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Search Again :: Adv Search 1000 results in 0.011s
<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…

    ... that it adds a little shadow RAM into betadisk to be paged ...
    Sonic Sonic December 2006 Hardware
  • Currah MicroSource emulationIt appears to be impossible to emualte the MicroSource in software on the ZX Spectrum SE as hardware polling is required. The following patch is not …

    ... /> org $8000 ; run in fast RAM

    di ; disable interrupts ... />
    ; copy BASIC ROM to RAM

    ld hl,$0000 ... /> ldir ; copy

    ; page shadow RAM into ROM area

    chev chev March 2007 Emulators
  • The [You] awardsI'm bored, so I thought I'd do the traditional ewgf Spectrum awards, for the first time ever. Once you've ignored my post, please post your own winne…

    ... so, I think) in the shadow RAM that was unused, so you ... ever Spectrum screensaver, in that RAM!). The Multiface is a very ...
    ewgf ewgf June 2009 Games
  • Converting a 16K speccy in +3??Yes, you heard right. A new interface to convert a 16Kb speccy into a Spectrum+3 have been developed. [IMG]https://lh6.googleusercontent.com/N2eAoz5…

    ... />
    - 128/256/512Kb de RAM upgrade. Selectable by jumpers
    shadow RAM will works fine.

    wilco2009 wilco2009 December 2014 Hardware
  • Was there ever a virus or malware for any 8 bit system?Was there ever a virus or malware for any 8 bit system? You couldn't have one on a cassette only system, unless you were stupid enough to fall for th…

    ... , especially if the system has shadow RAM for the malware to hide ...
    ewgf ewgf August 2016 Chit chat
  • Direct drive LCD screen - looking for information on previous projects people may have attempted.Hi All, My first post, so please forgive and guide if I've posted in the incorrect section. I'm a speccy user from way back in the 80's, but m…

    ... was working on building a shadow RAM ( 16K dual-ported memory ) that ...
    cj7hawk cj7hawk December 2020 Hardware
  • +3 questions, easiest way of playing games?Yes my old 128K spectrum didnt seem to come alive, so I bought a second hand Spectrum +3 on an auction site, it wasnt cheap! but wtf nothing beats th…

    ... 't have the benefit of shadow RAM to do it in. Depends ...
    cyborg cyborg November 2003 Sinclair Miscellaneous
  • +D/Disciple games archive?Hi all, Having finally got my disciple to work, I'm starting to have a look at hacking multiload games. Is there any archive on the web with games t…

    ... code into the jlo's shadow ram -- more on that below. ... next level in the disk RAM. This takes 6 bytes, ... into some spare RAM in the disk RAM area, so that ... return and disabling the disk RAM at the same time ... the +D has a shadow RAM just like the jlo does ...
    Alcoholics Anonymous Alcoholics Anonymous May 2004 Sinclair Miscellaneous
  • Help Does this work on a +3?Hi have tried searching for infor regarding this :- [url="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=11994&item=8201623821&rd=1"]http:…

    It's a Plus D interface. It doesn't use +3DOS - it has its own DOS in shadow ROM. (To be precise, it has a boot loader in shadow ROM which loads the DOS from disk into shadow RAM.)

    It does indeed need a fixer board to work on the +3.
    gasman gasman June 2005 Sinclair Miscellaneous
  • Emulator File types...SNA/TAP/TZX/Z80/ZXS All I knew about the Spectrum was how to play games on it, but since being introduced to pc emulations back in '97 I've always w…

    ... I would page in the shadow RAM into the 0-8K area ... bytes or so. In the shadow RAM would be a previously loaded ... that saves the contents of RAM and most of the z80 ...
    Alcoholics Anonymous Alcoholics Anonymous January 2006 Emulators
  • 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…

    ... the Spectrum SE, even when shadow RAM is paged into the ROM ...
    glancaster glancaster January 2007 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…

    ... ALL of the spectrum ram is free for normal use ... Spectrum SE, even when shadow RAM is paged into the ... or use of main RAM.
    I can ... and I have the Complete Shadow ROM Disassembly book, containing ... on the FATware/ResiDOS RAM usage and hardware support. ...
    Marcelo Marcelo January 2007 Hardware
  • Interface 1 with 3.5" floppyHas this been done or can it be done? Using an interface 1 and a powered 3.5" floppy disk drive (with a modified cable) instead of a microdrive?

    ... Interface One, including rewriting the shadow ROM, I imagine), but I ... />
    - It used no system RAM,
    - Built in snapshot button ... @" is used to alter the shadow RAM), I can't remember the ... you a fair bug of shadow RAM to run (Genie (a dissasembler ...
    ewgf ewgf May 2007 Sinclair Miscellaneous
  • Does anyone remember ftp.ijs.si?This is a blast from the past! I was going through some old files the other day and found this file:- [url]http://reptonix.awardspace.co.uk/sinclair…

    ... in the disk system's shadow RAM and then replace the emulator ... a call into the disk shadow RAM to do the actual loading ...
    Alcoholics Anonymous Alcoholics Anonymous September 2007 Sinclair Miscellaneous
  • Why don't you like homebrew games?Alright folks, I'm sure that there are a lot of people here who like the releases from Bob Smith, Jonathan Cauldwell, CEZ Games Studio and the likes…

    ... in the disk system's shadow ram so that it took up ...
    Alcoholics Anonymous Alcoholics Anonymous March 2008 Games
  • Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.

