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<1234567…34>
  • Spectrum 48k won't start any software but passes all RAM testsI have a rubber key 48k which will not start any software - it appears to work perfectly right up until the end of the tape and the program would sta…

    ... a problem with the upper RAM however on running the soak ... minutes. I also performed the RAM test detailed here http://www ... longer or look for non-RAM related issues?
    britain4 britain4 October 2016 Hardware
  • +2B problem stillHi all, I have a spare +2B that still dont work. Richard kindly sent me 4 x 4464 ram chips but the +2B still dont work I have swapped over both ROM`s…

    Hi all, I have a spare +2B ... sent me 4 x 4464 ram chips but the +2B still ... slightly warm, all 4 RAM chips are cool.

    all RAM chips are ... .
    I thought that the RAM chips was the problem but ...
    swift240 swift240 July 2007 Hardware
  • 48 Issue 3b working but very hot ula and cpuSalve to everybody I bought from e*ay an Issue 3b 48k , fitted in a + case. Fixed the keyboard problem with a new keyboard membrane from good Rwap (w…

    ... the video comp output mod. All seems work good and stable ... hot too. And all ram chips are slightly warm. All these symptoms were ...
    Cignale Cignale July 2010 Hardware
  • Emulating the 128KeIt occurs to me that I wasn't frequenting WoSf when I created the 128Ke standard, which means some people haven't heard of it. Here it is: [url]http…

    ... ID because snapshots of all the legal Sinclair branded ... 48K snapshot image) or all-RAM mode is in use ...
    AY sound and all the 128 software.
    < ... 't?

    All the 48K software that requires ... +2A software that uses all-RAM mode (mostly used for ...
    chev chev April 2011 Emulators
  • Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…

    ... can now measure +5V at all the RAM chips and -4.7V ... /> - Hopeful looking RAS signals at all RAM chips (upper and lower).
    all RAM chips
    (upper and lower ... />
    - WE is ~5V at all RAM chips (upper and lower).
    Zorn Zorn November 2011 Hardware
  • Dual jstick interfaces featuring rear edge expansionsHello. The only dual-port joystick interfaces with rear edges I got are all RAM Turbos. Are there other ones featuring dual ports and a rear edge con…

    Hello. The only dual-port joystick interfaces with rear edges I got are all RAM Turbos. Are there other ones featuring dual ports and a rear edge connector that you could tell me about? Thanks.
    pkersey pkersey August 2012 Hardware
  • Very weird +2 problem.After two days, I'm still fighting this grey +2. Symptoms: When I first got it, there were stray pixels on the screen, and stray lines and colours. …

    ... machine worked (mostly). Change a RAM chip, and the display cleaned ... , and the ship went looney all over the screen, and eventually ...
    IC15
    IC16
    All RAM chips
    IC6

    C80

    Edit: All address lines, data lines and ...
    Spirantho Spirantho August 2012 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 …

    ... 128k +2 grey, i remove all ram chips and i have some ... spares, now i have remove all ram chips, i want to check ...
    xaris_sm xaris_sm March 2013 Hardware
  • Help reviving a 128 +2 GreyHello m8s, my turn to ask for some help with a +2 Grey. Got it for spares as I do have a working one but I could not resist to try and fix it. As us…

    ... memory problem, hooked a ram tester loader with Paul farrow ... gave me fault on video ram (blue border with 5 ... black paper screen. Desoldered all ram and mounted turntip sockets, ... measuring voltages at the ram pins since I don' ... the 25 to 32 ram ic was 0,2v ...
    Pluto63 Pluto63 April 2013 Hardware
  • Hardware description - DivIDE interface[B][U]DIVIDE interface / DivIDE 2k11[/U][/B] [B][U]The main description[/U][/B] DIVIDE is IDE interface with own external memory. Thanks to very goo…

    ... /> DIVIDE interface use external 32kB ram + 8kB rom memory(reflashable eeprom ... be used for eeprom emulation. All ram pages can be paged from ... as 2bit number of external ram page. Ram page is visible on ... ]

    Adressation of all DIVIDE ports is full 8bit ...
    velesoft velesoft August 2013 Hardware
  • Faulty +3Hi all Hoping this isn't the 40077 dead on my +3 but....... [IMG]http://www.darrenwileman.co.uk/SPEC/Plus3.jpg[/IMG] Tried the following in anothe…

    Hi all

    Hoping this isn' ... /> Both ROMs
    all RAM chips (socketed)

    All work fine in ...

    Any suggestions at all please guys?

    Thanks ...
    actualreality actualreality September 2013 Hardware
  • Using +3e ROMs without physically replacing internal ROM chips?Is there any external hardware available which can logically replace the internal ROMs of a +3 with, e.g. the +3e ROMs, *without* having to open up a…

    ... . Even write-protected, battery backed RAM would do the job.
    all-RAM paged modes, and the lockout ...
    u6c87 u6c87 November 2013 Hardware
  • New MEMFACE projectMEMFACE is my old project, but never finished. Now is PCB done (at the post office) and I write firmware for CPLD. MEMFACE is interface with external…

    ... (NMI) button
    - compatibitity with all ZX models, also +2A/+3 ... of old MULTIFACE devices
    - all ram features
    - rom switching 16kB ...
    velesoft velesoft November 2014 Hardware
  • SeBASIC Updated to version 3.2 by aowen...SeBASIC has just received an update!... Version 3.2 is now available, but it'll cost ya!... Its only $5 USD, and can be downloaded from here:…

    ... just 128k.

