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Search Again :: Adv Search 1000 results in 0.009s
<1234567…34>
  • Betadisk RAM modificationHello! I've ocassionally found this on the web: [url]http://www.nairam.sk/betadisk.html[/url] [url]http://www.nairam.sk/betadisk_02.gif[/url] Doe…

    ... /> [url]http://www.nairam.sk/betadisk.html[/url]
    [url]http ... it adds a little shadow RAM into betadisk to be paged in ...
    Sonic Sonic December 2006 Hardware
  • spectrum48 with Betadisk and CP/MHi out there, I'm just poking in my old Spectrum hardware again ;) Most of it is homebuilt, in the late 80s in the former GDR(east germany). I made …

    ... ). I made a Betadisk-interface and upgraded some RAM to run CP ... timte to time.
    The Betadisk-Rom is very rare, because ... /> 1. can anyone provide the Betadisk schematics (my desolate copies are ... labeled ("Betadisk 5.03" and have been ...
    PORTHOS PORTHOS December 2003 MIA/STP/SDP
  • WANTED Machinecode Routine for Paging in Betadisk TR-DOS v5 ROMI try to build a small MCode-program which writes the TR-DOS-ROM v4 / v5 to RAM adress 40000 an up. It´s working on TR-DOS v4 / Betadisk 48k: C…

    ... ROM v4 / v5 to RAM adress 40000 an up.
    Betadisk 48k:

    CALL ... working on TR-DOS v5 / Betadisk 128k:

    LD ... br /> and NOT the Betadisk v5 ROM (because it´ ...
    own real hardware Betadisk v4 / Beta 48 and Gamma ...
    Luzie Luzie December 2015 Hardware
  • How do I know the RAM size?Just left my parents after cleaning out my pile of old stuff in their basement. Know what I found? My old ZX Spectrum.... Those were the days! Never …

    ... ZX81, though.
    3K om RAM, my friends!
    My question ... I tell what size of RAM I've got in my ...
    David David February 2001 Sinclair Miscellaneous
  • HELP 4532 or 4864 RAM wanted !Hello My real spectrum fell off yesterday I know that one RAM memory chip is out of order There was 8 X HM4864P-2 but I saw in the Spectrum schemati…

    ...
    I know that one RAM memory chip is out of ... here to set 16K of RAM so 32K are enough to ...
    patrick delvenne patrick delvenne January 2005 Wanted
  • RAM Music MachineBoxed RAM Music Machine Sampler (for 48K, Plus, 128K, Plus two) includes the tape, microphone, manual, even original mic stand! I last got this wor…

    Boxed RAM Music Machine Sampler (for 48K, ...
    racingroom racingroom March 2005 Sales
  • Boxed 32k Ram packPicked one up a few weeks ago at a car boot sale with a boxed 16k Speccy. Is the ram pack worth anything? Not seen any on Ebay. Thanks in advance, G…

    Picked one up a few weeks ago at a car boot sale with a boxed 16k Speccy. Is the ram pack worth anything? Not seen any on Ebay.

    Thanks in advance, Gnorman
    Gnorman Gnorman June 2005 Sales
  • Universal disk drive controller project - information needed! Hello Speccy world! I am a hardware developer from Russia and old Speccy fan. Currently i am starting a project aimed at joining Western and Easter…

    ... /> In addition, russian choice was BetaDisk with TR-DOS system which ... ROM entrypoints) and 16 kb RAM to existing Beta128 controller. After ... it is possible to expand RAM size in order to boot ... with floppy images stored in RAM and requires 1024kb of memory ...
    Sonic Sonic June 2005 Sinclair Miscellaneous
  • Universal disk drive controller project - information needed! Hello Speccy world! I am a hardware developer from Russia and old Speccy fan. Currently i am starting a project aimed at joining Western and Eastern…

    ... /> In addition, russian choice was BetaDisk with TR-DOS system which ... ROM entrypoints) and 16 kb RAM to existing Beta128 controller. After ... it is possible to expand RAM size in order to boot ... with floppy images stored in RAM and requires 1024kb of memory ...
    Sonic Sonic June 2005 Development
  • 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…

    ... which is probably normal since ram
    test takes a ... original
    Sinclair ZX 16k ram pack issue 3 .
    ram pack :

    ... a posibility of faulty RAM somewhere on the lower ... />
    Also when no ram pack is present I can ...
    Tom-Cat Tom-Cat September 2005 Sinclair Miscellaneous
  • R Register, Contended RAM and ClonesHi. I've had a quick look at the CSS FAQ but didn't spot quite what I'm looking for (also the CSS FAQ doesn't have much detail of the clones - there …

    ... is the effect of contended RAM on the R-register? I ... run any code in contended RAM, but I do make several ... , but then without the contended RAM the HALT would take place ...
    icabod icabod July 2006 Development
  • RAM Test ROM?Found a link to this: [url]http://www.retroreview.com/iang/TestSpec4.zip[/url] in another thread, and fired it up in SPIN, but I have no clue how to…

    ... this to determine which physical RAM chip needs replacing, and/or ...
    trellis trellis September 2006 Hardware
  • 256K RAM chips in Spectrum 128KSince I have lot of 256K RAM chips, and my 128K has RAM error, I think about replacing all 16 RAM (64K ones) chips with 256K chips. Then it would be …

    ... have lot of 256K RAM chips, and my 128K ... has RAM error, I think about ... replacing all 16 RAM (64K ones) chips with ... be 'Spectrum 512K' - something like RAM in Pentagon.

