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<1…567891011…14>
  • DivIDE or PlusDHi, Apologies for what's perhaps a stupid question, but I'm new to this - and until browsing these forums I had never heard of DivIDE or PlusD. I'v…

    ... is easy to repair and EEPROM can be programmed in external ...
    kpuchatek kpuchatek January 2013 Hardware
  • The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…

    You can use the ROM B of a +2A to boot in 48K mode, then load a tape with a program that writes into the EEPROM, and finally swap the ROM B with the AM29010. The 27c256 must fit between pins 3 to 30 of the socket, and you must supply VCC to the pin 30.
    antoniovillena antoniovillena February 2013 Hardware
  • Cheap electronic kits for hobbyists/Students etcAs prices start to get silly on ebay for electronic components like CPUs, Memory etc, I've sourced two suppliers from China that do me great deals. …

    ... cheaper still.

    EPROM / EEPROM? Just be done with it ...
    RetroTechie RetroTechie February 2013 Hardware
  • The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…

    [QUOTE=Severino;683848]The discipel has 8K of rom and 8K of ram[/QUOTE]

    No, sorry, it doesn't. That's a 16K?8 EEPROM and A13 [I]is[/I] wired up appropriately to allow selecting between two banks of 8K.
    zub zub February 2013 Hardware
  • The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…

    ... to use a 8K?8 EEPROM instead... unless a change was ...
    Severino Severino February 2013 Hardware
  • The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…

    ... is a 28C64, a 8kx8 eeprom, in the schematics and for ...
    Severino Severino February 2013 Hardware
  • The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…

    ... is a 28C64, a 8kx8 eeprom, in the schematics and for ...
    zub zub February 2013 Hardware
  • What Spectrum projects (Software/Games/Utility)(Hardware)(Others) are you working on?So, basically that :) You dont have to give names or more clues if you dont want to ;) Also, if you are working on more than one, you can tell all of…

    Now I am working in a project that aims to use Multiface 1 for EEPROM programming. In my first attempt I have just succeeded in writing a 28C64 EEPROM.

    I shall submit the software to WOS when it is finished.
    TK90XFan TK90XFan February 2013 Development
  • Opus discovery, helpBack again with a new help request. Lately I'm giving care at some old spectrum stuff I have set apart from old days, and today I've opened a boxed o…

    ... it fully working, reprogrammed the EEPROM with version 2.2 that ...
    Pluto63 Pluto63 February 2013 Hardware
  • Spectrum 128K +2 problemhello, i am try to repair my spectrum 128k +2 grey, i remove all ram chips and i have some new ones spares, now i have remove all ram chips, i want …

    If the ROM(s) in your Speecy are in sockets (bases), it is also possible to program a EPROM or a EEPROM chip with the RAM test software. Then remove the Speccy ROM(s) and plug in the test EPROM / EEPROM chip.

    [B][I]Mark[/I][/B]
    1024MAK 1024MAK March 2013 Hardware
  • Spectrum 128K +2 problemhello, i am try to repair my spectrum 128k +2 grey, i remove all ram chips and i have some new ones spares, now i have remove all ram chips, i want …

    ... program a EPROM or a EEPROM chip with the RAM test ... plug in the test EPROM / EEPROM chip.

    [B][I ...
    xaris_sm xaris_sm March 2013 Hardware
  • Spectrum 128K +2 problemhello, i am try to repair my spectrum 128k +2 grey, i remove all ram chips and i have some new ones spares, now i have remove all ram chips, i want …

    ... same equipment can program a EEPROM.
    If you don't ...
    1024MAK 1024MAK March 2013 Hardware
  • Spectrum 128K +2 problemhello, i am try to repair my spectrum 128k +2 grey, i remove all ram chips and i have some new ones spares, now i have remove all ram chips, i want …

    ... same equipment can program a EEPROM.
    If you don't ...
    xaris_sm xaris_sm March 2013 Hardware
  • The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…

    ... get.
    Anyway, when the eeprom and gal programmer gets here ...
    Severino Severino March 2013 Hardware
  • The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…

    ... />
    [QUOTE]Anyway, when the eeprom and gal programmer gets here ...
    zub zub March 2013 Hardware
  • Setting up an IDE HDD on the +3e helpHello, Just installed a HDD in my +3e (ROM ver. 1.11). When turning on it takes a few seconds longer but then shows 2 IDE (available) as well as 1 fl…

    ... /itm/PCB5-0E-Universal-EPROM-EEPROM-Programmer-PIC-flash-BIOS-mpu ...
    thomas3120 thomas3120 March 2013 Hardware
  • Spectrum 128k +2 grey and EPROMhi all, i am try to fix my spectrum, right now i am little on dead end... i think a good idea is to test RAM/ROM on the Spectrum so i will try to c…

    do anyone know what kind of [B]EEPROM[/B] chip i can use to burn some ROM files for the Spectrum 128k +2 grey?

