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Search Again :: Adv Search 1000 results in 0.026s
<1234567…34>
  • QL repairI have a QL with a memory expansion. It's keyboard membrane is knackered and when switched on screen corruption flickers all over the place and the b…

    ... - leading me to believe the ROM is dead. Does anyone here ... ? Is this behaviour typical of ROM death in QL's? The ... a similar effect with the ROM removed.

    I suppose this ...
    absorbentgnome absorbentgnome May 2005 Wanted
  • Riding my bike in India[youtube]HAeM_1GGrFI[/youtube] Riding my bike back home from the office on the crazy streets of Pune, India. Do not try this at home. Unless home is…

    ... a purge on video's lately. Loads have been removed and somtimes ... says "The Video Is No Longer ... been deleted or video's removed due to the video's containing copyrighted ... />


    PS: Great video James. :p
    Scottie_uk Scottie_uk January 2009 Chit chat
  • Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…

    ... you try with 48K expansion removed? (usually socketed on iss.2 ... . You also might try with ROM removed, to see if 32 vertical ...
    roko roko November 2011 Hardware
  • Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…

    ... exactly the same with the ROM removed. I have also been able ... to try the ROM in a different Spectrum and ...
    Zorn Zorn November 2011 Hardware
  • SOPA good or bad?I see the [url=http://www.raspberrypi.org/]Raspberry Pi[/url] stie is going dark in protest on against SOPA on the 18th Jan. Is it worth going dark …

    ... , they just request that the video be removed. Youtube then removes the ... video which is something you need ...
    guesser guesser January 2012 Chit chat
  • Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…

    ... issue 1 board with the ROM removed:-

    [URL="http:// ... @N08/8832774942/"]Display when no ROM fitted #1[/URL]
    < ... @N08/8832777090/"]Display when no ROM fitted #2[/URL]
    < ... were both taken with the ROM removed. As you can see, slightly ...
    1024MAK 1024MAK May 2013 Hardware
  • Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…

    ... test the Spectrum with the ROM removed. If I run the ... machine with an empty ROM socket then I invariably ... the machine with the ROM inserted then I get ... m thinking that either the ROM is borked, or the ... another Z80 or ROM to try. The ROM is socketed, but ...
    Trafferth Trafferth May 2013 Hardware
  • Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…

    ... the instructions from the ROM, or there's nothing ... sane in the ROM to read...[/QUOTE]
    ... . :) When the test ROM arrives hopefully that will clear ... ... With the RAM and ROM removed you get pure white. ... With only the RAM removed you get a black ...
    Trafferth Trafferth July 2013 Hardware
  • Double Buffering Artefacts on Real HardwareI have a project that I've played around with for a while and always tested using emulators, either ZX Spin or Spectaculator. It is a 128k game th…

    ... .com/wiki/Interrupts]the 128K ROM removed the full table of 0xff ... "almost always" is). The +3 ROM has 0xffff only at 0x3bff ...
    Hikaru Hikaru May 2017 Development
  • Spectrum 128k advice neededHi, I'm new to this forum and the spectrum world. I have this spectrum "toastrack" that was working fine until today. It doesn't boot anymore, it s…

    ... to wait for the test ROM to arrive and go from ... test the machine with the ROM removed.
    Ast_A_Moore Ast_A_Moore July 2020 Hardware
  • Wanted Software to Swap for Rom Carts ;)Wot I have for grabs is 4 Complete ROM Carts which I will swap for my wants below Horace [url="http://www.cornishdavey.dsl.pipex.com/4.jpg"]http://w…

    ... for grabs is 4 Complete ROM Carts which I will swap ... Fun
    Tank Attack
    Video Card Arcade
    Wordsearch
    Cornishdavey:)) Cornishdavey:)) February 2004 Wanted
  • .mgt and if2 .rom filesI did search the forums before I started this thread. Is there an emulator (windows version) that can load the .mgt and the IF2 .rom files? I tried t…

