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Search Again :: Adv Search 1000 results in 0.016s
<1…14151617181920…34>
  • Interface 2 questionDoes anyone have one? I had two black cartridges bought for me as a birthday present when I was a kid by an unsuspecting relative suckered in by a sh…

    ... have one? I had two black cartridges bought for me as ... =R10&satitle=zx+spectrum+rom&sacat=-1%26catref%3DC6 ... =1632&pf_query=zx+spectrum+rom&sargn=-1%26saslc%3D3 ...
    murtceps murtceps December 2006 Sinclair Miscellaneous
  • Spectrum Issue two problemI managed to bring back to life a issue two spectrum (at least the power supply cirquit). The screen is now crystal clear (after replacing all the el…

    ... Research Ltd.[/B] logo, then ROM, CPU, and most of the ... dots moving down on a black background (pixel and attribute areas ... that is NOT red-on-black dots crawling down, then you ...
    Marcelo Marcelo January 2007 Hardware
  • Best replacement for ZTX650?What is the best replacement transistor for the obsolete ZTX650? I've read that TIP31 will do the trick. Is there a decent equivalent from the BC or …

    ... loaded, it gave a black screen (black border, black paper with faint vertival ... ) but since i used its ROM to repair another board, even ... operate it without a working ROM.

    Do you have ...
    gtsamour gtsamour January 2007 Hardware
  • Are you a serious programmer of the Spectrum?A statement at the back of "The complete Spectrum ROM disassembly". [quote] The "Complete Spectrum ROM disassembly" is a must for all serious progra…

    ... me to make my own ROM, where I placed all the ... I had access to a ROM burner in 1989), but the ... coupla things, like white-on-black startup colors (bliss!) and the ...
    Marcelo Marcelo March 2007 Sinclair Miscellaneous
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... same problem, everything checked out, rom z80, ula, ram everything. When ... it had a white border, black paper with thin red horizontal ...
    gtsamour gtsamour March 2007 Hardware
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... an Issue 2). Screen stays black for the right length of ... out at 32768. When the ROM does the initialisation, it writes ... RAM, it's not bad ROM, it's not a bad ...
    DEATH DEATH March 2007 Hardware
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... an Issue 2). Screen stays black for the right length of ... out at 32768. When the ROM does the initialisation, it ... RAM, it's not bad ROM, it's not a ... fail with BASIC, but the ROM cannot initialize it properly, ... maybe speed is the issue. ROM init loop ($11DA RAM- ...
    Marcelo Marcelo March 2007 Hardware
  • On a 48K issue 6A......how can i isolate the 32K block? I want to test if there is any fault on the 4116's , leaving the 4532's out of the equation. Will removing the …

    ... of each ram ic to rom, logic, ula and cpu. Every ... normally, showing a white border, black paper, thin red vertical lines ...
    odious odious March 2007 Hardware
  • Spectrum 48K ROMHi Can anybody help I have an Issue 6a Circuit Board which has a faulty ROM Chip. Is it possible to program a ROM Chip with the 48K ROM and fit it as…

    ... moment I have a black screen after trying a ... Microhobby magazine about changing Spectrum ROM with an EPROM.
    ... select the make of ROM. It could be either ... jumper to select between ROM and EPROM. I simply ... lifted one of the ROM/EPROM pins ( so ...
    Marcelo Marcelo April 2007 Hardware
  • 48K Speccy not workingHey, A few months ago (hope it&#180;s not to late) I was loading a game into my speccy and from one moment to another it stopped working! I unplugge…

    ... as being the "black paper and white border" black screen. Forget everything ... set the attributes all to black paper/red ink and then ... freeze with just a black paper and white border. The ... test in the Spectrum's ROM, but then leads to stack ...
    Winston Winston May 2007 Hardware
  • Unconventional way of diagnosing a faultHi everyone Some time ago I got a 48k Spectrum (issue 3B board) in a pretty bad condition. I believe the power supply transistor TR4 failed, causing…

