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<1…14151617181920…34>
  • 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…

    ... ROM that was causing problems. I've programmed an old 27128 EPROM ... of all things only the ROM got damaged is beyond me ...
    Avian Avian June 2007 Hardware
  • Eprom blowerdoes anyone know a site with plans for an eprom programmer project that'll blow 27C256s. I attempted to build one called Kisseprom, but the software …

    someone told me he replaced a blown rom with an eprom without any modification and it worked fine. Is that possible?
    I mean, if you install the eprom on the board and it boots ok, does that mean its working ok?
    gtsamour gtsamour July 2007 Hardware
  • Eprom blowerdoes anyone know a site with plans for an eprom programmer project that'll blow 27C256s. I attempted to build one called Kisseprom, but the software …

    ... he replaced a blown rom with an eprom without any modification and ... mean, if you install the eprom on the board and it ... of mine working with an Eprom.
    DEATH DEATH July 2007 Hardware
  • Eprom blowerdoes anyone know a site with plans for an eprom programmer project that'll blow 27C256s. I attempted to build one called Kisseprom, but the software …

    ... that they only miss the rom chips.[/QUOTE]

    Yes ... 's has a Prom. An Eprom should work "as is", since ...
    DEATH DEATH July 2007 Hardware
  • Eprom blowerdoes anyone know a site with plans for an eprom programmer project that'll blow 27C256s. I attempted to build one called Kisseprom, but the software …

    ... a real reason to use EPROM (i.e. you have ... around), don't bother using EPROM. Use flash instead - it ... plugged in where the Spectrum ROM went.

    The ... just how I get the ROM images onto the diagnostics ... to provide Vpp for an EPROM to make a Speccy ...
    Winston Winston July 2007 Hardware
  • Eprom blowerdoes anyone know a site with plans for an eprom programmer project that'll blow 27C256s. I attempted to build one called Kisseprom, but the software …

    ... he replaced a blown rom with an eprom without any modification and ... mean, if you install the eprom on the board and it ... replaced a 48K rubber speccy ROM with Geoff Wearmouth's Gosh ... Wonderful ROM. Here's a pdf file ...
    Steve(spt) Steve(spt) July 2007 Hardware
  • Eprom blowerdoes anyone know a site with plans for an eprom programmer project that'll blow 27C256s. I attempted to build one called Kisseprom, but the software …

    ... (in two places) so the ROM setting is at the Hitachi ... right corner of the (installed) eprom on a 48k speccy, is ...
    gtsamour gtsamour July 2007 Hardware
  • Eprom blowerdoes anyone know a site with plans for an eprom programmer project that'll blow 27C256s. I attempted to build one called Kisseprom, but the software …

    ... (in two places) so the ROM setting is at the Hitachi ... right corner of the (installed) eprom on a 48k speccy, is ... />
    One final point, my Eprom was a Hitachi make, which ...
    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…

    ... fix. Replace the ROM. In fact the ROM chip isn't dead ... , you can just reprogram your ROM chip.[/QUOTE]

    99 ... have a PROM, not an Eprom. I've never heard of ... Prom losing it's program.... Eprom being exposed to daylight, maybe ...
    DEATH DEATH July 2007 Hardware
  • Eprom blowerdoes anyone know a site with plans for an eprom programmer project that'll blow 27C256s. I attempted to build one called Kisseprom, but the software …

    ... if i only do the eprom wiring thing, will it ... SELECT pin (#20) in an EPROM. Pin #27 has different ... you have: For an EPROM it is intended as the ... the EPROM is not set to programming mode) and a ROM ... pin left to select either EPROM or ROM, pin #20. Voil?.
    Marcelo Marcelo July 2007 Hardware
  • Eprom blowerdoes anyone know a site with plans for an eprom programmer project that'll blow 27C256s. I attempted to build one called Kisseprom, but the software …

    ... bridge, will a flashed 27C128 eprom work? Just plain and simple ... than helpful in the FLASH ROM department. For a start, I ... far it has its original ROM. I just have to read ...
    Marcelo Marcelo July 2007 Hardware
  • Eprom blowerdoes anyone know a site with plans for an eprom programmer project that'll blow 27C256s. I attempted to build one called Kisseprom, but the software …

    ... ) clone(s) of the Willem EPROM Programmer.
    I have a ... ) and I programmed a FLASH ROM (for a laptop BIOS) and ...
    Marcelo Marcelo July 2007 Hardware
  • Eprom blower for IF2 cartridgesI saw the other thread about eprom blowers, but this is somewhat different. I've been talking to Paul, the creator of the custom 128K keypad and cust…

    ... one of these and an Eprom, I could, should I have ... a desire, make a ROM game, like Trans Am or ...
    DEATH DEATH July 2007 Hardware
  • Early Version Betadisk Manual (ie anybody have one)Folks, after lengthy excavations in my attic I have dug out my old Betadisk interface and 720K drive. However the manual has done missing. It's wa…

    ... to the sticker covering the Eprom in the interface I would ... guess at v3 for the ROM version.

