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Search Again :: Adv Search 1000 results in 0.019s
<1234567…34>
  • Test single ram chips?Is it possible to test single ram chips? Micky

    Is it possible to test single ram chips?


    Micky
    -Micky -Micky January 2010 Hardware
  • 128K+2A/+3 RAM layoutDoes anybody know how physical RAM is mapped to ZX 128k+2a/+3 address space ? There are four 64Kx4 chips IC4-IC7. IC4-IC5 seems to be contended (vide…

    ... know how physical RAM is mapped to ZX 128k+2a/+3 address ... be contended (video RAM). It would mean RAM banks 4-7
    RAM test program, can be on ROM ...
    kpuchatek kpuchatek July 2011 Hardware
  • Spectrum 128k +2 grey RAMhi all, the manual say that ram ic's should be KM4164B-15P but when i open my spectrum (not repaired by anyone) the ram chips was KM4164B-12 is thi…

    ...
    the manual say that ram ic's should be KM4164B-15P ... repaired by anyone) the ram chips was KM4164B-12
    ram?

    something ... issue 2 zx with RAM chips IC 6-13
    ... D416C

    can i test KM4164B-12 with the 48k ...
    xaris_sm xaris_sm March 2013 Hardware
  • Redesigning the ZX Spectrum 128k - A lifelong dreamHello, I am myPinballs (Jim) and i run a small business here in the uk making replacement 8-bit hardware pcbs for arcade pinball games as well as…

    ... board for the zx spectrum 128k for the last 18 ... br /> • 8 pages of 16k ram 128k total
    • High quality ... the 128k ULA IC - Ferranti 7K010E/Amstrad 40056
    • Full set of test ... Finally some videos with classic 128k music (similar to the wonderful ...
    myPinballs myPinballs August 2016 Hardware
  • Toastrack/Grey +2 physical memory layoutI'm looking to extend the functionality of the test ROM used with Winston's diagnostic board to also properly test the RAM of toastrack and grey 128K…

    ... the functionality of the test ROM used with Winston ... also properly test the RAM of toastrack and grey 128K machines.
    IC's that are suspect ... br /> [B]+2:
    [/B]RAM is in positions IC17-IC32 ... direction are bits mapped to IC's (e.g. ...
    balford balford February 2014 Hardware
  • Sinclair Spectrum System Test Rom CartridgeSinclair Spectrum System Test Rom Cartridge. [url="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=50224&item=8106735040&rd=1&ssPageName=W…

    Sinclair Spectrum System Test Rom Cartridge.

    [url=" ... Test, a Sound Test, a Colour Test, a Flash Test, a RAM Test and a Soak Test ... interpret the results of each test.

    The cartridge itself ...
    wadsterboy wadsterboy May 2004 Sales
  • Developers developers developers developers developers!OK, I think it's at a stage where someone else can also have a go at doing things with the Spectranet. If you've not been following the hardware foru…

    ... , with TCP/IP support, and 128K of flash ROM (which is ... Spectrum in software) and 128K of static RAM. You just know you ... a real working Spectrum (48K, 128K or one of the Amstrad ... I've written as a test, or perhaps something completely new ...
    Winston Winston October 2008 Development
  • TESTROM3 - utility/rom for test your ZXHere is TESTROM3 utility as 16kB ROM file + flasher for install this rom to divide eeprom (or mapram mode). Work also on ZX Spectrum without ROM and …

    ... basic with enable 128kB ram)

    TEST 128kB MEMORY
    =================
    test of all 8 ram pages (during test sign in ... /> TEST FAST RAM
    =============
    Test only fast ram memory (32768-65535). During test show ...
    velesoft velesoft August 2012 Sinclair Miscellaneous
  • bizarre error on a grey ZX Spectrum+2 - the long search for a small problemHi, I got a ZX Spectrum+2 that worked a bit but crashed while loading or running 128k games. I installed a 128k-test-ROM that told me about RAM fa…

    ... installed a 128k-test-ROM that told me about RAM failure at ... 3. I desoldered 8 RAM chips that included page 3 ... to be located in several RAM cells not one complete ... I removed the second 8 RAM chips - to save time ... seem to work. The 128k test ROM did not find any ...
    ingo ingo November 2016 Hardware
  • UlaI remplaced an ULA 6c001-6 by an ULA 6c001-7 chip on issue 3B board. It is "crucial" to remove R32 and adding the 2x NAND gates ??? or not ? Thanks.

