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Search Again :: Adv Search 1000 results in 0.016s
<1234567…34>
  • ZX Evolution -- contended memory and raster emulationFresh bleeding update for [url=http://www.nedopc.com/zxevo/zxevo_eng.php]ZX Evolution[/url] [url=https://code.google.com/p/pentevo/source/list]Baseco…

    ... url] -- raster and ULA contended memory emulation for original 48k and ... rasters.

    2. Contended memory works only if you have ... me with different 48/128 games and demos that ... very valuable insight into contended memory topic and useful discussions.< ...
    lvd lvd January 2015 Hardware
  • Contended Memory woes...Hello All, An iccle problem I have and was hoping one of you fine WoSers could bail me out again... :) I've noticed that my emulator is running sli…

    ... be an issue with the contended memory not working as it should ... [/url]

    I implemented contended memory simplistically but I'm wondering ... check if the access is contended and if so I slap ... an index.

    My contended table is correct.
    My ...
    Korinel Korinel June 2013 Emulators
  • Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…

    ... . I've been investigating contended memory timings on the Timex Sinclair ... Timex SCLD still applies memory contention at these locations ... the CPU is accessing contended video memory or "uncontended" ROM ... might as well call this "contended ROM".

    ...
    rga24 rga24 May 2014 Hardware
  • Contended memory and TritoneQuick question regarding contended memory...<div style="font-style: normal;"><br></div><div style="font-style: normal;">I'm testing ideas with Triton…

    Quick question regarding contended memory...
    I'm testing ideas ... code after 0x7fff memory address and the data in contended memory, and it ... being run from non contented memory, so I think it actually ...
    reidrac reidrac June 2015 Development
  • Quick question regarding contended memoryIf I've read the documentation correctly, the following applies: 128k/+3 "Memory banks 1,3,5 and 7 are contended" +2A/B/+3 "RAM banks 4, 5, 6 and 7…

    ...
    "Memory banks 1,3,5 and 7 are contended"

    contended."

    That means, that ...
    Sdw Sdw May 2012 Development
  • [NEW]: Spectaculator 4.0Hi everyone, Finally managed to finish it... enjoy! --- [NEW]: Spectaculator 4.0 Spectaculator is a Sinclair ZX Spectrum emulator for PCs runnin…

    ... also emulated for the Multiface 128 and
    Multiface 3 ... br />
    o Changed the contended memory model for the 128k/+2 ...

    o Spectrum 128/+2 keyboard emulation now behaves ...

    o Multiface 128 in addition to Multiface 1 ...
    Jon Needle Jon Needle January 2003 Emulators
  • Games that crash because of contended memory.I find these are really annoying. You load up a game like Astro Marine Corps, Fantasy World Dizzy, Dizzy: Prince Of The Yolkfolk and so on (the init…

    ... the +2A/+3 having different contended banks...

    Anyway, I ...
    Jmk Jmk February 2006 Games
  • Memory Map/ContentionHi I'm new to speccy coding (well I did some z80 coding a few years back - like 20yrs ago :) ), and I'd like to get back into writing some scrolling…

    ... this a correct map for memory contention?

    Address Size ... bytes
    5B00-7fff 08k Contended Memory
    8000-FFFF 32k Fast ... Memory (well normal memory really :) )

    Cheers ...
    ZJones ZJones September 2006 Development
  • New interface for ZXThis is my old (2004) unfinished project of internal interface for ZX Spectrum 128+2: ([url]http://velesoft.speccy.cz/hardware_in_development.htm[/u…

    ... br /> 512kB-1MB SRAM + 128-512kB FLASH EPROM
    ... : ZX Profi 1024, Pentagon 128-1024, ZS Scorpion 256-1024 ... /> memory paging compatible with ZX Profi 1024, Pentagon 128-1024, ... /> Speed-up slow ZX memory (contended memory pages)
    Hardware unrainer ...
    velesoft velesoft December 2009 Hardware
  • +2A extended memory map & ULA bug?The [URL="http://www.worldofspectrum.org/faq/reference/128kreference.htm"]128K reference page[/URL] says: [quote]The ULA bug which causes snow when I…