    To be ...
    Kilby Kilby August 2007 Hardware
  • Alternative chips for upper RAM blockDoes anybody know of a way to use 4464 chips instead of 4164 for the upper RAM block in a 48K machine? If not 4464 then something a little more avai…

    ... years ago I changed Spectrum ROM with Eprom 27C128
    and uper ... Eprom and SRAM stack together
    and plug into the original ROM ...
    superfo superfo August 2007 Hardware
  • Alternative chips for upper RAM blockDoes anybody know of a way to use 4464 chips instead of 4164 for the upper RAM block in a 48K machine? If not 4464 then something a little more avai…

    ... years ago I changed Spectrum ROM with Eprom 27C128
    and uper ... Eprom and SRAM stack together
    and plug into the original ROM ...
    DEATH DEATH August 2007 Hardware
  • Wtf??I won this NZ auction earlier this week [url]http://www.trademe.co.nz/Browse/Listing.aspx?id=116509561[/url] and have been to collect the hardware th…

    Get a dump of that ROM if you can, never heard of it! Perhaps if you look inside you'll find an EPROM - someone probably made a custom ROM?
    Winston Winston September 2007 Hardware
  • Microdrive wont LOAD - Help PleaseI have many Microdrive cartridges containing Original Programs and Backups. I have tried to read and load from any number of the cartridges all seem…

    ... on the second ROM so find out which ROM by
    CAT ... you have the first ROM (or a rare EPROM model).
    The ...
    Geoff Geoff September 2007 Hardware
  • Microdrive wont LOAD - Help PleaseI have many Microdrive cartridges containing Original Programs and Backups. I have tried to read and load from any number of the cartridges all seem…

    ... you have the first ROM (or a rare EPROM model)
    ...
    ROM version?

    Thanks,
    Marcelo Marcelo September 2007 Hardware
  • I've got a divIDE. Now what?I've purchased a divIDE and after a month it's at home. What can I do now with that? I've got a 48k+, a +2B and a +3. The +2B has the original ROMs,…

    ... from Baze, two HDs, CD-rom, LS-120 Floppy drive and ... mouse. It also has an eprom emulator connected to the DivIDE ... 's eprom slot. He uses this for ...
    zxbruno zxbruno September 2007 Hardware
  • I've got a divIDE. Now what?I've purchased a divIDE and after a month it's at home. What can I do now with that? I've got a 48k+, a +2B and a +3. The +2B has the original ROMs,…

    ... from Baze, two HDs, CD-rom, LS-120 Floppy drive and ... mouse. It also has an eprom emulator connected to the DivIDE ... 's eprom slot. He uses this for ...
    icabod icabod September 2007 Hardware
  • Wtf??I won this NZ auction earlier this week [url]http://www.trademe.co.nz/Browse/Listing.aspx?id=116509561[/url] and have been to collect the hardware th…

    ... rom select circuit to me. The ROM itself is certainly a 32KB EPROM ... by the speaker across the ROM-type select links is ... which page of the ROM is connected to the ... more info on how this EPROM works, bar the size - ... it and dump the rom for the delectation of ...
    Womble Womble October 2007 Hardware
  • Wtf??I won this NZ auction earlier this week [url]http://www.trademe.co.nz/Browse/Listing.aspx?id=116509561[/url] and have been to collect the hardware th…

    ... />
    As for the 32K eprom - there's not really any ... such thing as an EPROM in two 16K sections, because ... , I split the 512K Flash ROM on ALIAC2 into 32 16K ... any 32K chip (static RAM, EPROM, ROM, flash - whatever, it doesn't ...
    Winston Winston October 2007 Hardware
  • Wtf??I won this NZ auction earlier this week [url]http://www.trademe.co.nz/Browse/Listing.aspx?id=116509561[/url] and have been to collect the hardware th…

    ... code at $39e9 in this rom:

    [CODE]

    eprom window reads as "SPECTRUM ROM KEMP".

    jp jp October 2007 Hardware
  • 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…

    ... />
    The interface has an eprom inside (i didn't open ... , how can i dump the rom?

    Cheers.[/QUOTE]
    ROM code, page it back out ...
    DEATH DEATH October 2007 Hardware
  • 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…

    ... the EPROM code locates to 0 like the Sinclair ROM does, goes ... OUT and bring the 48K ROM goes here
    RET
    DEATH DEATH October 2007 Hardware
  • 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…

    ... have permission to unsolder the eprom.

    Can someone make ... /> It may be that the ROM is paged in on execution ...
    zub zub October 2007 Hardware
  • Testing the Ram on a Toastrack 128KHi All My "new" 128K is misbehaving, all the demos I have loaded for it crash instantly, Ghostbusters 128K is playable but one of the background scr…

    There's a test ROM for the 128K Speccy that's for testing memory. You'll need an eprom programmer or external ROM board though, to use it (such as my diags board). If you're in Oxford on Saturday, well, I'll have it with me :-)
    Winston Winston October 2007 Hardware
  • Testing the Ram on a Toastrack 128KHi All My "new" 128K is misbehaving, all the demos I have loaded for it crash instantly, Ghostbusters 128K is playable but one of the background scr…

    ... ]There's a test ROM for the 128K Speccy ... You'll need an eprom programmer or external ROM board though, to ... .
    Is there a ROM file (not loadable file via ... i can flash in a rom chip (27CXXX) so whenever ... is just replace the original rom chip of the machine ...
    gtsamour gtsamour October 2007 Hardware
  • 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…

    ... lines before they reach the EPROM. So when you read ... than to burn another EPROM to use in the ... extract from such a ROM or EPROM would have:[LIST]
    EPROM map to their corresponding ... actually *does* read the ROM correctly (it has to for ...
    Marcelo Marcelo November 2007 Hardware
<1…14151617181920…34>

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