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<1…17181920212223…34>
  • 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
  • Simple text compressionI just checked one idea about text compression. Do not take it as recomendation but rather as info which can you save some time when you are solving …

    ... are not accepted
    (for testing purposes i used group of ...
    Fikee Fikee May 2009 Development
  • 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
  • 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
  • qu'est-ce que c'est ?Anyone know what this is? [img]http://i130.photobucket.com/albums/p244/Frobush/policebox1.jpg[/img] [img]http://i130.photobucket.com/albums/p244/Fro…

    ... of "sniffing" machine that is testing the air quality. The town ...
    frobush frobush June 2009 Chit chat
  • Midnight/MU (multi-player Lords of Midnight) - updateMidnight/MU has been mentioned on this forum before, but since we've had a fresh update recently and with Lords of Midnight continuing to be rated as…

    ... programming before going into beta testing late in 2003 and then ...
    Celebaglar Celebaglar June 2009 Announcements
  • 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
  • ZX-Explorer v1.2.1 update availableDear forum readers, There's a new version of ZX-Explorer available that comes with some interesting new features: - caching files - already visited…

    ... made a very good beta-testing.

    Hope you enjoy ...
    clausjahn clausjahn July 2009 Emulators
  • 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
  • About divIDE firmwaresI was testing a original divIDE, and I've found that it seems that firmware development is non existant. - FATware doesn't support TZX, and doesn't …

    I was testing a original divIDE, and I' ...
    Zup Zup July 2009 Hardware
  • Unemployed? Share your views and frustrations!Recent figures in the UK reveal their are around 2.4 million out of work. When you think about it, the government has massaged the figures to their …

    ... profile? As well as psychometric testing at interview stage to assess ...
    Hercules Hercules July 2009 Chit chat
  • Broken ZX Spectrum? :(Hi! I bought a 2nd hand ZX Spectrum half a year ago. It worked perfectly fine when I first tried it. I put it back in its box which it was sent in, …

    ... -in was working properly by testing with my C64. It show ...
    josteint josteint July 2009 Hardware
  • Utility to read/write to memory cards formatted for +3EThis post comes from [url=http://www.worldofspectrum.org/forums/showthread.php?t=25658]this thread[/url]. I've released a small command-line utility…

    ... created HDF image file for testing, or a dump of your ...
    mcleod_ideafix mcleod_ideafix July 2009 Emulators
  • New chat client availableI installed a new irc chat client on WoS, pjirc, which you can now test. Note that it's really a client side application (i.e. it runs on your PC) ra…

    ... may block you.

    Testing is done [URL="http://www ...
    mheide mheide August 2009 Sinclair Miscellaneous
  • 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
  • Testing NatshaMy film. Oh, God . The students better turn up tonight! Coming close to 2.00pm and I've got to go! Got loads of nightcluib boucers for this one sho…

    My film. Oh, God . The students better turn up tonight!

    Coming close to 2.00pm and I've got to go! Got loads of nightcluib boucers for this one shot!

    Got to go.
    frobush frobush August 2009 Chit chat
  • 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
  • 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
  • ZX Spectrum Assembler RecommendationHi all, I'm going to try to create a new firmware for the DivIDE. It'll load and save snapshots from a fat based file system. I hope!! For the main…

    ... to do quick changes and testing on the speccy itself so ...
    garethadams garethadams August 2009 Development
  • 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
  • Newest MAME Roms????Hi I'm just spending some time testing the newest MAME 134 Roms, and so far I've found two Roms that is ports of Spectrum games. They are: brod "Br…

    ... 'm just spending some time testing the newest MAME 134 Roms ...
    Frankie Frankie 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
  • 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 …

    ... celebrate 50 years of crash testing by said organization. It's ...
    Winston Winston September 2009 Chit chat
  • ZxCam beta testers wantedAnyone fancy trying out the latest version of ZxCam before I submit it for AppStore approval? The main addition is the ability to upload your 8-bit m…

    ... need it to generate beta testing keys. You can get it ...
    JamesW JamesW September 2009 Development
  • 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
  • An idea for a possible(?) new interfaceDue to the Spectrum's processor speed and the way the ULA works, there are a couple things (among others) that are difficult to do: -Gigascreen or a…

    ... speed and the way the ULA works, there are a couple ...
    zxbruno zxbruno October 2009 Hardware
  • Testers wanted.Apply at irc.coldfront.net, channel #spin. Please do [i]not[/i] paste the download link here - this is internal testing only.You'll need to be pres…

    ... link here - this is internal testing only.You'll need to ... present in the channel while testing to feedback to me personally ... development completely. This is for testing only, and is not ready ...
    Dunny Dunny October 2009 Emulators
<1…17181920212223…34>

Latest Posts

  • I bought an accoustic guitar. How do you play it?
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  • Another Birthday! The Game Boy Is 35!
    dm_boozefreek on 6:17PM
  • 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

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