on screen of 48K Speccyok you wizards I fixed up my 4116 ram issue as Winston and McLeod advised me before by replacing with 4164's.... all I could find here in Singapore (…

    ... is 100% solid, and the "snow" is white... I have only ... change) so ULA contention issue would surely make black snow...

    ula timing to mask out half ...
    nuggetreggae nuggetreggae October 2009 Hardware
  • Snow on screen of 48K Speccyok you wizards I fixed up my 4116 ram issue as Winston and McLeod advised me before by replacing with 4164's.... all I could find here in Singapore (…

    ... looks to me like the snow is caused by not enough ... ] and consider the "Picture quality fix". It helped a lot on ...
    8bitchip 8bitchip October 2009 Hardware
  • New Spectrum Game - Battery's not PrecludedThis year's Christmas release is Battery's not Precluded, a drive/shoot/fly-em-up where the player's vehicle, the controls and the object of the game…

    ... it, which always seems to fix Rapidshare's download problems, for ... them problems. It doesn't fix a "File is not found ... soon, looks good though, and ULA + Suppport too (It's becoming ...
    ewgf ewgf December 2009 Games
  • Building a WoS FAQ - contributions and thoughts please!Hi there, as you may have read in [url=http://www.worldofspectrum.org/forums/showthread.php?t=28168]a nearby thread recently[/url], Martijn has boug…

    ... storage, ethernet access, an improved ULA and many more toys. Not ... to incorporate mouse support, or fix bugs so long-impossible games ...
    Danforth Danforth January 2010 Sinclair Miscellaneous
  • ZXDS 0.9.0 beta 1Hi! New version of [URL="http://zxds.raxoft.cz"]ZXDS[/URL] is available. Only one important change this time, but the one I have been dreaming about…

    ... that case I had to fix a couple of their bugs ... others).

    As for ULA+, I'll see, I haven ...
    Patrik Rak Patrik Rak January 2010 Emulators
  • Arcade Game Designer 2.0 releasedI know dozens of you downloaded the previous version of AGD. Well, you can put it away now because I've made some major improvements to that version…

    ... modify the palette for a ULA+ game, all 64 colours are ... bug. POKE 38483,31 should fix this.
    jonathan jonathan March 2010 Development
  • Spectrum +3 with internal 3.5" Floppy!!I've decided to flog my beloved Speccy +3 and fall back to emulation again. Not the same I know, but I'm absolutely skint! It also has the sound dist…

    ... of warranty!) from a dead ULA :([/QUOTE]

    Just packaged ... searching for a decent sound fix, compatible 3.5 drives (like ...
    Spectroid Spectroid April 2010 Sales
  • Flicker fixer for ZX 48KHas anyone the schematics for the flicker fixer: [URL]http://8bit.yarek.pl/computer/zx.48/[/URL] Micky

    ... 'm not very good with PNP transistors)
    [CODE]
    C ... to ULA pin 36
    R

    Transistor: tipical PNP.
    -Micky -Micky April 2010 Hardware
  • IM2 Loading on +3EHi there Speccy Guru's, As some of you know, I've spent a while building the ultimate image for +3e, it's currently at 6000+games and demos and i've…

    ... great if someone able would fix the timings to work on ... space of time, while the ULA is mid-scanline). I won ...
    gasman gasman April 2010 Development
  • Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…

    ... displayable area generated by the ULA seems to be somewhat taller ... 'll try to reproduce and fix it asap.
    Madonna Mk 2 Madonna Mk 2 April 2010 Emulators
  • Vic 20 game better than Speccy version?Years ago, when I had my Vic 20 I had a game called Blitz, it was on the welcome tape in fact. Very simple game, but strangely addictive. For those t…

    ... in A'F').

    ULA II support has been added ... not sure if I can fix this. It seems to be ...
    Jimmy Jimmy April 2010 Games
  • Vic 20 game better than Speccy version?Years ago, when I had my Vic 20 I had a game called Blitz, it was on the welcome tape in fact. Very simple game, but strangely addictive. For those t…

    ... in A'F').

    ULA II support has been added ... not sure if I can fix this. It seems to be ...
    Alien 8 Alien 8 April 2010 Games
  • What does this screen mean?Hi, I wonder if someone might be able to shed some light on what this screen means when powering up the machine: [url]http://i720.photobucket.com/a…

    ... went wrong.

    Btw: ULA seems to be generating an ... , and decide if he can fix it himself (from this story ...
    RetroTechie RetroTechie May 2010 Hardware
  • damaged spectrum+ (blinking squares)Hi, Sorry for my poor english, but I couldn't find on family forums any remedy for my hardware problem with my first speccy in my life :) I've bought…

    ... news: I'd suspect the ULA is still okay since it ... only source for a working ULA is another Spectrum.

    fix this, the old & fragile ...
    RetroTechie RetroTechie May 2010 Hardware
  • So you need to double (or triple, or quadruple) the clock speed...No particular reason for posting this, other than I was looking at an eZ80 evaluation board that does this, and that jogged my memory of a project I'…

    ... divided clock - remember that ULA's clock output isn't ... models would be if the ULA clock stopping wound up ... />
    As for the ULA's clock output, it actually ... a harmonic). If the ULA's clock rise time is ... gate schmitt trigger buffer will fix that (so long as ...
    Winston Winston June 2010 Hardware
  • testing if speccy is fully functionalHi, There is so much mention of T states but still confused. Does this mean if an instructin is out by a T-state or more then the speccy is faulty?…

    ... , and if the Z80 or ULA is likely dead (you can ... i/o bits on the ULA so you can check if ... testing for voltages, you can fix any speccy in not a ...
    Spirantho Spirantho June 2010 Sinclair Miscellaneous
  • +2A extended memory map & ULA bug?The [URL="http://www.worldofspectrum.org/faq/reference/128kreference.htm"]128K reference page[/URL] says: [quote]The ULA bug which causes snow when I…

    [QUOTE=ajmoss;448986]Will the ULA bug appear on the Spectrum + ... ]

    No. +2A/+3 ula don't snow.
    velesoft velesoft June 2010 Hardware
  • 48 Issue 3b working but very hot ula and cpuSalve to everybody I bought from e*ay an Issue 3b 48k , fitted in a + case. Fixed the keyboard problem with a new keyboard membrane from good Rwap (w…

    ... ask.... what type was the ULA for the zx81 you bought ... get a friend to test / fix it for me
    fog fog July 2010 Hardware
  • 48 Issue 3b working but very hot ula and cpuSalve to everybody I bought from e*ay an Issue 3b 48k , fitted in a + case. Fixed the keyboard problem with a new keyboard membrane from good Rwap (w…

    ... fix (are these rare?).

    Unfortunately both have the 183 ULA ... replace them with the 210 ULA.
    gtsamour gtsamour July 2010 Hardware
  • Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …

    ... happens if I don't fix the connection ? [/QUOTE]
    The ... patch is to pull the ULA pin IORQGE high (=invalid) as ... the address decoder for the ULA (=keyboard+border) which normally should ...
    roko roko July 2010 Hardware
  • ZX Spectrum + Issue 6A Repair attemptHello everybody! I got ZX Spectrum + which doesnt work properly. On power up I can see color mosaic, then paper goes black and i can see thin red ba…

    ... way to disable them is fix a control line to +5V ... & machine hangs), or an ULA that's faulty but not ...
    RetroTechie RetroTechie July 2010 Hardware
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ula 7.3K 13K
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