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<1234567…34>
  • Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …

    This is external memory upgrade for ZX ... /> Features of this upgrade:
    + connect external memory to adress space 32768 ... -65535 in your ZX Spectrum
    + memory upgrade ... br /> [B]+ all external ram pages are fast (ULA ...
    velesoft velesoft March 2011 Hardware
  • Memory upgradeHi! I bought a 16K rubber key Spectrum. It's said in the box and memory test program also said it's 16K machine. Strange thing is that there is yell…

    ... said in the box and memory test program also said it ... (so no soldering needed) for memory upgrade. There is also 4 empty ... have to do if i upgrade 16K-->48K? Motherboard is ...
    lillaolle64 lillaolle64 October 2010 Hardware
  • DIVIDE with 512kB memory upgrade for saleI sell DIVIDE (original version 57c) with my memory upgrade to 512kB ram. [img]http://velesoft.speccy.cz/other/divide512-smallpic.jpg[/img] More in…

    ... (original version 57c) with my memory upgrade to 512kB ram.

    I sell only divide with memory upgrade and plastic case. Not contain ...
    velesoft velesoft January 2011 Hardware
  • External memory upgrade for ZX16/48[url]http://velesoft.speccy.cz/zx/external_128kb_upgrade/index.htm[/url]

    [url]http://velesoft.speccy.cz/zx/external_128kb_upgrade/index.htm[/url]
    velesoft velesoft January 2009 Hardware
  • Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …

    ... .[/QUOTE]

    It's external memory upgrade (your ZX don't need ... contain only 16kB ram). This upgrade will similar as this:
    velesoft velesoft March 2011 Hardware
  • Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …

    [QUOTE=velesoft;519643]This is external memory upgrade for ZX Spectrum models with ... />
    Features of this upgrade:
    + connect external memory to adress space 32768 ...
    velesoft velesoft March 2011 Hardware
  • Divide plusJust ordered one. Wonder if memory intensive games designed for russian clones can be run on 128 speccys taking advantage of the extra chips present?

    ... .

    1) external memory upgrade for ZX16(or for ZX48 ... easy modification). This upgrade increase memory to 128kB, 512kB ... external upgrade is impossible use second videoram as on ZX128, but memory ... ZX128+2. This is memory upgrade to Pentagon 128 and ...
    velesoft velesoft November 2011 Hardware
  • The SAM CoupeDoes anyone own one of these? I remember being jealous of a friend who bought one of these machines which had a disk that made the system compatible …

    ... additional AY music in 128kB memory pages. This conversion for SAM ... /512/1024 must be connect external memory upgrade ( [url]http://velesoft.speccy.cz ...
    velesoft velesoft November 2011 Hardware
  • DivIDE & upgraded ZX SpectrumsI have had some 16K ZX Spectrums during the last years that I upgraded to 48K. I estimate I did about 8 of these upgrades until now. But almost all …

    ... ]

    You use internal upgrade (add next 8 dram chips ... add static ram 32kB or external memory upgrade ?
    velesoft velesoft June 2012 Hardware
  • DivIDE & upgraded ZX SpectrumsI have had some 16K ZX Spectrums during the last years that I upgraded to 48K. I estimate I did about 8 of these upgrades until now. But almost all …

    ... =velesoft;636739]You use internal upgrade (add next 8 dram chips ... add static ram 32kB or external memory upgrade ?[/QUOTE]

    The 8 ...
    bverstee bverstee June 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…

    ... />
    If you connect this external memory upgrade to ZX with 48kB then ... between internal dram chips and external sram chip. Both chips can ...
    velesoft velesoft January 2013 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…

    ... original ZX Spectrum 16kB then external memory upgrade is full usable without ZX ...
    velesoft velesoft January 2013 Hardware
  • Didaktik Gama and M manualsI?m looking for manuals for the Czech Spectrum clones Didaktik Gama and M. Thought this would be an easy task, but I couldn?t find any user or servic…

