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Search Again :: Adv Search 38 results in 0.000s
<12>
  • DRAM (:baffled:)Hi, Can someone explain to me the definitive rules on DRAM access times in terms of suitability for a particular speed of processor? Specifically, …

    ... cause problems.

    The 150ns 4464s I use in my ...
    Phu Phu January 2008 Hardware
  • 4116 DRAM for 48KSomeone told me I got faulty RAM in my broken 48K. They should be 150ns, right? What would be a good place to buy them from?

    Someone told me I got faulty RAM in my broken 48K.
    They should be 150ns, right?
    What would be a good place to buy them from?
    orange orange December 2008 Hardware
  • Anyone have any tms4532-15NL3 chipsHello all, I am looking for some tms4532-15nl3 chips, I don't mind used as long as you think/know they are working. I can swap some 4116 chips like …

    ... /> EDIT: Actually any 4164 200/150ns chips


    Many ...
    hedge hedge December 2010 Wanted
  • 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…

    ... in my 1983 ts2068 were 150ns DRAMs; two years later they ...
    Alcoholics Anonymous Alcoholics Anonymous October 2006 Sinclair Miscellaneous
  • Wanted 10 - 4116 Ram ChipsHi Can any one help I am trying to get hold of 10 4116 RAM chips for a 48K Spectrum. Does any one know who might stock them. I can get a minimum of …

    ... /> "4116 - Dynamic RAM NMOS 16kx1 150nS 16-pin"

    or ...
    Pilsener Pilsener March 2007 Wanted
  • Wanted 10 - 4116 Ram ChipsHi Can any one help I am trying to get hold of 10 4116 RAM chips for a 48K Spectrum. Does any one know who might stock them. I can get a minimum of …

    ... /> "4116 - Dynamic RAM NMOS 16kx1 150nS 16-pin"

    or ...
    DEATH DEATH March 2007 Wanted
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... , a HM4864AP-15 is a 150ns DRAM, but a TMM2016P1-70 ...
    Marcelo Marcelo March 2007 Hardware
  • 4116 and 4164 chipsI've just found the following supplier for 4116 and 4164 RAM chips. about $0.80 each.. not bad. [url]http://www.jameco.com/[/url] It's a US site. I…

    ... means a memory speed of 150ns, the rest after that usually ...
    Winston Winston November 2007 Hardware
  • Snow on screen of 48K Speccyok you wizards I fixed up my 4116 ram issue as Winston and McLeod advised me before by replacing with 4164's.... all I could find here in Singapore (…

    ... pins, some are 250ns, some 150ns, but the speccy is running ...
    nuggetreggae nuggetreggae October 2009 Hardware
  • memory chips spectrum +Hi with regards to memory chips the ones in there are tms4116 in the lower memory.there is some on ebay MCM4116BP20 can i mix these with tms ones or …

    ... /> The service-manual states that 150nS chips are the right ones ...
    Pilsener Pilsener January 2010 Hardware
  • memory chips spectrum +Hi with regards to memory chips the ones in there are tms4116 in the lower memory.there is some on ebay MCM4116BP20 can i mix these with tms ones or …

    ... ,4116-3,4116-4 ( 120ns, 150ns,200ns, 250ns)

    Bye ...
    Jose_Leandro Jose_Leandro January 2010 Hardware
  • 4116 ram chipsI need some ram chips to fix my 48k + issue3b, I have done the composite video mod and it works, now i just wanna play games on it but its stuck on r…

    ... no issues. I assume that 150ns parts were fitted to the ...
    fog fog January 2010 Wanted
  • memory chips spectrum +Hi with regards to memory chips the ones in there are tms4116 in the lower memory.there is some on ebay MCM4116BP20 can i mix these with tms ones or …

    ... /416-3/MN5290-2 4116 150ns


    You put ... UPD416-3 chips is a 150ns :-O

    bye
    Jose_Leandro Jose_Leandro January 2010 Hardware
  • memory chips spectrum +Hi with regards to memory chips the ones in there are tms4116 in the lower memory.there is some on ebay MCM4116BP20 can i mix these with tms ones or …

    ... be that the only reason 150ns parts are fitted as standard ...
    zx2628 zx2628 January 2010 Hardware
  • Looking for some 48k RAM (upper 32k bank)Greetings, I was wondering where I could find some upper RAM for a 48k (issue 4A). It's the Texas Instruments TMS4532-20NL4 P8419 (or any compatib…

    ... .[/quote]
    Go for 100/150ns if possible. If not, 200ns ...
    mcleod_ideafix mcleod_ideafix February 2010 Hardware
  • Spectrum hangs upWhat might be problem when my ZX Spectrum 48K (rubber keys) hangs up after few minutes play? It had memory problems but i changed (or an expert did i…