    ... the .mgt and the IF2 .rom files?
    I tried the ... -mode don't like my video card.
    zxbruno zxbruno March 2007 Emulators
  • My SurplusHere's a list of stuff that I plan to sell. Please let me know if you're interested in any of the items listed below. If you need pictures or more de…

    ... sure if it can be removed.
    Hissing noise. I ... work with 50HZ NTSC TV video systems

    ... Lite-On XJ-HD166S DVD-ROM Drive - model XJ-HD166S ... U]RF to RCA/Baseband video converter / TV Demodulator[/U ... . Not sure about other video systems.
    New in ...
    zxbruno zxbruno May 2007 Sales
  • 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…

    ... address space. If I removed the CPU and ROM chip (which occupies ... ULA will no longer access video RAM in sync with the ... to disable the ULA's video generation functionality (i.e. prevent ... it from accessing the video RAM) without affecting the part ...
    Avian Avian May 2007 Hardware
  • Sinclair 128K+ Rom dead?While repairing one of these boards my mind was elsewhere and I put the rom back in the wrong way round and now it doesnt work (scrambled screen) alt…

    ... elsewhere and I put the rom back in the wrong way ... in the board i had removed it to test it in ... an 'eprom' rather than a rom right? Which means its programmable ... can anyone supply a working rom/eprom? For now i replaced ... it with a rom from a grey +2 and ...
    ZX-MAD ZX-MAD April 2008 Hardware
  • Spectrum does streaming videoActually, I was surprised my ROM routines for the socket library were fast enough, but the video seems to play at more or less the correct speed. He…

    ... ROM routines for the socket library were fast enough, but the video ... />
    Here's the video of, err, the video.

    [youtube ...
    Winston Winston November 2008 Development
  • You thought the g20 cop push video was isolated?there seems to be another video now circulating [url]http://www.youtube.com/watch?v=V23PGWd46MM[/url] A new video shows unprovoked assault from a l…

    there seems to be another video now circulating

    [url ... ]

    A new video shows unprovoked assault from a ... colleague.
    The officer had removed his identification number, suggesting that ... any other officers in the video or have any other ...
    mel the bell mel the bell April 2009 Chit chat
  • 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%…

    ... % ok. Swapped ULA, Z80 and ROM for 100% ok types. The ... know these are related to video, and the picture is faulty ... no LED lights up. I removed all 4 74XX chips for ... 32K upper memory and I removed the upper memory to avoid ...
    georgedb georgedb September 2009 Hardware
  • ISO ROM 128 with TR-DOS 5.05(cz)This is new correct version of ISO ROM for ZX + BETADISK. Some extra basic command is designed specially for use in conmination with TR-DOS 5.05(cz).…

    ... new correct version of ISO ROM for ZX + BETADISK. ... add next video)

    ISO ROM 128(version ... velesoft.speccy.cz/other/iso-rom-2010.gif[/IMG]
    rom)
    ! (start DOS ... br />
    ISO ROM after reset no erase memory ...
    velesoft velesoft April 2010 Sinclair Basic
  • 48K Speccy Repair Log.Some people may know my love for writing up my repairs of arcade PCBs on various forums so thought I would do the same for this little fella. Had th…

    ... also did the composite video mod as troubleshooting this ... 128 pins required to removed the 8x16 pin DRAM ... another speccy), a working ROM, working lower RAM and ... an original Sinclair test ROM cart for the Interface ... hooking up the Sinclair ROM cart and running the ...
    Womble Womble August 2010 Hardware
  • Speccy 128 VideoI have had this problem for so long need to share now, to see if any of you can help i don't live in the uk, tvs here don't have scart i output vi…

    ... scart

    i output video from my 2 128 speccys ... composite from pin 1
    -removed the resistor , didn't help ...
    danilop2k2 danilop2k2 May 2012 Hardware
  • ZX 48 issue 4S no s-video possible?No s-video on ZX 48 issue 4S possible? I have had this mod on my issue 4A. But this did not work with my 4S. On C65 is no chrominance signal. Here …

    ... to pin 4 on s-video socket.
    The Luminance ... (B/W video) signal is taken from input ... to pin 3 on s-video socket.
    Pin 1 ... & 2 on s-video socket is soldered to ground ... modulator. The modulator can be removed.