    ... (without any internal modifications) via external memory upgrade to 100% compatibility with Didaktik ...
    velesoft velesoft August 2013 Hardware
  • INTERFACE 2 - light versionSmall interface (adapter) compatible with INTERFACE 2. Contain only slot for IF2 cartridges and reset button (for rubber speccy). Not contain joystic…

    ... (ZX128 rom replacement, external memory upgrade for ZX16, MB02 memory, D/A converters, etc ...
    velesoft velesoft September 2013 Hardware
  • INTERFACE 2 - light versionSmall interface (adapter) compatible with INTERFACE 2. Contain only slot for IF2 cartridges and reset button (for rubber speccy). Not contain joystic…

    For external memory upgrade is also good this interface ( ... modified A15 line for next external devices for disable memory access.
    velesoft velesoft September 2013 Hardware
  • Issue 1 32K Memory Upgrade neededHi folks, as the title suggest im looking for the original sinclair memory board to make it 48k from 16k. Any other form will do or even instructions…

    ... looking for the original sinclair memory board to make it 48k ...
    ZX-MAD ZX-MAD March 2007 Wanted
  • Disable onboard memoryWould this work...? Access to onboard I/O can be disabled by holding IORQGE high. Would it be possible to create a MEMRQGE in a similar way to disa…

    ... way to disable all onboard memory - like ROMCS but for the ... whole memory map?

    Translating the ... piece of on-board memory and map external memory over it. CP/M ...
    Jonathan Harston Jonathan Harston June 2007 Hardware
  • converting ZX128 software for SAM COUPESAM COUPE is computer compatible with ZX48 model. Use same ports, same keyboard with compatible membrane, 64kB adress space with possibility connect …

    ... memory upgrade is connect !!! Yes, it's very very easy. 1MB external memory ... for SAM COUPE enable also memory paging ... ZX color palette , enable external memory in high 32kB, set ... br /> Additional info about 1MB memory and AY ports:
    - ...
    velesoft velesoft April 2010 Games
  • ZX81 Internal Memory UpgradeAnyone here ever done it? Im looking to add 16k of internal memory, pretty sure I know how to do it, just what parts do I need? (and where to get t…

    Anyone here ever done it? Im looking to add 16k of internal memory, pretty sure I know how to do it, just what parts do I need? (and where to get them?)
    Macc Macc March 2012 Sinclair Miscellaneous
  • Spectrum rubber key memory upgradeIf a 16k spectrum has a 32k fox upgrade kit installed anyone any idea what board revision we would be expecting to find in this machine? And was this…

    If a 16k spectrum has a 32k fox upgrade kit installed anyone any idea what board revision we would be expecting to find in this machine? And was this an after market kit or one offered by sinclair?:grin: FANX
    zedexspectrum zedexspectrum July 2014 Hardware
  • AmericaI've been wondering, was the Spectrum released in America? Was it popular? Are there Spectrum games that were made in America? There must be a few A…

    ... 16MB upgrade? o_O[/quote]

    Considering the cost of memory ... supports an infinite expansion via external memory. The 48k Spectrum had ... BEU which would manage this external memory and allow up to ... output made it a worthwhile upgrade to the 48k Spec ...
    Alcoholics Anonymous Alcoholics Anonymous August 2004 Games
  • Spritual successor to the Speccy1988-1995 - Atari ST/STe/Falcon 1995-2000 - ? hmmm ? 2000-2006 - Playstation 2 with a keyboard 2007- ?

    ... to get another perhaps compulsory upgrade - and even with new hardware ... software support over the years - external memory, speech synth, other sound hardware ...
    Quazar Quazar March 2007 Sinclair Miscellaneous
  • FAST and SLOW .TAP loading in RESIDOSWhy is in RESIDOS this TAP file loaded always too slow ? (with lines in border area). Other TAP files on my drive is fast loaded, but loading this fi…

