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  • I might try building a barebones PC.Our Packard Bell iMedia 5077 is literally on its last legs. Every time it is switched on something doesn't work, usually it is the sound, sometimes i…

    ... SH67H3 Barebones
    Intel i5 socket 1155 2500K
    Seagate Barracuda ... I may donate the DVD ROM drive from my iMedia 5077 ...
    Alien 8 Alien 8 July 2011 Chit chat
  • Challenge Sprint 4x tape recorderHi, I noticed a [url="http://www.worldofspectrum.org/infoseekid.cgi?id=1000051"]Challenge Sprint[/url] on eBay, and checked out the WoS entry for it…

    ... simply could have saved the ROM file at "Sprint speed" and ... save routines from the SPRINT rom to use the standard EAR ... circuitry next to the EAR socket will block the higher frequency ...
    mcleod_ideafix mcleod_ideafix August 2011 Hardware
  • Help with Spectrum 128k reparationHi! I have the following symptoms with a 128k unit version 6U - On power on, black and white bars (one char width each), white background - Once po…

    ... You will need a special ROM for memory testing. I don ... , you have to remove the ROM (EPROM actually) chip, lift ... the chip on its socket and make sure pin 27 ... is left unconnected to the socket.

    Power on ... , and the special tester ROM will be needed.
    mcleod_ideafix mcleod_ideafix September 2011 Hardware
  • Help with Spectrum 128k reparationHi! I have the following symptoms with a 128k unit version 6U - On power on, black and white bars (one char width each), white background - Once po…

    ... and 28, put the ROM again in its socket (all its pins ...
    mcleod_ideafix mcleod_ideafix September 2011 Hardware
  • Help I killed my +3...I replaced the drive belt on my +3 and gave drive quick service. Upon booting everything was fine and one of the discs I bought went in and I heard…

    ... 1. Remove both ROM chips. Left chip is ROM-A, and right ... chip is ROM-B. Label each one ... reference.
    2. Prepare ROM-B chip as indicated in ... and put it on the socket where ROM-A was before. That ... modified" in place of ROM-A. ROM-A is not used for ...
    mcleod_ideafix mcleod_ideafix September 2011 Hardware
  • Requesting a little help to identify the purpose of this 'add-on' to my Issue 2Hi everyone First of all it's my first post here so please go easy on me! I'm grateful to be accepted into your fine little club :smile: I probabl…

    ... the ULA and the ROM. Even the socket for IC4 looks original ... to me. Why socket just that single chip?
    cmonkey cmonkey October 2011 Hardware
  • Guide price for a 48k rubberkeys from you lot?My trusty Spectrum (an Issue 3, working since late 1983 or early 1984) has finally upped and carked on me :-( Now I could hit ebay or the local boot…

    ... at ?25 - that's the ROM, the CPU, the coil, the ... had one once where the ROM, CPU and ULA had all ... , and I'll fit a socket where possible so you can ...
    Spirantho Spirantho November 2011 Wanted
  • Guide price for a 48k rubberkeys from you lot?My trusty Spectrum (an Issue 3, working since late 1983 or early 1984) has finally upped and carked on me :-( Now I could hit ebay or the local boot…

    ... at ?25 - that's the ROM, the CPU, the coil, the ... had one once where the ROM, CPU and ULA had all ... , and I'll fit a socket where possible so you can ...
    rich_chandler rich_chandler November 2011 Wanted
  • Guide price for a 48k rubberkeys from you lot?My trusty Spectrum (an Issue 3, working since late 1983 or early 1984) has finally upped and carked on me :-( Now I could hit ebay or the local boot…

    ... at ?25 - that's the ROM, the CPU, the coil, the ... had one once where the ROM, CPU and ULA had all ... , and I'll fit a socket where possible so you can ...
    Alien 8 Alien 8 November 2011 Wanted
  • 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…

    ... my tests suggest that the socket pins connect to the ... due to the CPU accessing ROM (I've never seen ... Then I removed the ROM and found the central display ... 4V). Looking at the ROM disassembly (and as someone ... to start executing the ROM then almost the first ...
    Zorn Zorn November 2011 Hardware
  • +3 No power LED, disc motor continually spinning..and no display. I searched the posts and i found a really old thread going back to 2004 where fuses in the psu were discussed, checked em in this an…

    hmm, so it looks like the z80 is working at least to some extent.

