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  • Issue 2 Failed 48k to 128k upgradeI have been trying to upgrade my Issue 2 with the help of Velesoft, using this schematic; [IMG]http://i764.photobucket.com/albums/xx284/arioch1973/4…

    ... . So I suspect now my ROM is bad. I pulled the ... rom, fired the ZX up with ... no matter if the ROM is in its socket or not.
    ROM?
    Johan1973 Johan1973 August 2012 Hardware
  • 16k Issue 2 board and DivIDE load errorsI today got an Issue 2 16k board (thank you PMSR) that i added the logic and ram on to get a 48k machine. However, I am unable to load software from …

    ... cpu to a Zilog Z80, socket the ROM, put 4164's as ...
    Johan1973 Johan1973 August 2012 Hardware
  • WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…

    ... side contains the FPGA, platform ROM, oscillator and AD724 as main ... the FPGA and the platform ROM. The other thru-hole component ... strip pin for the ULA socket.

    The design has ... nearby places from the ULA socket. Some issue 2 boards have ...
    mcleod_ideafix mcleod_ideafix August 2012 Hardware
  • Spectrum +2 EPROM in Spectrum +2AHi, My friend Marc bought a +2A from Tim Abbott at the Spectrum 30 event. Back in the day there were companies selling +2 ROMs to put into +2As to r…

    ... left socket. Put the 128K editor at 0000-3FFFF and 48K ROM ... caused that one of the ROM's to be selected all ...
    mcleod_ideafix mcleod_ideafix September 2012 Hardware
  • Spectrum +2 EPROM in Spectrum +2AHi, My friend Marc bought a +2A from Tim Abbott at the Spectrum 30 event. Back in the day there were companies selling +2 ROMs to put into +2As to r…

    ... ) in the other socket and have a 'soft' 128k ROM. Presumably there ...
    John Elliott John Elliott September 2012 Hardware
  • WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…

    ... this issue 2 board, because ROM and Z80 are socketed (and ... the MIC and the EAR socket offer a clear "beep" (EAR ... be configured by the platform ROM. Well, I have to say ...
    mcleod_ideafix mcleod_ideafix September 2012 Hardware
  • semi dead speccy 48k who can helpHi forum , i am busy recovering a 48 k speccy issue 3 board unit. With the help of a more experienced spectrum user from the uk , i managed to get…

    ... a ROM directly, as long as connections on the board (socket) are ...
    RetroTechie RetroTechie October 2012 Hardware
  • semi dead speccy 48k who can helpHi forum , i am busy recovering a 48 k speccy issue 3 board unit. With the help of a more experienced spectrum user from the uk , i managed to get…

    ... a ROM directly, as long as connections on the board (socket) are ... I think.[/QUOTE]
    The ROM used in the Spectrum has ... the decoding circuits for the ROM simple.

    EPROMs only ...
    1024MAK 1024MAK October 2012 Hardware
  • semi dead speccy 48k who can helpHi forum , i am busy recovering a 48 k speccy issue 3 board unit. With the help of a more experienced spectrum user from the uk , i managed to get…

    ... change which pin on the socket corresponds to those signals
    rom chip being selected.
    guesser guesser October 2012 Hardware
  • semi dead speccy 48k who can helpHi forum , i am busy recovering a 48 k speccy issue 3 board unit. With the help of a more experienced spectrum user from the uk , i managed to get…

    ... to verify the change in rom//eprom , and with the ... that a straight swop of rom vs eprom cannot work ... find about having both possibilities ( rom and eprom ) is to ... ) on the rom , and then plug it into the socket .
    ... i don't have a rom.

    I ...
    techy techy October 2012 Hardware
  • Help me resurrecting a 128KHello to everybody. I'm really struggling along a repair of a standard 128K a friend of mine handed me over some (ok, actually a lot of) time ago. A…

    ... /> Just desoldered IC27, put a socket and tried both a working ... :

    1) The service ROM is the one found at ...
    Falco-F8L Falco-F8L October 2012 Hardware
  • [Free] BBC MasterHopefully this thread is OK with the mods, Figuring (1) its a freebie and (2) we all like preserving older hardware anyway. Right then, I need to re…

    ... the 'free' one the Mos rom is soldered in so it ... want chopping out and a socket fitting, not a big job ...
    spider spider October 2012 Sales
  • zx spectrum 128+2a/b questionsIv just purchased a 128+2 and have only one game for it lol (Super stunt man). A few question if anyone can help.. 1)I'd like to run games through …

    1) Sound socket is an output socket, so you won't get ... , there may be minor differences (ROM versions and some modifications in ...
    Zup Zup November 2012 Hardware
  • Ay Real Time Synthetizer SoftwareSpectlemen and Spectladies!It's been a long time that I'd like to ask this.... I ask thee to create a new musical software for our ZX Spectrum machi…

    ... thinking of using the joystick socket to receive the serial MIDI ... .htm#RS232Wiring"]programming his ZXC3 ROM cartridges[/URL] using the IF2 ...
    toadstool toadstool November 2012 Development
  • Ay Real Time Synthetizer SoftwareSpectlemen and Spectladies!It's been a long time that I'd like to ask this.... I ask thee to create a new musical software for our ZX Spectrum machi…