    ... for Christmas and I'll test my TC2048s. If both computers ... heat dissipation ;) .It's one IC RAM version and also has one ...
    Gods Gods June 2007 Hardware
  • How about making a diagnostic program for 128k speccys?Hi guys, I was just chatting with DEATH today about a problem i had with my 128 heatsink spectrum and the need for a 128k speccy diagnostic program …

    ... bank of RAM to a given position on ANY 128K machine? I ... the top of the RAM map, test the RAM like Geoff's great ... it again until all the RAM has been gone through in ...
    DEATH DEATH July 2007 Development
  • Speccy 128 QuestionMainly for the experienced speccy resurecters around these parts. Have you ever had a Speccy 128 with a borked TEA2000 video chip? The reason I ask…

    ... fishy going on with the RAM thats for sure. Keep ... a 128K tester ROM to it to give the RAM a thrash test ... program in basic to test the RAM and it came up ... wont load or run any 128K games, the graphics in ... is a stuffed nugget of RAM at whatever location stores ...
    Womble Womble April 2008 Hardware
  • AY Box for 16k/48k spectrums[img]http://tcg.speccy.cz/zoom/pictures/ay.png[/img] Just stumbled upon this and wondered if another can confirm this scheme as working. If so I'm of…

    ... with test of RAM. If a 48K game was loaded on on 128K ... (in opposite to omnipresent ZX 128K) and they program for AY ... the same ports like in 128K.

    For now I ...
    Mister Beep Mister Beep September 2008 Hardware
  • Jetpac questionHi all, I just bought a copy of Jetpac off of Ebay and I'm having problems. To start, I'm trying to play it on an issue 2 Speccy with Interface 1, 2 …

    ... first does a preliminary test to determine if the ... then a second full RAM test by writing $00 and ... anyway. (The above 80K test program only tests memory ... my program does not test extra RAM of the 80K ... />
    It does not test 128K RAM.

    Once one ...
    Digital Prawn Digital Prawn January 2009 Games
  • Spectrum +3 suspected memory faultHi, I've been using my +3 for the first time in a while and found that some games have problems with the display becoming corrupted and sometimes cr…

    [QUOTE=Winston;405672]There is a 128K memory testing program, I'd suggest you search for it.....[/QUOTE]

    So, the test mode, does not 'completely' test the RAM?

    Chris
    xc8 xc8 December 2009 Hardware
  • ULA snowHow is this feature implemented in emulators ? And how exact is the emulation ? I somehow supposed that ULA snow is something that is not very determ…

    ... >= $C0 and a contended RAM page is paged in (1 ... = $F1 and all my 128K games use RAM 1 and 3. So ... I'm guessing most of my 128K ... had the means to actually test this, as I don't ...
    na_th_an na_th_an March 2012 Emulators
  • ULA snowHow is this feature implemented in emulators ? And how exact is the emulation ? I somehow supposed that ULA snow is something that is not very determ…

    ... = $F1 and all my 128K games use RAM 1 and 3. So ... I'm guessing most of my 128K ... had the means to actually test this, as I don't ... this knowledge to make a 128k library for everyone so that ...
    Timmy Timmy March 2012 Emulators
  • 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…

    I got a new test software for the ... br />
    With the test eeprom from velesoft I removed ... />
    I have every IC socketed now. And I have ... that signals are reaching lower ram on the right pins. ... what else to test.