    And about those upper memory chips: only text in chips are M5K4164ANP 54821X -15
    For me it tells only that chips model is 4164 and they are 150ns(?)
    Ippe
    lillaolle64 lillaolle64 August 2010 Hardware
  • zx spectrum +2 troubleshootingHi There I am new here and I need some advise as to where to look for issues on my zx spectrum +2 it was working fine this morning .. then while pl…

    Any 4164 memory, with 150ns or less, will do the job. You can also use 41256 chips, as they are pin-compatible. For the later, connect pin 1 to pin 16 (GND).
    mcleod_ideafix mcleod_ideafix October 2010 Hardware
  • Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…

    ... access data faster than the 150ns speed rating of the 4116 ...
    Winston Winston December 2010 Hardware
  • What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…

    ... cycle). The RAMs used have 150ns of access time, so 280ns ...
    mcleod_ideafix mcleod_ideafix December 2011 Hardware
  • Issue 3B only sees 16k (and RAMTOP NO GOOD on loading)A ZX+ with issue 3B board that i got recently, does not see anything more than 32768 (sometimes 37267..) on "PRINT PEEK 23732 + PEEK 23733 * 256 (Ent…

    ... top etc.?[/quote]
    Use 150ns or faster chips. Don't ... recommend to you to buy 150ns chips or faster. For upper ...
    mcleod_ideafix mcleod_ideafix March 2012 Hardware
  • Pentagon RAM memoryDoes anybody know or have reference to technical docs, how no contention on RAM access is achieved in Pentagon 128K clone ? Looking at schematics it …

    ... if not all ZXes have 150ns 4116 chips. The trick has ...
    kpuchatek kpuchatek October 2012 Hardware
  • Difference between brands of 4164 chips?I have gotten my hands on a batch of several brands of 4164 chips. Examples are NEC D4164C-3 and Mitsubishi M5K4164ANP-15. Anyone knows if any type …

    It just comes down to the speed of the devices, so as long as they are fast enough.

    Guessing by the product id's you may have 300ns and 150ns devices? (On the train so can't check ! )
    csmith csmith February 2013 Hardware
  • What do this modification ?Hi All, I get from ebay black 2a, I open to clean case and show ... this [IMG]http://forest.no-ip.org/wos/2a.jpg[/IMG] what do this modification ? …

    ... ns = 169ns . Are original ROMs 150ns chips?
    - RAM timmings are ...
    mcleod_ideafix mcleod_ideafix April 2013 Hardware
  • 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…

    +2 has 4164B-150ns chips, so I don't ...
    kpuchatek kpuchatek May 2013 Hardware
  • Which ULA?Just a quick question, more of interest rather than immediate need... I am thinking ahead about the repair of an Issue 2 board, and also an Issue 6A …

    ... I can't find 4116 150ns chips anywhere. However, none of ...
    Simon_Carr Simon_Carr June 2013 Hardware
  • Which ULA?Just a quick question, more of interest rather than immediate need... I am thinking ahead about the repair of an Issue 2 board, and also an Issue 6A …

    ... ]I can't find 4116 150ns chips anywhere. However, none of ...
    1024MAK 1024MAK June 2013 Hardware
  • Seen any ebay madness?? post it here !!!What with some high prices fetched on speccy games over the past few days , thought it might be an idea to keep a WOS record of some of the higher fi…

    [QUOTE]KM4164B 150ns 64K Ram chips Quantity 25 - ...
    Macc Macc June 2014 Sinclair Miscellaneous
  • DivMMC Enjoy - I'm not enjoying it!My DivMMC Enjoy arrived today. Excitedly I rushed home to plug it into my +2a. I have quite a few SD card/CF solutions for my computers so I know wha…

    ... of memory chips 100/120/150ns from different brands; next weekend ...
    BCH BCH February 2015 Hardware
  • +2 Gray ProblemI'm trying to repair a +2 gray that behaves differently at every boot up. Some rare times I can get the selection window but pretty soon the characte…

    Thanks a lot :) I'll try IC22 tomorrow.

    My +2 gray has 4164B-15 chips.... I have some 4164C-3 in stock. Will these be OK to use since they are 300ns and the ones already on board are 150ns ?
    gtsamour gtsamour May 2016 Hardware
  • +2 Gray ProblemI'm trying to repair a +2 gray that behaves differently at every boot up. Some rare times I can get the selection window but pretty soon the characte…

    ... some 4164 RAM that's 150ns rated or better to fix ...
    balford balford May 2016 Hardware
<12>

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