    ... decoding etc), the +128K RS232 socket or a new interface (not ... 6 pins of the RS232 socket are connected internally; none are ... Spectrum 128 ROM 0 disassembly[/URL]:
    "The RS232/MIDI socket is ... serial data over 128K RS232 socket[/URL]

    Somebody ...
    toadstool toadstool November 2012 Development
  • Spectranet updateHi all It's been a busy summer, and in any case I've wanted a little bit of a break from doing Speccy stuff to avoid it getting old (pun intended). …

    ... main spectranet calls and the socket library. File system stuff requires ... filesystem, right? And there are ROM routines already working with them ...
    guesser guesser December 2012 Hardware
  • TKMEM - the 128K interface for 16K SpectrumsHello all! Here in Brazil, we have made a small production of an interface, totally based on Velesoft?s memory expansion ([url]http://velesoft.speccy…

    ... project and added an 128 rom. :D[/QUOTE]

    My ... external 128kB upgrade support also ROM chip connection (eprom/flash eprom ... will version with one memory socket (for sram+flash eprom) and ... next socket for AY chip ( size of ...
    velesoft velesoft December 2012 Hardware
  • Adding IDE to your Spectrum +2 A/B (or +3)Hello my fellow [B]WoS'ers[/B] [B]This is a shared thread with [url]www.amibay.com[/url] which you can [URL="http://www.amibay.com/showthread.php?t=…

    ... pins in the disc drive socket but were it possible to ... four compact flash cards - need rom rewrite too? no room for ...
    jamesrjatkinson jamesrjatkinson January 2013 Hardware
  • Adding IDE to your Spectrum +2 A/B (or +3)Hello my fellow [B]WoS'ers[/B] [B]This is a shared thread with [url]www.amibay.com[/url] which you can [URL="http://www.amibay.com/showthread.php?t=…

    ... pins in the disc drive socket but were it possible to ... four compact flash cards - need rom rewrite too? no room for ...
    Zetr0 Zetr0 January 2013 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…

    ... =kpuchatek;677263]... or add 16k ROM to divIDE and disable ZX ... ROM completely.
    This would allow ... ZX48 rom and divide system in one eeprom chip :-) EEPROM socket on ...
    velesoft velesoft January 2013 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…

    ... = faster disabling internal ZX rom = ZX rom have longer time for disconnection ... ZX48 rom and divide system in one eeprom chip :-) EEPROM socket on ... is too large for the socket ;)


    Somehow ... Spectrum owners with a NEC rom that want to install ...
    bverstee bverstee January 2013 Hardware
  • Full disk systems for ZX Spectrum?Hello. Although I don't use much more than TR-DOS, but an acquaintance of mine, a user of Atari XL/XE, always says (which is annoying and irritatin…

    ... is read from DivIDE flash ROM. From the point of view ... disk drive has its own ROM, RAM and CPU. The DOS ... Spectrum uses a high-level socket oriented protocol to perform net ...
    mcleod_ideafix mcleod_ideafix January 2013 Development
  • Adding TAP file contents to a Spectrum +3e DOS PartitionHello my fellow WoS'ers, This thread is a companion to a great little guide from a fellow AmiBayer [B]mnjnurney[/B] you can view his thread by [URL…

    ... ???[/QUOTE]

    The 48k ROM is paged in when the ... deck connected to the TAPE socket on the +3 to be ...
    Battle Bunny Battle Bunny January 2013 Games
  • 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
  • Folks with real speccies - test this!A lad from another forum has written a music demo for the Speccy, but he can only test it on ZXSpin, so needs some helpful chaps to record this to ta…

    ... beeper with such a short ROM load?'
    Then I realised ... Prodigy through the +3 ear socket :D and promptly disconnected it ...
    p13z p13z February 2013 Sinclair Miscellaneous
  • 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…

    ... DISCiPLE, 0 for the 128K ROM 0 (i.e. the one ... different to the 48K ROM).

    ROM PC Instruction
    0 ... a jump to 11CB in ROM 0, which rather than being ... 't hurt, changing the printer socket is a very good idea ...
    zub zub February 2013 Hardware
  • Adding IDE to your Spectrum +2 A/B (or +3)Hello my fellow [B]WoS'ers[/B] [B]This is a shared thread with [url]www.amibay.com[/url] which you can [URL="http://www.amibay.com/showthread.php?t=…

    ... hole just beside the power socket =(


    lol, bless ... have yet to change the ROM's LOL =)
    Zetr0 Zetr0 February 2013 Hardware
  • 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…

    ROM v2.2 is Spectrum-128 ... placed in the normally empty socket on the board inside.
    roko roko February 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…

    ... the EPROM and original ROM, and for pins that ... is connected on the board (socket?). And if necessary, modify ... some pins of a ROM may have a different ... the same pin on another ROM, this depends on manufacturer. ... handy when modifying the socket pinout to take an ...
    RetroTechie RetroTechie March 2013 Hardware
<1…15161718192021…34>

Latest Posts

  • I am currently watching.....
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