    Lower ram simply is not ...
    Johan1973 Johan1973 August 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…

    ... Another quick update: burned a 128K test EPROM from Fruitcake, ran the ... contended RAM bank chips, and each time the test EPROM ... works correctly (otherwise the test could have not run altogether ... (therefore accesses correctly the RAM bank), then the only ...
    Falco-F8L Falco-F8L October 2012 Hardware
  • Spectrum 128k +2 grey RAMhi all, the manual say that ram ic's should be KM4164B-15P but when i open my spectrum (not repaired by anyone) the ram chips was KM4164B-12 is thi…

    ... br />
    You can test a RAM chip by replacing 1 chip ... chance of killing that RAM chip.
    If ... to take out that RAM chip and one or ... RAM chip swapping adventure? :-o[/QUOTE]

    so i cannot test ... do you know a cheap ic replacement for the km4164b- ...
    xaris_sm xaris_sm March 2013 Hardware
  • Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…

    ... ;693480]Street Hawk after loading test 128kB ram, why ? Exist any version ... they were going to release 128K version but they didn't ...
    ikci ikci April 2013 Games
  • another faulty zx spectrum +2 to fix!!!Hello to all, I'm new here... I have got a faulty +2 (gray) and start to try fix it... I have read the treads of xaris_sm and Pluto63 as background…

    ... ram ic number 32 backwards, that is in your case ram ic ... 30, you have to get all ram ic 25 ... -32 to working to see the next test ... put and remove the new ram ic's i bought
    ... change ic 30 the stripes count indicate another faulty ic ram
    xaris_sm xaris_sm May 2013 Hardware
  • Harlequin 128k??Hi peeps... I've seen that you can do a 128k version of the Harlequin board. Is it just the standard board with different chips or is it a dif…

    ... an divIDE57c could you please test to run the program Boovie2 ... original ZX Spectrum computers (48k, 128k heatsink and grey +2) do ... use a NMOS CPU and 128k SRAMs from BSI. Using CMOS ... .
    An 128k Test-ROM I used found no RAM error nor any ...
    ingo ingo November 2016 Hardware
  • c64 .sid player coming soon to specy 128!!!c64 .sid player coming soon to specy 128!!! the first old version uses only square waves, 4 years ago: https://www.youtube.com/watch?v=6CKt9noxA7s…

    ... (48k rom) to ROM1 (128k syntax checker). RAM banks stay at 5 ... /> ROM 0: 128k editor, menu system and self-test program
    ROM ... 1: 128k syntax checker
    FrankT FrankT March 2017 Announcements
  • c64 .sid player coming soon to specy 128!!!c64 .sid player coming soon to specy 128!!! the first old version uses only square waves, 4 years ago: https://www.youtube.com/watch?v=6CKt9noxA7s…

    ... (48k rom) to ROM1 (128k syntax checker). RAM banks stay at 5 ... /> ROM 0: 128k editor, menu system and self-test program
    ROM ... 1: 128k syntax checker
    Geco Geco March 2017 Announcements
  • emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…

    ... speccy doesnt support the 128k features extra ram audio?
    there is ...
    Roger Jowett Roger Jowett September 2010 Emulators
  • Interfaces & ROMsHi everyone, I'm currently looking into the various modern interfaces for the Spectrum to allow me to run all my games from an SD card. I have a few…

    ... different ROMs, for example to test the Spectrum.

    test the RAM from it. I'd ... [LIST]
    [*]OFFICAL TEST PROGRAMS
    [*]SPECTRUM 128 RAM TESTER
    [*]SPECTRUM ... br />
    The official test program is available as tzx ...
    Tekno Venus Tekno Venus August 2014 Hardware
  • Memory testersHi, Just wondering which software people are using to test the memory in their spectrum. I have been using Zorn's memory tester as described here:…

    ... software people are using to test the memory in their spectrum ... to replace the ROM to test the ram).

    Cheers ...
    vext01 vext01 July 2015 Sinclair Miscellaneous
  • 48K Issue 3B slowly fading over 15-20 seconds, capacitor gets hot.Hi folks, Recently my much-modified* RAM testing 48K board failed with a hot/burny smell so I turned it off quickly for looking at later. Thinking…

    ... />
    Recently my much-modified* RAM testing 48K board failed with ... on IC7 so I can test 4116 RAM chips, it's happily ...
    witchy witchy August 2019 Hardware
  • Ecstasy & AgonyWhile checking out the area around Chennai Central station on Sunday, I came across this crowded narrow road taken up entirely by roadside vendors se…

    ... means you literally push the test IC over the top of the ... />
    about spare IC's - the only IC you stand a chance ... ) spares of virtually all the IC's on the spectrum, including ...
    GP GP March 2004 Sinclair Miscellaneous
<1234567…34>

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