    i dont want to use the 27C256 (this is EPROM) that will need special eraser

    thanks
    xaris_sm xaris_sm March 2013 Hardware
  • Spectrum 128k +2 grey and EPROMhi all, i am try to fix my spectrum, right now i am little on dead end... i think a good idea is to test RAM/ROM on the Spectrum so i will try to c…

    ... know what kind of [B]EEPROM[/B] chip i can use ...
    guesser guesser March 2013 Hardware
  • RAM Diagnostic ROMhi all, i burn this ROM from here [url]http://www.fruitcake.plus.com/Sinclair/Interface2/Cartridges/Interface2_RC_New_RAM_Tester.htm[/url] and i a…

    ... program in the ROM / EPROM / EEPROM (in the ROM socket, IC ...
    1024MAK 1024MAK March 2013 Hardware
  • RAM Diagnostic ROMhi all, i burn this ROM from here [url]http://www.fruitcake.plus.com/Sinclair/Interface2/Cartridges/Interface2_RC_New_RAM_Tester.htm[/url] and i a…

    ... program in the ROM / EPROM / EEPROM (in the ROM socket, IC ...
    xaris_sm xaris_sm March 2013 Hardware
  • RAM Diagnostic ROMhi all, i burn this ROM from here [url]http://www.fruitcake.plus.com/Sinclair/Interface2/Cartridges/Interface2_RC_New_RAM_Tester.htm[/url] and i a…

    ... program in the ROM / EPROM / EEPROM (in the ROM socket, IC ...
    xaris_sm xaris_sm March 2013 Hardware
  • PCB for romselector for toastrack/grey +2 giveawayHi guys. I've tried my hand at hardware design, and to my great surprise, my very first design worked as expected... :razz: I wanted to be able to …

    ... /> PCB is designed for FLASH EEPROM 29F040 in PLCC32 package and ...
    velesoft velesoft March 2013 Hardware
  • 2013 projects: new PlusD, DivIDE and MultifaceI have written about this before, but as I want to let these project be influenced by your opinions, I thought to create a separate topic about it. …

    ... , please add support for 16k EEPROM and possibility to switch this ...
    kpuchatek kpuchatek April 2013 Hardware
  • 2013 projects: new PlusD, DivIDE and MultifaceI have written about this before, but as I want to let these project be influenced by your opinions, I thought to create a separate topic about it. …

    ... my web page and reflash eeprom chip on real ZX with ...
    velesoft velesoft April 2013 Hardware
  • 2013 projects: new PlusD, DivIDE and MultifaceI have written about this before, but as I want to let these project be influenced by your opinions, I thought to create a separate topic about it. …

    ... my web page and reflash eeprom chip on real ZX with ... ! I'll be flashing the EEPROM as soon as I get ...
    pkersey pkersey April 2013 Hardware
  • DIVMMC, a new compact interface for ZX SpectrumAfter a long gestation period and a short period of testing, Mario Prato, member of the Italian [URL="http://apuliaretrocomputing.wordpress.com/"]Apu…

    ... ). I see only 8kB flash eeprom (same as on original divide ... . DIVIDE use chaotic connection of eeprom chip, DIVMMC use correct connection ... ). Thanks to correct connection of EEPROM we can write new fast ... writing) for install systems to EEPROM in DIVMMC. :-)
    velesoft velesoft May 2013 Hardware
  • DIVMMC, a new compact interface for ZX SpectrumAfter a long gestation period and a short period of testing, Mario Prato, member of the Italian [URL="http://apuliaretrocomputing.wordpress.com/"]Apu…

    ... jumpers and removed sram and eeprom chips from sockets (DIVIDE is ...
    velesoft velesoft June 2013 Hardware
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Related Threads

  • 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.<br /> <br /> The c…
  • Replacing +2/+3 rom with eeprom?Hi<br /> <br /> I want to change my +2a to +3e (or +2e). Garry mentions that 27C256 eprom can be used. I would like to use 28C256 instead. Pins are n…
  • Divide Eeprom - Write Protect FeatureDivIDE interface can contain two types of eeprom chip:<br /> <br /> EEPROM AT28C64 (without write protection, always rewritable)<br /> [url]http://ww…
  • Divide: problems with SNA files and upgrading EEPROMHello everybody, I am new at the forum. My name is Fernando, first of all thank you to the admins to give me access and the opportunity to participat…
  • flashing 28C256 by diagnostic board?Is it possible to flash EEPROMs 28C256 by use of the diagnostic board? Which page I have to choose for address space #4000-#7FFF?

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