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Search Again :: Adv Search 583 results in 0.001s
<1234567…20>
  • SRAM replacement for lower 16KSome time ago I wondered if it were possible to replace the lower 16K RAM of a 16K/48K Spectrum with a single SRAM chip. You know, those pesky 4116 D…

    ... /48K Spectrum with a single SRAM chip. You know, those pesky ... issue boards, ULA versions, or SRAM types. Right now, this circuit ...
    RetroTechie RetroTechie February 2009 Hardware
  • DivIDE sram problemI just finished a batch of DivIDE interfaces, but this batch has obvious problems with booting. One of the main parts that is different in this batc…

    ... this batch, is the used sram.

    A former batch ... all had Wingshing WS62256LLPG-70 sram chips, and they worked fine ...
    bverstee bverstee January 2010 Hardware
  • sram replacemnt 64KBi just developed sram upgrade for 64kb 1bit memories. small, efficient, bga :-) below picture from zx128+2. soon, i will test it in others speccys -…

    i just developed sram upgrade for 64kb 1bit memories. ... /> [IMG]http://mmj.pl/~lotharek/sram/IMG_1457.jpg[/IMG]

    [IMG]http://mmj.pl/~lotharek/sram/IMG_1459.JPG[/IMG]
    lotharek lotharek August 2014 Hardware
  • Grey +2 SRAM module - any interest ?In the same vein as Zorn's RAM replacement modules, I designed a board that replaces a bank of 8x4164 RAM IC's as used in the Grey +2 with a modern S…

    ... Grey +2 with a modern SRAM device. This came about when ...
    Peter Mulholland Peter Mulholland May 2016 Hardware
  • Pentagon interface news from VELESOFTIt's from Xagon's board. It is about new interface for Speccy - it make Your comp compatible with Pentagon (and not only) and also it gives You up t…

    ... />
    - addressing up to 1MB SRAM

    - integrated UMBRELLA (anti ... use only the
    128kB SRAM (8 memory pages which are ... of the complete 512kB/1MB SRAM.
    Then I simply turn ...
    Yerz Yerz June 2004 Sinclair Miscellaneous
  • Sintech MB03 Disk InterfaceHiya Sintech are taking Pre-Orders on an gadget called a MB03 Diskinterface The blurb is - 512 K SRAM, 32K Flash Rom, PS/2 Mouse & Keyboard suppo…

    ... is -

    512 K SRAM, 32K Flash Rom, PS/2 ...
    ZX Beccy ZX Beccy September 2004 Sinclair Miscellaneous
  • The Quest for the holy componentsHi all, I am in the need of the following components for my MB02+. Can any of you guys help me on this as I cannot find in them in my 'areas'. 1 x …

    ... -70LL 128K 8 BIT CMOS SRAM

    Anestis
    Anestis Anestis February 2007 Hardware
  • ZX 128 compatibility for SAM COUPEI develope new internal interface for SAM COUPE. This interface contain RTC compatible with original SAM BUS and MB02+, battery backed SRAM 512kB, 51…

    ... BUS and MB02+, battery backed SRAM 512kB, 512kB EPROM, new faster ...
    velesoft velesoft December 2007 Hardware
  • MB02+ software and system developmentsThe following text was (before last modification) first published here: [url]http://www.sintech-shop.com/forum/board.php?boardid=20[/url] As discuss…

    ... + without big modification (if 512k SRAM is present) with nearly all ...
    ingo ingo March 2008 Development
  • New Spectrum Computer DevelopmentHey does anyone know of any decent new Spectrum clones being developed? I find it amazing how Zilog still produce a Z80 backwards compatible chip (an…

    ... on-chip zero wait-state SRAM (up to 256KB Flash and ... 16KB SRAM). The eZ80 supports a free ...
    retrogod retrogod February 2009 Hardware
  • So what about ethernet and ZX BASIC?Well, as of about 5 minutes ago, ZX BASIC for the first time properly wrote some packets to the network! OK, so it isn't perhaps 100% what Andrew Ow…

    ... in a page of Spectranet SRAM which accumulates bytes until something ...
    Winston Winston July 2009 Hardware
  • New interface for ZXThis is my old (2004) unfinished project of internal interface for ZX Spectrum 128+2: ([url]http://velesoft.speccy.cz/hardware_in_development.htm[/u…

    ... 3 ONLY)
    512kB-1MB SRAM + 128-512kB FLASH EPROM
    SRAM, 512kB FLASH EPROM, Z80 CPU ... :[/B]
    [I]512kB-1MB SRAM with battery backup
    512kB ...
    velesoft velesoft December 2009 Hardware
  • Mass storage - why backup battery?I wasn't sure to post this under "hardware" or "development", but here goes: There are these mass storage devices for ZX Spectrum, and on many desig…

    ... a backup battery powering an SRAM. Can anyone explain what this ...
    RetroTechie RetroTechie February 2010 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 …

    ... /> + possibility use one or two SRAM 512kB chips (Pentagon 512kB / Pentagon ...
    velesoft velesoft March 2011 Hardware
  • Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…

    ... Sami?s fix Upper SRAM 32K D43256BCZ-70LL SRAM 32K.

    Mobutu Mobutu April 2011 Hardware
  • ZX Spectrum 48K clone and test resultsHi! This is my first post, so, first of all, I'd like to say hello to the whole community! I am Alessandro Dorigatti from Italy and I'm developing …

    ... mounts a real Z80, 3 SRAM chips (512K, 128K, 512K), a ...
    adorigatti adorigatti July 2011 Hardware
  • like for like 6164 sram replacement.....