    ... unlikely you'll get 4 black and white stripes like you ... least get a completely black screen because enough ROM code should be ... of BS, check the Spectrum ROM disassembly to make sure it ...
    Winston Winston May 2007 Hardware
  • Unconventional way of diagnosing a faultHi everyone Some time ago I got a 48k Spectrum (issue 3B board) in a pretty bad condition. I believe the power supply transistor TR4 failed, causing…

    ... /> I've always prefered black border, black paper and ink 7 when ... should i alter in the rom so it boots like above ...
    odious odious May 2007 Hardware
  • Unconventional way of diagnosing a faultHi everyone Some time ago I got a 48k Spectrum (issue 3B board) in a pretty bad condition. I believe the power supply transistor TR4 failed, causing…

    ... /> I've always prefered black border, black paper and ink 7 when ... should i alter in the rom so it boots like above ... 60-61 of the Complete Rom Disassembly - "THE EXECUTIVE ROUTINES ...
    alchresearch alchresearch June 2007 Hardware
  • Another TS Emu CartLooks like the one I have. [url]http://cgi.ebay.com/TC2068-Cartdrige-48K-emulator-for-Timex-Computer-2068_W0QQitemZ250133271074QQihZ015QQcategoryZ124…

    ... all TC (Portugal) with TC2048 ROM. TS don't have manufactored ... for sure because they poured black stuff all over so you ...
    Alcoholics Anonymous Alcoholics Anonymous June 2007 Sales
  • New Spectrum HardwareHi all. Well its Friday so it seems as good a time as any (business is a bit slack at the moment) to start up a thread about creating new Spectrum ha…

    [QUOTE=aowen;201283]If the ROM had been finished "R" would ... used as a sort of black hole to throw unwanted stuff ... time i've looked into ROM disassembly. It adds a character ... , channels/streams system in 48k ROM is all broken and nonfunctional ...
    Sonic Sonic July 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…

    ... on it (such as a black paper and white border, or ... . Occasionally, it can mean the ROM is bad (usually if you ...
    Winston Winston July 2007 Hardware
  • Poorly Spectrum + Fault diagnosis help needed!Hi, I've got a Spectrum+. Sometime in the past I broke it and sent it off to be fixed. It came back working good as new, but with an issue 2 board i…

    ... a failure mode of the ROM, the CPU itself or ... CPU.

    Vertical black and white stripes (narrowish ones ... a good sign that the ROM is not working. If ... the ROM never chip selects, the ... will read 0xFF from all ROM locations, which is the ...
    Winston Winston July 2007 Hardware
  • Poorly Spectrum + Fault diagnosis help needed!Hi, I've got a Spectrum+. Sometime in the past I broke it and sent it off to be fixed. It came back working good as new, but with an issue 2 board i…

    ... out that if you have black and white vertical bars etc ... - which could be bad RAM/ROM/Z80 yadda yadda yadda.
    black PCB around them, holes in ...
    DEATH DEATH July 2007 Hardware
  • Poorly Spectrum + Fault diagnosis help needed!Hi, I've got a Spectrum+. Sometime in the past I broke it and sent it off to be fixed. It came back working good as new, but with an issue 2 board i…

    ... ROM will give vertical white-blue pattern (0x0039 attribute), not red-black ...
    Sonic Sonic July 2007 Hardware
  • +2B problem stillHi all, I have a spare +2B that still dont work. Richard kindly sent me 4 x 4464 ram chips but the +2B still dont work I have swapped over both ROM`s…

    ... /> I have swapped over both ROM`s and the Z80 for ... get a flashing black to white back to black border.
    white ... warm and getting hoter, both ROM`s are slightly warm, all ... on sockets so are both ROM`s and the Z80.
    DEATH DEATH July 2007 Hardware
  • ZX80 with new ROM?There's an interesting ZX80 on sale from eBay US, with some included software. The ZX80 has the original keyboard, however the ROM appears to be the…