    ... bank switching of that extra RAM - we need 2 bits ...
    piters piters October 2006 Hardware
  • Where to get Spectrum RAMSigh. Even obsolete nixie tubes seem to be easier to get hold of than Spectrum RAM. I've tried the usual suspects (eBay and google searches), but not…

    ... get hold of than Spectrum RAM. I've tried the usual ... dead Spectrums with suspected bad RAM. It'd be nice to ...
    Winston Winston November 2006 Hardware
  • Spectrum RAM Paks...This jogged my memory (excuse the pun!!) : [url]http://cgi.ebay.co.uk/CURRAH-32K-RAM-PACK-BOXED-SINCLAIR-ZX-SPECTRUM_W0QQitemZ150057889352QQihZ005QQ…

    ... ebay.co.uk/CURRAH-32K-RAM-PACK-BOXED-SINCLAIR-ZX- ... with one of these 32K RAM paks!
    My poor ... 16K model with this 32K RAM pak.

    It ... them!

    16K RAM paks were very popular for ...
    itsallgood itsallgood November 2006 Sinclair Miscellaneous
  • Black paper, white border. Ram fault?We have a speccy that wont work properly. When we power it up, we get white border around a black screen. We swapped the rom and ula with a working o…

    We have a speccy that wont work properly. When we power it up, we get white border around a black screen. We swapped the rom and ula with a working one, and we got the same result.

    is this a ram fault? How can we check ram chips?
    Arda Arda December 2006 Hardware
  • Any interest in new low-cost mass-storage interface with 512K RAM?I've recently added support to ResiDOS and the +3e ROMs for SD/MMC card interfaces; in particular, ZXMMC (which has no onboard RAM and so is only sup…

    ... (which has no onboard RAM and so is only supported ... of on-board non-volatile RAM (which would allow it ... be the 512K battery-backed RAM and a snapshot button. ... in the built-in RAM and are instantly available ... run from the built-in RAM, including ZX80 and ZX81 ...
    glancaster glancaster January 2007 Hardware
  • 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 …

    Hi
    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 50 from Hong Kong but only need 10.

    Best wishes
    Martin Baugh
    Martin Baugh Martin Baugh March 2007 Wanted
  • Testing RAM Chips After RemovalHi I am going to use Winstons Hot Air Gun method of removing the RAM chips from a 4S circuit board. I wish to check the RAM chips, I have a Logic Pr…

    ... Gun method of removing the RAM chips from a 4S circuit ... . I wish to check the RAM chips, I have a Logic ...
    Martin Baugh Martin Baugh April 2007 Hardware
  • Ram Turbo InterfaceHi all, Can any one tell me if the Ram Turbo Joystick Interface is compatible with Kempston Joysticks? Or are both the Joystick ports Sinclair 1 and…

    Hi all,
    Can any one tell me if the Ram Turbo Joystick Interface is compatible with Kempston Joysticks?

    Or are both the Joystick ports Sinclair 1 and 2

    It is the one with the Rom port on it.
    swift240 swift240 June 2007 Hardware
  • +2B ram chips?Hi all, I have got 2 Plus2B`s and 1 Plus2 gray case. Ok the one Plus2B don`t work, so I tried to see if I could pin down the problem. I changed the …

    ... br />
    There are 4 ram chips on sockets on board ... Plus2B.
    The one ram chip IC6 had a pin ... br /> I then removed 2 ram chips IC6 and IC4 replace ... dwith 2 other ram chips that to be honest ... br />
    If its the ram chips then I shall buy ...
    swift240 swift240 June 2007 Hardware
  • +D and RAM Turbo interfaceJust a quick note to let a few guys in particular know that my RAM Turbo does in fact work with my +D interface. I checked continuity through the RA…

    ... particular know that my RAM Turbo does in fact ... I checked continuity through the RAM Turbo, and found all lines ... used to have a second RAM Turbo, and of course ... is a clone. The other RAM Turbo, which, alas, ... external devices, or som RAM Turbo interfaces don't ...
    DEATH DEATH June 2007 Hardware
  • Early Version Betadisk Manual (ie anybody have one)Folks, after lengthy excavations in my attic I have dug out my old Betadisk interface and 720K drive. However the manual has done missing. It's wa…

    ... have dug out my old Betadisk interface and 720K drive.
    Kilby Kilby July 2007 Hardware
  • Alternative chips for upper RAM blockDoes anybody know of a way to use 4464 chips instead of 4164 for the upper RAM block in a 48K machine? If not 4464 then something a little more avai…

    Does anybody know of a way to use 4464 chips instead of 4164 for the upper RAM block in a 48K machine? If not 4464 then something a little more available than the 4164. Winston? Piters??