    Given all the hard work that has ... version that can loaded into all RAM memory (2A/+3).
    kgmcneil kgmcneil November 2016 Announcements
  • Restoring AY registersAfter doing (not still finished) the sna to tap converter, I'm going to try to do the same for 128k snapshots. I've got threee ideas about what to do…

    ... code).
    3.- Load RAM from 25000 to 65535. That ... loads part of RAM page 5, page 2 ... page 0.
    4.- Load RAM pages 1, 3, 4, ... ](*)[/b]
    6.- Load RAM addresses from 23296 to 24999 ... were executed in +2A/+3 all-ram mode (to stop transfers ...
    Zup Zup April 2018 Development
  • Crasched Spectrum+ 128, HELP!Hi! I recantly bought a Sinclair Spectrum+ 128 on a seconhand store. It shows random colour squares spread over the screen, mostly the upper part a…

    ... />
    I'm now desoldering all ram's and will replace them ...
    Charles Bigstone Charles Bigstone September 2003 Sinclair Miscellaneous
  • EmuZWin supports 256 color gamesI am sorry starting new topic, but you see this info is important a bit: new version 2.4 of the EmuZWin is available to download, and it supports 25…

    ... I also check the " view all ram banks" button.
    If it ...
    Arm73 Arm73 April 2004 Emulators
  • Can Anyone explain sprites in Jet Pac/Atic Atac etcJet Pac was 16k, and yet the sprites were impressively fast. I notice they had a slight flicker at times, but were notmally pretty flicker free. W…

    ... ]huge[/B] unrolled loops and all RAM would be contended. ;)
    AndyC AndyC September 2004 Development
  • Announce: EmuZWin 2.5 Release 2.2 Post-FinalEmuZWin Version 2.5 Release 2.2 post-FINAL (16-Oct-2004): [-] A small pause added between TAP blocks while loading tape from .TAP image (otherwise s…

    ... Editor
    - Enable option " View all ram banks "
    - Activate Sprite finder ...
    - Scroll Sprite finder window all the way to the bottom ... , PentiumIV/2.80GHz, 512 MB ram , Nvidia Geforce 6800 GT
    Arm73 Arm73 October 2004 Emulators
  • ZX-81 Ram Pack problemHi! I know this is a ZX Spectrum forum, but I am hoping someone here might be able to help me out... I have posted this to c.s.s. but noone was able…

    ... the ROM?

    POKE all RAM with a VALUE 1,
    Dr BEEP Dr BEEP September 2005 Sinclair Miscellaneous
  • Bug in EMUZWINIt's quite minor actually and is in the Assembler. Ocassionally when assembling the ASM gives the wrong address to a label. For instance I used the l…

    ... /> opened it,the basic (maybe all ram )seems resetted (and the command ...
    paolo z paolo z November 2005 Emulators
  • Papaya Labs shop open for DivIDE pre-orders.Papaya Labs are now taking pre-orders for DivIDE interfaces and other DivIDE accessories. Find their shop at [url]http://www.papayalabs.co.uk/shop/[…

    ... similar. Long games, which use all RAM...
    'Serious' usage of Speccy ...
    piters piters August 2006 Hardware
  • Papaya Labs shop open for DivIDE pre-orders.Papaya Labs are now taking pre-orders for DivIDE interfaces and other DivIDE accessories. Find their shop at [url]http://www.papayalabs.co.uk/shop/[…

    ... +3 specific games running in all-ram mode would cause problems but ... were tougher to support in all their varieties but they load ...
    baze baze August 2006 Hardware
  • How are people developing?Are most coding on actual HW or under emulation, or cross developing?

    ... 's ROM to not deleting all RAM after crash and add NMI ...
    piters piters September 2006 Development
  • How are people developing?Are most coding on actual HW or under emulation, or cross developing?

    ... 's ROM to not deleting all RAM after crash and add NMI ...
    rich_chandler rich_chandler September 2006 Development
  • The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…

    ... out the ROMs to an all RAM mode from the factory. This ...
    JamesD JamesD October 2006 Sinclair Miscellaneous
  • The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…

    ... out the ROMs to an all RAM mode from the factory. ... re talking about adding 16k RAM internally to put in ... interrupt modes.

    * All I/O would have been ... and any of the 128k RAM.

    The ... No because they were made all over the place and there ...
    Alcoholics Anonymous Alcoholics Anonymous October 2006 Sinclair Miscellaneous
  • 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…

    ... a couple more things than RAM, but if the machine ... sequence makes the CPU fill all RAM with 02 hex, then ... lower RAM.

    I had a non-booting (at all!) ... CPU would not even test RAM) or even the EPROM ... the lower eight 16Kx1 RAM chips with a single ...
    Marcelo Marcelo January 2007 Hardware
  • problem with sinclair zx 48 issue 6aHi all, I have the following problem when I turn on my sinclair without rom inserted. [url]http://217.79.64.145/sinclair/5.jpg[/url] when I turn o…

    ... have.

    First, check all RAM supplies are OK: The 4116 ... 6A clone has more modern RAM chips which only need +5 ...
    Marcelo Marcelo January 2007 Hardware
<1234567…34>

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