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<1…11121314151617…34>
  • Coding for 128kHi all, I wonder if anyone can suggest any useful reading/threads/examples on the fundamentals of 128k coding. Chapter 24 of the +2 manual has prov…

    ... /> [/QUOTE]
    Thats truth for +2A/+3 models, 128 and +2 ... /> -contetion on 128K/+2 and +2A/+3 models differs, it can ... routine can be placed in contended page as ay handler most ...
    catmeows catmeows October 2012 Development
  • Coding for 128kHi all, I wonder if anyone can suggest any useful reading/threads/examples on the fundamentals of 128k coding. Chapter 24 of the +2 manual has prov…

    ... point the I register into contended memory when using IM2. But ... screens always uses all the contended RAM banks at once. So ... problem with I pointing to contended memory only happens in the ... +2, the +2A and +3 seems somehow free ...
    na_th_an na_th_an October 2012 Development
  • Coding for 128kHi all, I wonder if anyone can suggest any useful reading/threads/examples on the fundamentals of 128k coding. Chapter 24 of the +2 manual has prov…

    ... point the I register into contended memory when using IM2. But ... screens always uses all the contended RAM banks at once. So ... /> That was fixed in the +2A/+3, precisely because it would ...
    AndyC AndyC October 2012 Development
  • No tea vicar on MB02Hello Folks, I have difficulties in getting "More tea vicar" (the free 128k version) running on the MB02. The game starts and you can choose control…

    ... a +2A/+3?

    There's a problem with contended memory ...
    Jmk Jmk December 2012 Sinclair Miscellaneous
  • No tea vicar on MB02Hello Folks, I have difficulties in getting "More tea vicar" (the free 128k version) running on the MB02. The game starts and you can choose control…

    ... a +2A/+3?

    There's a problem with contended memory ...
    Speccyman Speccyman December 2012 Sinclair Miscellaneous
  • Spectrum +2A/B - CPU affects loading??Hi everybody, Here's something I don't understand. A +2A came in the other day, and it was working fine, but wouldn't load some tapes. OK, thinks I…

    ... at all in a stock +2A computer (it is merely connected ... CPU: Gate Array, ROM, non-contended RAM, and AY.
    mcleod_ideafix mcleod_ideafix January 2013 Hardware
  • Red DwarfA Red Dwarf video game - good or bad idea? (given its recent resurgence in popularity in the UK) My ideas: [b]Plots[/b] - An interquel which bridg…

    ... thought about writing for the +2a/+3?
    There's more ... the bottom of memory is contended. You still only get 16K ...
    joefish joefish February 2013 New game ideas
  • Timing in loading routinesJust for curiosity I have done some experiments with SAVE command in accurate emulators, and then analyzing the generated WAV and I have obtained lit…

    ... that because this memory is contended, it was fairly futile. However ... contention memory. Exactly in a +2A when we have a patched ...
    antoniovillena antoniovillena February 2013 Development
  • Upgrade ZX Spectrum 128,+2,+2a/b,+3[B]1. Debugging RD #7FFD ZX Spectrum 128,+2:[/B] [url]http://zx.clan.su/forum/8-121-1#795[/url]

    ... IM2 table is in slow(contended) ram. GAL chip use one ... on real ZX48/128/+2/+2A/+3 models use TR-DOS ...
    velesoft velesoft March 2013 Hardware
  • Games with Music BugsI know there is already a thread about games with bugs (and indeed its a awesome thread), but I thought maybe it would be nice to open another one ju…

    ... ]Games that crash because of contended memory.[/thread][/QUOTE]

    2A, but I will try again ...
    Ivanzx Ivanzx May 2013 Games
  • Games with Music BugsI know there is already a thread about games with bugs (and indeed its a awesome thread), but I thought maybe it would be nice to open another one ju…

    ... ]Games that crash because of contended memory.[/thread][/QUOTE]

    2A, but I would bet that ...
    Ivanzx Ivanzx June 2013 Games
  • Kiss Kill - a Spectrum music video from Candy Says and GasmanYou may remember [url=http://www.worldofspectrum.org/forums/showthread.php?t=43068]the preview[/url] of this from back in March - here's the final re…

    ... test it in my real +2A... and sadly it goes out ... in video timings in the +2A...[/QUOTE]