    ... is set to point to contended memory still occurs, and also appears ... is set to point to contended memory.[/quote]

    Will the ... mode, with RAM bank 4 (contended memory) in 0x0000-0x3FFF, and place ...
    ajmoss ajmoss June 2010 Hardware
  • LDIR timings in contended RAM?The 48K Spectrum technical reference page ([URL="http://www.worldofspectrum.org/faq/reference/48kreference.htm"]here[/URL]) describes the detailed ti…

    ... the detailed timings of contended RAM. It gives timings ... residing in, or reading/writing, contended RAM.

    ... LDIR instruction in non-contended memory, and the source (HL ... and destination (DE) addresses in contended memory.

    Machine cycle ...
    ajmoss ajmoss June 2010 Development
  • contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …

    so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct place

    can it be altered on the toastrack and grey +2 to match the the +2a/b and +3?
    BiNMaN BiNMaN January 2011 Hardware
  • ULA TEST 3 results on real hardwareHi guys, I'm writing small spectrum emulator and I wanna implement precise emulation for different spectrum models :-) I found nice test for conten…

    ... /> I found nice test for contended memory - [URL="http://wizard.ae.krakow ... /> - ZX Spectrum+
    - ZX Spectrum 128

    Please post results ...
    ZXMAK ZXMAK May 2012 Emulators
  • No contended memory?Sorry if this is a stupid question. But I'm trying to learn more about the ZX Spectrum. If I had a stock 48k Speccy and I could wave a magic wa…

    ... magic wand to remove the memory contention, what software would break ...
    cbmeeks cbmeeks November 2015 Development
  • Contended Memory, literallyDoes anyone else have the sort of memory where they have trouble just picking out info cold? I know we had a discussion about memory sometime last mo…

    ... else have the sort of memory where they have trouble just ... we had a discussion about memory sometime last month, but...
    memory, but my brain wouldn't ... that's it, my association memory is broken. Its all there ...
    Luny Luny December 2016 Chit chat
  • Contended memory article on WikipediaYeah, apparently there's one. https://en.m.wikipedia.org/wiki/ZX_Spectrum_Contended_Memory [quote] However, the ULA must wait for a Z80 read or wr…

    ... 's clock and access the memory. As the ULA has no ... advance, it relies upon the memory being available to read to ...
    Hikaru Hikaru December 2016 Sinclair Miscellaneous
  • fzx32 on GP32 progressing nicelyJust to let you know that Rlyeh is working hard on his ZX Spectrum emulator fZX32 for the GP32 and should be released in the near future. Its based…

    ... frameskip 0 @ 133 mhz with contended memory and sound emulation,
    - No ... ZX 16, ZX 48, ZX 128, ZX +2, ZX +2A and ... block #10 tapes),
    - Preliminary contended memory emulation (multicolor effects),
    - Preliminary ...
    Antiriad Antiriad December 2004 Emulators
  • Emulating the SamRAM on the ZX Spectrum SEGerton Lunter gave me permission to reuse the code, but so far I have not been able to get the software to work in paged RAM banks.

    ... brew machine, which has no contended memory. The SE is more ... machine than either the Spectrum 128 or the Pentagon. (For ... either the Timex or the 128 addressing.
    [/quote]
    ... clone wishlist:

    - 128/pentagon timings (selected by some ...
    lordcoxis lordcoxis October 2005 Emulators
  • Games that crash because of contended memory.I find these are really annoying. You load up a game like Astro Marine Corps, Fantasy World Dizzy, Dizzy: Prince Of The Yolkfolk and so on (the init…

    ... on +2A/+3 (also 48/128/+2 and probably all Spectrums ... by ROM differences rather than contended memory).

