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<1…78910111213…34>
  • Questions from the new owner of a grey Spectrum +2I managed to pick up a grey Spectrum +2 off of ebay with cheap shipping (I'm in the US... it was $13 total and it has a Donkey Kong tape inside) and …

    ... it nobody has used an eprom adapter to use a 64K ... EPROM and just run a jumper ...
    glancaster glancaster September 2006 Hardware
  • PCW Spectrum PROM ProgrammerHi everyone, I?m looking for a (E)prom programmer circuit diagram that was published for the Spectrum in an old Popular Computing Weekly magazine fro…

    ... and no sign of a Eprom blower, are you sure it ...
    Steve(spt) Steve(spt) September 2006 Hardware
  • Sinclair Basic Vs PascalWith the rise of the structured programming movement (Jackson et al) was it wise to put the Basic programming language into the Spectrum. By this ti…

    ... the laptop write to the EPROM when booting anyway? But far ...
    ewgf ewgf September 2006 Sinclair Miscellaneous
  • HELP -- anybody got WIndows 98?Or some halfway-decent CD-burner software which will work under Win95? I recently upgraded my CD-Rom drive to CD-RW, because they're so cheap nowada…

    ... process of flashing my BIOS EPROM if this can be avoided ...
    robert@fm robert@fm September 2006 Chit chat
  • How to write an IDE drive (8 bit)?Hi there. I want to build the 8-bit interface by Pera Putnik, and substitute the original ROM by an EPROM with the appropriate program in order to c…

    ... the original ROM by an EPROM with the appropriate program in ...
    piters piters October 2006 Hardware
  • divIDEAnyone heard any info on these (IDE interface for Speccy) ? I emailed the people responsible for selling these here in the UK, and heard nothing bac…

    ... will be on a Flash EPROM to allow you to upload ...
    icabod icabod October 2006 Hardware
  • How to write an IDE drive (8 bit)?Hi there. I want to build the 8-bit interface by Pera Putnik, and substitute the original ROM by an EPROM with the appropriate program in order to c…

    ... flash my new Speccy's EPROM until next week, so I ...
    bcneastman bcneastman October 2006 Hardware
  • How to write an IDE drive (8 bit)?Hi there. I want to build the 8-bit interface by Pera Putnik, and substitute the original ROM by an EPROM with the appropriate program in order to c…

    ... flash my new Speccy's EPROM until next week, so I ...
    piters piters October 2006 Hardware
  • Amazon SystemsIn the 1980s, my company, Amazon Systems, did quite a few Arcade to Home Computer conversions for Parker Games. The games Panama Joe and Death Star…

    Update #2
    The loose EPROM's have also been dumped ( ...
    Gilby Gilby October 2006 Games
  • EightyOne 0.43Hmmm, 'twas round about July I fell asleep and only came round t'other day - honest gov! Anyway, I thought I'd better whip out a quick release and p…

    ... is prevented by setting the EPROM write-protect switch off - however ...
    glancaster glancaster November 2006 Emulators
  • EightyOne 0.43Hmmm, 'twas round about July I fell asleep and only came round t'other day - honest gov! Anyway, I thought I'd better whip out a quick release and p…

    ... is prevented by setting the EPROM write-protect switch off - however ...
    MikeW MikeW November 2006 Emulators
  • Where to get Spectrum RAMSigh. Even obsolete nixie tubes seem to be easier to get hold of than Spectrum RAM. I've tried the usual suspects (eBay and google searches), but not…

    ... on forum.
    Only need EPROM (FLASH) programmer and little soldering ...
    piters piters November 2006 Hardware
  • USB Flash DriveHi all, Does anyone know if it possible to build a USB interface where one can connect a USB Flash Drive to? These are also called "Memory Sticks" i…

    ... /> Of course usage of Flash EPROM is also solution. Plus some ...
    piters piters November 2006 Hardware
  • ZX OS'es: really useful? eg. ZX Spectrum OS, "Doors" by Aqua[url]http://www.snakeoillabs.com/2005/10/30/8-bit-guis-eye-candys-not-just-for-the-32-bit/[/url] I know bunch of OSes around like those, are those O…

    ... to reside in DivIde's Eprom, thus leaving more memory to ...
    Arda Arda November 2006 Sinclair Miscellaneous
  • ZX OS'es: really useful? eg. ZX Spectrum OS, "Doors" by Aqua[url]http://www.snakeoillabs.com/2005/10/30/8-bit-guis-eye-candys-not-just-for-the-32-bit/[/url] I know bunch of OSes around like those, are those O…

    ... to reside in DivIde's Eprom, thus leaving more memory to ... - you've got the 8K eprom, 32K RAM available in the ...
    gasman gasman November 2006 Sinclair Miscellaneous
  • Dead Spectrum diagnosis and desolderingI have two dead Spectrums - one I'm pretty sure is caused by bad memory, and the other - well, perhaps a bad ROM, perhaps a bad CPU (it gets halfway …