    ...
    -Micky -Micky August 2012 Hardware
  • Image To Zx Spec 1.3.3_02 - Video And Performance ImprovementsI've released Image To ZX Spec 1.3.3_02. In addition to the changes below one notable change is the ability to convert much larger videos as there i…

    ... .
    [*]Removed two video queue bottlenecks (improves video conversion speed).
    [*]Removed all video pre ... conversion replaces it).
    [*]Removed non-internationalised video buffering message.
    [/LIST ...
    brownb2 brownb2 October 2012 Announcements
  • Issue 4A issuesHi all, I've been trying to get the Issue 4A board that came DOA with the case I purchased for my Frankenspectrum to work. I've recapped and socket…

    ... the screen in the following video when powering up:


    Removing the ROM modifies the pattern to a ... .

    I've also removed the upper RAM chips and ...
    balford balford June 2013 Hardware
  • Switchable Timex Sinclair 2068 ROM modificationI have just finished a switchable TS2068 / Spectrum ROM modification and implemented it on two TS2068s. It uses a 32K EPROM chip for the HOME ROM and…

    ... a switchable TS2068 / Spectrum ROM modification and implemented it on ... EPROMs are completely standard TS2068 ROM images. The Spectrum half ... instead of the Timex HOME ROM location.

    These ... first version of an S-video output modification I am ...
    rga24 rga24 November 2013 Hardware
  • ROM replacement using 28C256 EEPROMThought I'd share a quick project I knocked up in order to use a 28C256 EEPROM in place of the standard 23128 ROM in the Spectrum. The connections a…

    ... place of the standard 23128 ROM in the Spectrum.
    ...
    Lastly, the Hitachi ROM links need to be set ... , again with the heatsink removed (it won't work ... cable connection allows the ROM to be dangled out ... br />
    Lastly, the ROM links need to be set ...
    balford balford December 2013 Hardware
  • Interface 1 ROM replacementHi All! I wrote down my story because I think that somebody might have similar problem and can find some ideas here how to overcome it... :) Recent…

    ... jpg[/IMG]
    I removed the ROM and the ZX Spectrum ... any commands that needed the ROM, it failed with the ... with an "external Interface 1 ROM":
    [IMG]http:// ... Spectrum pages in that ROM at only a certain ... is no space for a ROM interface board, so the ...
    jimre jimre June 2014 Hardware
  • Better arrangement for video memory?While doing some documentation work for the ZX-Uno project, I compared the advantages of the weird layout of the ZX Spectrum against a linear layout.…

    ... first scan of character in video memory
    ld b, ... ];Taken from The Incomplete Spectrum ROM Assembly
    ;http://www.wearmouth ... similar to the ZX Spectrum video mode, the similarities end here ... the high byte of the video memory address)

    ...
    mcleod_ideafix mcleod_ideafix September 2014 Development
  • 48K Issue 3B ROM to EPROM methodsHi folks, While fixing up a completely dead Commodore PET I needed a way of testing the 4116 RAM chips that make up its 32K, some googling found a…

    ... containing the 48K ROM and a diagnostic ROM from Paul Farrow ... (47LS32).

    Jumpers removed, BAT85 diodes soldered in (the ... .

    Sanity check ROM burner (MQP Pinmaster 48) by ... reburn the 27c256 with stock ROM (previous attempt had been ...
    witchy witchy December 2015 Hardware
  • Need some help repairing an issue 3 spectrumI am looking for some help repairing an issue 3 speccy, here's what I tried so far. The speccy is not booting up correctly, when using the diagnos…

    ... when using the diagnostic rom all lower ram ic' ... cause. Swapped the ULA, Rom and z80, and these ... putting a working ULA, Rom and z80 made no difference ... installed.

    Removed all lower ram, and turned ... .
    I uploaded a video of it here.
    ...
    patzik patzik August 2016 Hardware
<1234567…34>

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