    ... contention issue by paging in shadow RAM (which is uncontended) over the ... banks. However, AFAIK the screen RAM is always contended (even if ...
    Matt_B Matt_B October 2008 Development
  • Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.

    ... contention issue by paging in shadow RAM (which is uncontended) over the ... banks. However, AFAIK the screen RAM is always contended (even if ...
    BloodBaz BloodBaz October 2008 Development
  • upgrades what you looking for?i start working for upgrades for ZX, but i'm Atari specialist and i don't know exactly what you need for ZX. On the moment i have DIVIDE in stock, an…

    ... data into the RAM, or by having a shadow RAM which can be ...
    joefish joefish April 2009 Hardware
  • Is there any video input on expansion bus?Imagine you want to build a custom display hardware, for instance, to add hardware sprites to display. Is it possible to design such a device so that…

    ... an expansion hw is a shadow RAM that also responded to z80 ... write to its own private RAM. This way the hw always ...
    Alcoholics Anonymous Alcoholics Anonymous March 2010 Hardware
  • Is there any video input on expansion bus?Imagine you want to build a custom display hardware, for instance, to add hardware sprites to display. Is it possible to design such a device so that…

    ... an expansion hw is a shadow RAM that also responded to z80 ...
    mcleod_ideafix mcleod_ideafix March 2010 Hardware
  • Is there any video input on expansion bus?Imagine you want to build a custom display hardware, for instance, to add hardware sprites to display. Is it possible to design such a device so that…

    ... an expansion hw is a shadow RAM that also responded to z80 ... frame buffer write into local RAM instead of converting the analogue ...
    Winston Winston March 2010 Hardware
  • Is there any video input on expansion bus?Imagine you want to build a custom display hardware, for instance, to add hardware sprites to display. Is it possible to design such a device so that…

    ... again: we can have a shadow RAM with updated screen contents, but ...
    mcleod_ideafix mcleod_ideafix March 2010 Hardware
  • BBC microDoes anyone have a bbc micro? Thanks

    ... it?[/QUOTE]

    Yes, shadow ram (so using a high res ...
    spider spider October 2010 Wanted
  • BBC microDoes anyone have a bbc micro? Thanks

    [QUOTE=spider;486064]Yes, shadow ram (so using a high res ... ]

    Is shadow RAM the same as sideways RAM? Some of our ... Bs at school had sideways RAM. There was also a network ...
    Alien 8 Alien 8 October 2010 Wanted
  • BBC microDoes anyone have a bbc micro? Thanks

    ... different word?
    Shadow RAM shadows the screen RAM, allowing the screen not ... map.

    More technically, shadow RAM appears in memory at & ... .

    Even more technically, shadow RAM appears in memory at & ...
    Jonathan Harston Jonathan Harston October 2010 Wanted
  • BBC microDoes anyone have a bbc micro? Thanks

    ... word?
    Shadow RAM shadows the screen RAM, allowing the screen ... memory.
    Sideways RAM is RAM in the sideways ROM ... />
    More technically, shadow RAM appears in memory at & ...
    Even more technically, shadow RAM appears in memory at & ...
    Alien 8 Alien 8 October 2010 Wanted
  • BBC microDoes anyone have a bbc micro? Thanks

    ... fitted)

    Now, sideways ram effectively turns one or more ... these 'sockets' into ram. You plug in a ram chip (there is ... ) a rom image into this ram, and use it :)

    shadow ram, JGH has explained it far ...
    spider spider October 2010 Wanted
  • BBC microDoes anyone have a bbc micro? Thanks

    ...
    Now, sideways ram effectively turns one or more ... sockets' into ram. You plug in a ram chip (there ... a rom image into this ram, and use it :)
    shadow ram, JGH has explained ... organic/biological sideways RAM playing tricks on me! ...
    Alien 8 Alien 8 October 2010 Wanted
  • Fully integrated ZX+Hi, I just want to show some inspiration for integration HW to ZX+ case ;-) - ZX48 issue 3 board, without all parts regarding video generating (pa…

    ... the difference between a lower Ram read by the CPU (Always ... page 5) and a lower ram read by the ULA (Page ... or 7 depending on the shadow ram pin), so i havent been ... able to implement the shadow screen (Everything else works fine ...
    spodula spodula February 2011 Hardware
  • Multiface.Hi, I'm messing with the concept of building a multiface like tool, and was wondering if there are any disassasemblies of the Multiface ROM around t…

    ... need to deal with the Shadow ram and wire in a AY ...
    spodula spodula May 2011 Development
<1234567…34>

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