    ... .co.uk/temp/GWROM.JPG]eprom[/url] ] to a real spectrum ...
    Steve(spt) Steve(spt) December 2006 Hardware
  • Dead Spectrum diagnosis and desolderingI have two dead Spectrums - one I'm pretty sure is caused by bad memory, and the other - well, perhaps a bad ROM, perhaps a bad CPU (it gets halfway …

    ... .co.uk/temp/GWROM.JPG]eprom[/url] ] to a real spectrum ...
    DEATH DEATH December 2006 Hardware
  • divIDE - +3 only or what??Guys, I've been let to believe that the DivIDE interface only works with the +3/2a. Looking at a website last night, the info there sugested it woul…

    Righty.
    Jumper 'E' is to allow you to flash the EPROM.
    Jumper 'A' is to provide +2a/+3 compatibility.

    As taken from Factor6's [URL=http://baze.au.com/divide/howto/index_en.html]Guide to building a DivIDE[/URL].
    icabod icabod December 2006 Hardware
  • divIDE - +3 only or what??Guys, I've been let to believe that the DivIDE interface only works with the +3/2a. Looking at a website last night, the info there sugested it woul…

    ... as I should have an EPROM programmer coming through the door ...
    icabod icabod December 2006 Hardware
  • Replacement ROMsSo, I've replaced a couple ROMs in my +3 to be a +3e. I used a couple of 27c256's, which has worked a treat. So if I wanted to replace the ROMs in …

    I have my ZX-PC Interface with (external) Eprom 27128 or 27256.

    No problem with that on all machines.

    Internal you must think that pin 27 has a different meaning.
    Dr BEEP Dr BEEP December 2006 Hardware
  • Replacement ROMsSo, I've replaced a couple ROMs in my +3 to be a +3e. I used a couple of 27c256's, which has worked a treat. So if I wanted to replace the ROMs in …

    48K Speccies use ROM, not EPROM chip. which has 3 lines, ... , if want to put there EPROM, must add some logic circuits ...
    piters piters December 2006 Hardware
  • Replacement ROMsSo, I've replaced a couple ROMs in my +3 to be a +3e. I used a couple of 27c256's, which has worked a treat. So if I wanted to replace the ROMs in …

    ... in my clone to an EPROM back in 1989. I had ... weirdly soldered pins in the EPROM.

    This approach regarded ... connecting it to +5V for EPROM and GND for ROM, IIRC ...
    Marcelo Marcelo December 2006 Hardware
  • Replacement ROMsSo, I've replaced a couple ROMs in my +3 to be a +3e. I used a couple of 27c256's, which has worked a treat. So if I wanted to replace the ROMs in …

    ... and diode, is what the eprom in one of my 48K ... have a Hitachi made 27c128 EPROM chip, the ROM selection straps ...
    DEATH DEATH December 2006 Hardware
  • Replacement ROMsSo, I've replaced a couple ROMs in my +3 to be a +3e. I used a couple of 27c256's, which has worked a treat. So if I wanted to replace the ROMs in …

    ... or anything to use an EPROM in a Speccy - you just ...
    Spirantho Spirantho December 2006 Hardware
  • Replacement ROMsSo, I've replaced a couple ROMs in my +3 to be a +3e. I used a couple of 27c256's, which has worked a treat. So if I wanted to replace the ROMs in …

    ... or anything to use an EPROM in a Speccy - you just ...
    icabod icabod December 2006 Hardware
  • Replacement ROMsSo, I've replaced a couple ROMs in my +3 to be a +3e. I used a couple of 27c256's, which has worked a treat. So if I wanted to replace the ROMs in …

    ... or anything to use an EPROM in a Speccy - you just ... /> There is lot of diverse EPROM available with different control pins ... 3 condition required to activate EPROM (ROM) chip for read:
    EPROM.
    There is 2 free ...
    piters piters December 2006 Hardware
  • 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…

    ... test RAM) or even the EPROM I fitted in, but they ...
    Marcelo Marcelo January 2007 Hardware
  • PC200 Q'sJust started researching 1988, and naturally I'll be mentioning the ill-fated PC200. A Q and a req: Q: Did the PC200 actually get released in 1988?…

    ... />
    - If you have an EPROM burner, it's possible to ...
    John Elliott John Elliott January 2007 Sinclair Miscellaneous
  • a dumb question?Well, I have been confused with all these interfaces so I have the following question which will make things clear for me... ;) Is there a "device" …

    ... solution is to have Flash EPROM in interface - there is a ...
    piters piters January 2007 Hardware
  • a dumb question?Well, I have been confused with all these interfaces so I have the following question which will make things clear for me... ;) Is there a "device" …

    ... solution is to have Flash EPROM in interface - there is a ... BASIC ROM.

    Flash EPROM doesn't gain you anything ...
    glancaster glancaster January 2007 Hardware
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