    ... can in ROM area disconnect external memory and use original ZX rom ... button is ignored (my Divide upgrade not use reset of MB02 ... at begin of all RESIDOS memory pages insert switch to correct ...
    velesoft velesoft May 2008 Development
  • FAST and SLOW .TAP loading in RESIDOSWhy is in RESIDOS this TAP file loaded always too slow ? (with lines in border area). Other TAP files on my drive is fast loaded, but loading this fi…

    ... can in ROM area disconnect external memory and use original ZX rom ... button is ignored (my Divide upgrade not use reset of MB02 ... at begin of all RESIDOS memory pages insert switch to correct ...
    glancaster glancaster May 2008 Development
  • more memoryi dunno if this has been mentioned, apologies if it has (i cant be arsed to search :P) Ive just been reading about the zx81 and it popped into my he…

    ... />
    Exist this external "RAMPACK" for ZX16kB (or ... br /> Or exist external memory upgrades, but with memory paging in low 16kB ... be used any interface with external memory (MB02+, DIVIDE, DIVIDE ... /> Or this my upgrade (only 1MB ram memory):
    [url] ...
    velesoft velesoft January 2010 Hardware
  • converting ZX128 software for SAM COUPESAM COUPE is computer compatible with ZX48 model. Use same ports, same keyboard with compatible membrane, 64kB adress space with possibility connect …

    ... COUPE if 1MB memory upgrade is connect !!![/QUOTE]
    Using external RAM has ... to not enough people owning external memory. Though with more people using ...
    obo obo April 2010 Games
  • Found an old project of mine today[url]http://i1210.photobucket.com/albums/cc418/reanimator1971/DSCF1382.jpg[/url] i started this about 6 years ago and found it after sorting through …

    ... />

    2. A 512K memory upgrade
    3. Internal MP3 Player ... the 3" drive into an External Chassis.
    6. [url=http ...
    Zetr0 Zetr0 March 2011 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…

    ... /> My old version of external 128kB upgrade support also ROM chip connection ... interest will version with one memory socket (for sram+flash eprom ...
    velesoft velesoft 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…

    ... impossible. External memory can't contain videoram. This is easy upgrade based on ...
    velesoft velesoft January 2013 Hardware
  • +3 upgrades?Hi this is my first post on becoming a member of this forum and I'm hopeful and excited about some of the hardware I have found. Hi I found my old …

    ... help, would I need to upgrade the ROMs to A 5e ... . There is no need for external memory chips because all the code ...
    guesser guesser February 2014 Hardware
<1234567…34>

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  • 16-48k memory upgradesince yesterday i am the proud owner again of a spectrum in excellent condition, boxed, etc. it was my first computer back in '82 as well, so it's ni…
  • Issue 1 32K Memory Upgrade neededHi folks, as the title suggest im looking for the original sinclair memory board to make it 48k from 16k. Any other form will do or even instructions…
  • Memory upgrade for original DIVIDE[url]http://velesoft.speccy.cz/zx/divide512/[/url]<br /> <br /> VEESOFT
  • Memory upgradeHi!<br /> <br /> I bought a 16K rubber key Spectrum. It's said in the box and memory test program also said it's 16K machine. Strange thing is that t…
  • DIVIDE with 512kB memory upgrade for saleI sell DIVIDE (original version 57c) with my memory upgrade to 512kB ram.<br /> <br /> [img]http://velesoft.speccy.cz/other/divide512-smallpic.jpg[/i…
  • Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …
  • Fox Spectrum Memory Upgrade on Ebay soonHers a link to pics<br /> <br /> [url]http://i1182.photobucket.com/albums/x460/buttark/Ebay/Sinclair/IMG_3001.jpg?t=1306082131[/url]<br /> <br /> [ur…
  • ZX81 Internal Memory UpgradeAnyone here ever done it? Im looking to add 16k of internal memory, pretty sure I know how to do it, just what parts do I need? (and where to get t…
  • 32k memory Italian memory expansionNot mine but its an [URL="http://www.ebay.co.uk/itm/TENKOLEK-32K-RAM-Expansion-Sinclair-ZX-Spectrum-/320861810075?pt=UK_VintageComputing_RL&amp;hash=…

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