    .....
    reanimator reanimator August 2011 Sales
  • A misbehaving DivIDE 57c (Now repaired)Hello there my fellow WoS'ers Indeed it has been a while since my last post, please let me wish you all a (belated) Happy New Year, my this year bri…

    ... have I changed the 32K SRAM

    so whats the ...
    Zetr0 Zetr0 January 2012 Hardware
  • Original ZX Spectrum MB02+ interface newHi all ZX Spectrum geeks. Let me offer to you legendary ZX Spectrum [B]MB02+[/B] interface. I found one piece in my cabinet during Christmas time. T…

    ...

    Description:
    - 512KB SRAM in one chip
    - 64KB ...
    LMN128 LMN128 January 2012 Sales
  • 4116 SRAM replacement (and ULA timings).As mentioned in another thread, I have spent quite a lot of time experimenting with different circuits and components for using a static RAM IC to re…

    As mentioned in another thread, I have spent quite a lot of time experimenting with different circuits and components for using a static RAM IC to replace the lower RAM 4116s in a Spectrum. I hope to post a fairly detailed report when I find time to type ...
    Zorn Zorn February 2012 Hardware
  • SIDBlaster/ZX - new soundcard for ZX-SpectrumThis soundcard is for ZX-Spectrum compatible computers. It uses in its work MOS Technology SID soundchip, which together with MOS Technology 6510 mic…

    ... (1023kHz), software switching);
    - 64k SRAM;
    - ROM - 16k (in prototype ...
    BYTEMAN BYTEMAN February 2012 Announcements
  • DivIDE Plus tech support?Hi! I'm trying to fix a damaged DivIDE Plus. The thing keeps cycling in the boot screen. As there are no schematics (besides the Diwi 212 prototype…

    ... 'm suspecting of a bad SRAM issue, but I'm not ...
    mcleod_ideafix mcleod_ideafix July 2012 Hardware
  • Stealth AllRAM SpectrumHaving just received a couple of new keyboard membranes to fix a couple of machines with, the thought crossed me that I should do a special project w…

    ... /> Pin 1 on a 32K SRAM is what needs to be ... from pin 1 of the SRAM to pin 28 (Vcc) to ... and a read pin. Basically, SRAM and ROM has the same ... .

    4. Solder the SRAM's WR pin to a ... so I could remove the SRAM and put the original ROM ...
    Winston Winston 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…

    ... the CPLD needing a external SRAM to store the palette. Of ... than the FPGA)
    Fast SRAM: 2 EUR
    [B]CPLD ...
    mcleod_ideafix mcleod_ideafix August 2012 Hardware
  • Velesoft's ZX128+2 with 1.5MB memoryMy old ZX128+2 PROFI (grey model - spanish version) for sale here: [url]http://aukro.cz/super-zx-spectrum-128-2-1-5-mb-i2738723874.html[/url] Back s…

    ... full configuration 512kB rom + 512kB sram (ideal for use system RESIDOS ... />
    - zx ram is in sram memory. 8 DRAM chips in ...
    velesoft velesoft October 2012 Sales
  • MB02+ memory tester[url]http://velesoft.speccy.cz/other/mb02-ram-tester.zip[/url] This is tester of sram 512kB memory in MB02+ interface. Data in tested memory are not…

    [url]http://velesoft.speccy.cz/other/mb02-ram-tester.zip[/url]

    This is tester of sram 512kB memory in MB02+ interface. Data in tested memory are not erased.
    velesoft velesoft January 2013 Hardware
  • Designing a Modern 'Professional' low cost ZX Spectrum ??Hi, I'm looking at designing a low cost hight performance (20MHz) ZX Spectrum... in the mould of the original, but using modern-day components. The…

    ... Z80 CPU
    128K Fast SRAM
    64K Fast EEPROM
    lezanderson lezanderson February 2013 Sinclair Miscellaneous
  • 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. …

    ... put together bespoke kits Z80+SRAM+EPROM etc and bypass ebay ... 2MHz+ 6809 CPU

    SRAM 32kx8bit to 512kx8it DIP
    lezanderson lezanderson February 2013 Hardware
  • 16K/48K Lower RAM (4116) replacement.You may want to read [URL="http://www.worldofspectrum.org/forums/showthread.php?t=37957"]this thread[/URL] for background information on the quest t…

    ... , I have found an SRAM based replacement for the lower ... levels as 74LS). The SRAM must also recognise 2.3V ... specified access time of the SRAM didn't seem to ... this. I've tried SRAM ICs with access times from ... of problems due to the SRAM latching an address or ...
    Zorn Zorn May 2013 Hardware
  • Homebrew Microcomputer design...getting ICs and stuffFor anyone interest in homebrew microcomputer design or just making add-ons and electronics gizmo's..this might be of interest. Sourcing affordable …

    ... (New old Stock). As can SRAM and EEPROMs, 32-512k.
    Lez Anderson Lez Anderson May 2013 Hardware
<1234567…20>

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  • SRAM replacement for lower 16KSome time ago I wondered if it were possible to replace the lower 16K RAM of a 16K/48K Spectrum with a single SRAM chip. You know, those pesky 4116 D…
  • DivIDE sram problemI just finished a batch of DivIDE interfaces, but this batch has obvious problems with booting.<br /> <br /> One of the main parts that is different …
  • like for like 6164 sram replacement.....
  • 4116 SRAM replacement (and ULA timings).As mentioned in another thread, I have spent quite a lot of time experimenting with different circuits and components for using a static RAM IC to re…
  • sram replacemnt 64KBi just developed sram upgrade for 64kb 1bit memories. small, efficient, bga :-)<br /> <br /> below picture from zx128+2. soon, i will test it in othe…
  • Grey +2 SRAM module - any interest ?In the same vein as Zorn's RAM replacement modules, I designed a board that replaces a bank of 8x4164 RAM IC's as used in the Grey +2 with a modern S…

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