    I'm slightly stumped at this point. Got another rom you can try in it? (a 32kB eprom with the 48k rom in it would do, plugged in in the Rom A socket)
    guesser guesser December 2011 Hardware
  • spectraNET 2012Hello, time ago I got a divIDE interface and found it awesome, not many IC and so amazing capabilities. Nowdays Internet is everywhere so I looked ar…

    ... incompatibilites (both devices have a ROM, and you should choose which ... interface, and a USB (host?) socket.
    mcleod_ideafix mcleod_ideafix December 2011 Announcements
  • Repairing another Issue 2 48K Spectrum.I said at the start of the other thread that I've got another one of these and I've started investigating it. The board is more-or-less exactly the …

    ... at all the lower RAM socket pins look reasonable and their ... a close look at the ROM disassembly to see whether I ...
    Zorn Zorn January 2012 Hardware
  • Internal ROM expansionHas anybody designed a multiple-ROM interface that plugs into the internal ROM socket instead of plugging onto the edge connector? It would be useful…

    ... 'some logic' to the ROM chip or socket, due to the gained ... which holds bankswitching for both ROM and RAM, all logic for ...
    roko roko February 2012 Hardware
  • Internal ROM expansionHas anybody designed a multiple-ROM interface that plugs into the internal ROM socket instead of plugging onto the edge connector? It would be useful…

    ... be to remove the rom and put a socket in. Then a ... board + adapter pins + pcb + socket on adapter + rom chip). I may be ...
    guesser guesser February 2012 Hardware
  • Internal ROM expansionHas anybody designed a multiple-ROM interface that plugs into the internal ROM socket instead of plugging onto the edge connector? It would be useful…

    ... remove the rom and put a socket in. Then ... pins + pcb + socket on adapter + rom chip). I may be ... left when the ROM is in a socket.
    ... Inserting a FlashRAM means that you need some external ROM ...
    Expanding the ROM size has been done very ...
    roko roko February 2012 Hardware
  • Internal ROM expansionHas anybody designed a multiple-ROM interface that plugs into the internal ROM socket instead of plugging onto the edge connector? It would be useful…

    ... some of the rom replacement criteria?

    "ROM-el 23128/ ... 23256 FLASH ROM Replacement" in your ... http://store.go4retro.com/products/ROM%252del-23128%7B47%7D23256- ... 512kB > to > socket instead rom 16/32 kB:

    velesoft velesoft February 2012 Hardware
  • Best current ide /flash interfaces? and re harlequin cloneHi I have a few 48k rubber-key spectrum's, a harlequin clone board :) on order and 1 (one) divide+ interface. I was hoping zetro's simple IDE woul…

    ... , with one micro-SD card socket

    1.1.3 ... /> - 'ON' control LED
    - 'Shadow ROM' control LED
    - Hard disk ...
    Dan Antohi Dan Antohi February 2012 Hardware
  • Internal ROM expansionHas anybody designed a multiple-ROM interface that plugs into the internal ROM socket instead of plugging onto the edge connector? It would be useful…

    I unsoldered my ROM and replaced it with a socket so I could plug an EPROM in, and also replaced the H-N links with molex pins.
    Jonathan Harston Jonathan Harston February 2012 Hardware
  • Internal ROM expansionHas anybody designed a multiple-ROM interface that plugs into the internal ROM socket instead of plugging onto the edge connector? It would be useful…

    [quote]ROM-el 23128/23256 FLASH ROM Replacement
    velesoft : flash eprom 512kB > to > socket instead rom 16/32 kB:[/QUOTE]

    Either of those might be what I want, but I can't find any documentation on them.
    Jonathan Harston Jonathan Harston February 2012 Hardware
  • New project: CargandoLeches. Ultraloads with ROMHi This project has started months ago, between decicoder, macleod and me. Uses the best modulation of k7zx (throwing shavings). But this ultraloa…

    ... the EAR socket.