    ---

    I ... knew about the difference in contended memory) but I can't quite ...
    Jmk Jmk February 2006 Games
  • FuseX on the Xbox :releases, testing and feedbackI'm creating a new thread here to continue on from the thread about emulators on the Xbox ([url="http://www.worldofspectrum.org/forums/viewtopic.php…

    ... a Pentagon, a suped up 128 or something ??
    [/quote]
    128 because it has no contended memory. It features a ... Timex 2068 and the Spectrum 128 - although not quite as nifty ...
    loony_jetman loony_jetman March 2006 Emulators
  • RealSpec start upI understand that you can add a start-up line to initiate the version, mode,interface etc; for RealSpectrum but I'm a complete ham with emulators, a…

    ... files] [options]
    -16 -48 -128 -plus2 -plus2a -plus3 -didaktik -pentagon ... Discovery emulation
    -fastmem : disable contended memory emulation
    -nopause : skip startup ...
    icabod icabod March 2006 Emulators
  • DMA interface for ZX Spectrum[url]http://velesoft.speccy.cz/data-gear.htm[/url] This is internal DATA-GEAR interface for any 8-bit computer with Z80CPU. Use Direct Memory Access…

    [QUOTE=piters;175876]Contended memory is not only by 48K ... />
    If DMA access to contended memory, ULA stopped clock for CPU ... , thus DMA wait. On ZX 128+2A/+3
    ula generate ...
    velesoft velesoft March 2007 Hardware
  • DMA interface for ZX Spectrum[url]http://velesoft.speccy.cz/data-gear.htm[/url] This is internal DATA-GEAR interface for any 8-bit computer with Z80CPU. Use Direct Memory Access…

    ... ;175908]If DMA access to contended memory, ULA stopped clock for CPU ... , thus DMA wait. On ZX 128+2A/+3
    ula generate ... example of DMA transfer with contended memory. DMA read and write to ...
    velesoft velesoft March 2007 Hardware
  • Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …

    On a black 128+, loaded in 128 mode via Tape Loader:
    < ... bus... skipped (B=0x01)
    Contended memory... failed (0x01)
    High port ...
    gasman gasman November 2007 Hardware
  • Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …

    ... a grey +2, loaded in 128 mode via Tape Loader from ... bus... skipped (B=0x01)
    Contended memory... failed (0x01)
    High port ... /> Floating bus... failed (0xff)
    Contended memory... failed (0x02)
    High port ...
    Mr. Anonymous Mr. Anonymous November 2007 Hardware
  • Quick test (2)Could I ask any 128 / +2 / +2A / +3 owners to test the new version of [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]fusetest[/url] on thei…

    ... ;226341]Could I ask any 128 / +2 / +2A / +3 owners to ... bus....skipped (b=0x01)
    contended memory...failed (0x01)
    High port ... bus....skipped (b=0x01)
    contended memory...passed
    High port contention1 ...
    Jose_Leandro Jose_Leandro November 2007 Hardware
  • Fuse 0.9.0 releasedVersion 0.9.0 of [url=http://fuse-emulator.sourceforge.net/]Fuse[/url], the Free Unix Spectrum Emulator[/url] has just been released. Highlights of t…

    ... ZXCF support.
    [*]Much improved contended memory and floating bus emulation.
    [*]+D emulation.
    [*]Improved Beta 128 emulation.
    [/LIST]
    [/LIST ...
    zub zub January 2008 Emulators
  • Another fusetest runWould anyone with a real machine be prepared to try the latest version of [url=http://www.shadowmagic.org.uk/spectrum/fusetest.zip]fusetest[/url], my…

    ... grey +2, loaded in 128 mode via Tape Loader from ... /> Floating bus... passed
    Contended memory... passed
    High port contention ... black +2A, loaded in 128 mode via Tape Loader from ... skipped (B=0x01)
    Contended memory... passed
    High port ...
    Mr. Anonymous Mr. Anonymous March 2008 Hardware
<1234567…34>

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128 9.4K 14.8K
contended 1.2K 2K
memory 21.8K 32.5K

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  • 128 Memory PagingI'm having a problem getting my brain around paging. Well, actually the bit I don't understand is how reading I/O ports works! I hope the collective …
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  • contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
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