    TIA
    DEATH DEATH August 2007 Hardware
  • Wipe Out by KB RamWhilst doing a long-overdue update for Speccy Spoilers, I noticed that one of the latest additions is a game which doesn't appear to be in the archiv…

    ... was written by a KB. Ram in 1987. It's very ...
    Daren Daren September 2007 Games
  • RAM electronics music machineHiya, Just bought a Ram electronics Music Machine from E-bay, and was wondering where I could get some docs for this product, I have managed to find…

    Hiya,
    Just bought a Ram electronics Music Machine from E- ...
    maxhall maxhall October 2007 Sinclair Miscellaneous
  • RAM Upgrade for ZX Spectrum?Check out this [url=http://cgi.ebay.co.uk/ZX-SPECTRUM-ZX-PANDA-16K-EXPANDABLE-RAM-PACK_W0QQitemZ290193305868QQihZ019QQcategoryZ50223QQrdZ1QQssPageNam…

    ... -SPECTRUM-ZX-PANDA-16K-EXPANDABLE-RAM-PACK_W0QQitemZ290193305868QQihZ019QQcategoryZ50223QQrdZ1QQssPageNameZWD3VQQcmdZViewItem?_trksid=p1723.m144]EBay ... 't have had a 16K Ram expansion pack because a) none ...
    BloodBaz BloodBaz January 2008 Sales
  • RAM Joystick Interface on a Spectrum +2Having sold one of my competition pro joysticks to a customer who has a grey Spectrum +2, I provided him with a RAM Turbo joystick interface (Kempsto…

    ... , I provided him with a RAM Turbo joystick interface (Kempston compatible ...
    rwap rwap January 2008 Hardware
  • Source of 4116 ramSomeone on eBay was selling 500 pieces of 4116 ram. The auction ended without bids, but he's willing to sell it in lots of 50 now. Someone in Spain a…

    ... selling 500 pieces of 4116 ram. The auction ended without bids ...
    zxbruno zxbruno March 2008 Hardware
  • Memory paging in 128 KB - 64KB RAM possible?I have found a quote in Spectrum 3 manual (available at WOS) -------------------- In the +3, we have crammed in more than twice the amount of memory…

    ... fact 131072 bytes of
    RAM and 65536 bytes of ROM ... and 48K of RAM ([B]or 64K of RAM with no ROM ...
    Ralf Ralf March 2008 Development
<1234567…34>

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  • Betadisk RAM modificationHello!<br /> I've ocassionally found this on the web:<br /> [url]http://www.nairam.sk/betadisk.html[/url]<br /> [url]http://www.nairam.sk/betadisk…
  • Inefficient code in ROM, from ram-check to RAM-DONEHere is the inefficient code:<br /> <br /> [CODE]<br /> ;; ram-check<br /> L11DA: LD H,D ; Transfer the top value to the HL registe…
  • Emulator suggestion Betadisk 48k TRDOS v4 adress redirection to Betadisk TRDOS v5Hi,<br /> <br /> may I suggest the following: As there are some older programs only running on <br /> Betadisk 48k with TR-DOS v4 and it´s adresse…
  • How do I know the RAM size?Just left my parents after cleaning out my pile of old stuff in their basement.<br /> Know what I found? My old ZX Spectrum.... Those were the days!<…
  • spectrum48 with Betadisk and CP/MHi out there,<br /> <br /> I'm just poking in my old Spectrum hardware again ;)<br /> Most of it is homebuilt, in the late 80s in the former GDR(east…
  • HELP 4532 or 4864 RAM wanted !Hello<br /> <br /> My real spectrum fell off yesterday<br /> I know that one RAM memory chip is out of order<br /> There was 8 X HM4864P-2 but I saw …
  • RAM Music MachineBoxed RAM Music Machine Sampler (for 48K, Plus, 128K, Plus two)<br /> <br /> includes the tape, microphone, manual, even original mic stand!<br /> <b…
  • 'Valkyrie 17' by Ram JamIf you still need this title, please drop me a line at wadsterboy/AT/hotmail.com.
  • a.t.ram (atram)I just picked this up today. Is it on anyones WIP pile?
  • Boxed 32k Ram packPicked one up a few weeks ago at a car boot sale with a boxed 16k Speccy. Is the ram pack worth anything? Not seen any on Ebay.<br /> <br /> Thanks i…

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