    ... believe the upgrade of the ROM also required a new ZX81 ... the ROM were upgraded the ZX80 would have a ZX81-style black ...
    hldswrth hldswrth October 2007 Sinclair Miscellaneous
  • Interface rom - Need help to dump itHi, I have temporarily an interface that is similar to a multiface. It has an NMI button and displays a menu where states can be saved and pokes ent…

    ... night, i quickly replaced ula, rom, z80 and the logic to ... working, although having a few black dots appearing randomly after the ...
    odious odious October 2007 Hardware
  • Rom dumping a Mirage MicrodriverI need to dump the rom of my Mirage Microdriver for Zub and don't know what to do...any help?

    ... ), you'd see a frozen, black screen.

    [QUOTE]Or ... of standby state. The Microdriver ROM is actually paged out when ... address space, though. There's ROM from $0000-$0FFF, RAM from ... $2000-$27FF, and probably ROM from $3000-$3FFF, but I ...
    zub zub November 2007 Hardware
  • Changing the colour of the loading 'stripes'I was wondering if it were possible to alter the default colours of the standard ROM loading 'stripes' via BASIC, mabye a POKE command of some descri…

    ... copying out the one in ROM using a BASIC loop, and ... (yellow). Therefore you 'could' have black and white or green and ...
    rich_chandler rich_chandler November 2007 Sinclair Basic
  • Best loading on a gameFor me, it has to be Technician Ted, with all those TT's walking across the screen. 2nd comes Skooldaze, only because I spent many MANY of my evenin…

    ... just change both colours to black.[/QUOTE]

    At the ... the mark.

    The ROM load/save routine for both ... if the primary colour was Black, Blue, Red, Magenta ... or White ... White, Yellow, Cyan, Green ... or Black respectively).
    BloodBaz BloodBaz November 2007 Games
  • I took a chance on this ebay auction what do u think ?I saw what i think is a Rom version of Backgammon in the pic what are the chances its included when it i recieve it ? He doesn't seem to have sold an…

    To me it looks like the thicker black edged box that the ROM version has. Might be worth blowing the pic up in an image editor?
    ghbearman ghbearman November 2007 Sinclair Miscellaneous
  • I took a chance on this ebay auction what do u think ?I saw what i think is a Rom version of Backgammon in the pic what are the chances its included when it i recieve it ? He doesn't seem to have sold an…

    I agree with ghbearman - there's a definite black edging to the box/inlay which is only present on the ROM version. Nice one!
    RichB RichB November 2007 Sinclair Miscellaneous
  • I took a chance on this ebay auction what do u think ?I saw what i think is a Rom version of Backgammon in the pic what are the chances its included when it i recieve it ? He doesn't seem to have sold an…

    ... 2 if he's got rom cartridge's[/QUOTE]

    black border of a rom version. Blowing it ...
    swordheart swordheart November 2007 Sinclair Miscellaneous
  • Faulty +2 Grey :(Hello everyone... i was trying to fix a +2 grey board the other day, i had it for some time now. It gave a black screen (paper and border) with two …

    ... now.
    It gave a black screen (paper and border) with ... , since i tried known working rom, z80 and ULA on it ... cleaning the pins on the ROM chip. I had a similar ... problem and cleaned the ROM chip pins which where very ...
    Martin Baugh Martin Baugh November 2007 Hardware
  • Issue 1 80K SpectrumHere's the other Spectrum I acquired last weekend. It's an [URL="http://www.drumfu.com/Issue1.jpg"]Issue 1[/URL] with an [URL="http://www.worldofspec…

    ... been upgraded(!) with a ZX81 rom. Also the screen display is ... - now white text against a black background.
    There is some ...
    jp jp December 2007 Hardware
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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
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    John Elliott on April 21
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