    I use a multi-ROM cartridge I ... I have a number of ROM mods there, I've changed ... the copyright message of CargandoLeches ROM to better identify when I ... 'm using it :-) The ROM you download from the webapp ...
    mcleod_ideafix mcleod_ideafix February 2012 Development
  • MB02 picsI got an original MB02 from someone to fix, and of course I made some pics to share (click for magnification): [URL="http://benophetinternet.nl/hobb…

    ... DMA controller inside DMA's socket. So it would be especially ... switch of MB02+'s ROM and enable Speccies ROM to be used ...
    ingo ingo February 2012 Hardware
  • Is there a ROM modification (48K) for load without typing LOAD""?The target is to play with 48K machines with keyboard broken, or an alternative solution for new clones like Superfo instead of making a new keyboard…

    ... materials needed are a DB9 socket and a rotatory switch (1 ... easy solution is change the ROM for other that initalites in ...
    Dr BEEP Dr BEEP April 2012 Development
  • My Issue 2 spectrum"IT'S ALIVE!!!!!" - Dr Frankenstein I got my issue 2 spectrum up and running, colours and all. I borrowed socketed lower ram from my issue 3 that is…

    ... . I need to socket the CPU and ROM at least so that ...
    napoleonblownaparte napoleonblownaparte May 2012 Hardware
  • PZX on WOS ?Is the PZX format accepted on WOS, at least for new production ? (Sorry, if this is wrong section, it looks to me as most suitable for the question.)

    ... finished and their choice to socket the ROMs indicates they eventually ... made the changes to the ROM for Microdigital had a better ...
    chev chev May 2012 MIA/STP/SDP
  • 48k+ CPU SocketThink I've bitten off more than I can chew... After the desoldering my z80 went without incident, no damaged pads, tracks etc. I expected the socket…

    ... showed that Z80 and ROM were replaced (without socket) and the soldering ... is connected to Z80, ULA, ROM, IC23 and edgeconnector.
    ... the ULA out of its socket, and took the 'left' wire ... : Put new Z80 on socket, old ROM on socket, the Spectrum is working ...
    roko roko June 2012 Hardware
  • 48k+ CPU SocketThink I've bitten off more than I can chew... After the desoldering my z80 went without incident, no damaged pads, tracks etc. I expected the socket…

    ... A2 and D6 underneath the socket (I had to use a ... I could have damaged the ROM and/or one or more ...
    napoleonblownaparte napoleonblownaparte June 2012 Hardware
  • Replacing Upper RAM in 48KHi Folks Well, my fun continues :) After sorting the display issues with this machine I found I couldn't load software meant for 48K machines. Havin…

    ... that on top of the ROM. Just a few pins must ... IMO is piggybacking onto a ROM makes it difficult to exchange ... the ROM even when it's in a socket. I've ...
    RetroTechie RetroTechie July 2012 Hardware
  • Another cause for DivIDE problems on 48K'sThe last months some topics were opened to discuss problems with 48K ZX Spectrums and DivIDE. Sofar we found: - Bad Z80's because of poor fanout (si…

    ... />
    Have you inspected the socket? possible corrosion / bad contact / dry ... of some of these old ROM have reached the end of ...
    Zetr0 Zetr0 July 2012 Hardware
  • Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…

    ... thanks.[/QUOTE]

    Messenger rom contain only easy routine for ... memory in eprom socket but pin 26 of socket must be connect ...
    velesoft velesoft August 2012 Hardware
<1…14151617181920…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
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    rich_chandler on April 21
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