    Ack, yes ... over which 128K pages are contended. I filled up the usual ... using ones that are contended on the +2A/+3. I should probably ...
    gasman gasman July 2013 Announcements
  • Kiss Kill - a Spectrum music video from Candy Says and GasmanYou may remember [url=http://www.worldofspectrum.org/forums/showthread.php?t=43068]the preview[/url] of this from back in March - here's the final re…

    ... over which 128K pages are contended. I filled up the usual ... using ones that are contended on the +2A/+3. I should probably ... works with correct timings on +2A / +3. Same links as before ...
    gasman gasman August 2013 Announcements
  • 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 I register points into contended ram. Emulators never bothered to ... and thus subsequently in the +2A/B and is documented in ...
    AndyC AndyC September 2013 Games
  • Copy 4Kb in Assembly?Here's an interesting problem: what's the best way to copy a block of 4Kb in assembly? The most obvious solution is to use [B]LDIR[/B]: [CODE] l…

    ... in contened zone (writing to contended memory from uncontended buffer), ... is only true for Spectrum +2A/+3 models. However, if ... developing code specific for Spectrum +2A/+3 models, you can ... copying blocks of data into contended memory (typically from buffer ...
    Einar Saukas Einar Saukas October 2013 Development
  • Copy 4Kb in Assembly?Here's an interesting problem: what's the best way to copy a block of 4Kb in assembly? The most obvious solution is to use [B]LDIR[/B]: [CODE] l…

    ... copying data to contended memory (except on Spectrum +2A/+3). Moreover, the ... be further optimized for running contended, the [B]LDI[/B] version ...
    Einar Saukas Einar Saukas October 2013 Development
  • Copy 4Kb in Assembly?Here's an interesting problem: what's the best way to copy a block of 4Kb in assembly? The most obvious solution is to use [B]LDIR[/B]: [CODE] l…

    ... copying data to contended memory (except on Spectrum +2A/+3). Moreover, the ... be further optimized for running contended, the [B]LDI[/B] version ... 're talking about writing to contended RAM then hopefully we're ... put a buffer in a contended bank of the 128 if ...
    chev chev October 2013 Development
  • harvard architecture spectrum clone.I got my first +2 before christmas. I'd never given the 128k spectrums much thought, always been a 48k rubber key tradionalist. :smile: I've been me…

    ... />
    ROM is as per +2A/+2b/+3, TWO 32K ROM ... 0 to 7 are not contended.
    RAM banks 8 to ... F are contended.

    Bank Register 0 ...
    1024MAK 1024MAK January 2014 Hardware
  • Fuse 1.1.1 releasedOn behalf of the Fuse team, I am pleased to announce the 1.1.1 release of Fuse. The changes from the recent 1.1.0 are relatively minor, mostly correc…

    ... instead, it would have been contended as well "for free" and ... model and run properly on +2A/+3, too... OTOH, I guess ...
    Patrik Rak Patrik Rak May 2014 Emulators
  • Fuse 1.1.1 releasedOn behalf of the Fuse team, I am pleased to announce the 1.1.1 release of Fuse. The changes from the recent 1.1.0 are relatively minor, mostly correc…

    ... instead, it would have been contended as well "for free" and ... ULA and the ULA is contended.


    [quote]It ... model and run properly on +2A/+3, too... OTOH, I guess ...
    chev chev May 2014 Emulators
  • Fire n' Ice, is it possible to convert it tp tap. or tzx?Wathching a little bit the video from this game in rzxarchive, and it is really outstanding. So I was wondering if its possible to make the trd file …

    ... runs faster. The +3 or +2a is much better suited to ... even though RAM is still contended. I havent even tried it ...
    nuggetreggae nuggetreggae June 2014 Games
  • 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 I register points into contended ram. Emulators never bothered to ... and thus subsequently in the +2A/B and is documented in ...
    zx81 zx81 July 2014 Games
  • Pics of your Speccy set-up?Had a look and can't seem to find a thread on this. - Be interesting to see pic(s) of everyone's "go-to" Speccy, the one that they use regulary. I'…

    ... mutant HAL (unrainer and +2a/b/3 contended memory map) and stereo ...
    BiNMaN BiNMaN October 2014 Sinclair Miscellaneous
  • Pics of your Speccy set-up?Had a look and can't seem to find a thread on this. - Be interesting to see pic(s) of everyone's "go-to" Speccy, the one that they use regulary. I'…

    ... mutant HAL (unrainer and +2a/b/3 contended memory map) and stereo ...
    Glenn Glenn October 2014 Sinclair Miscellaneous
  • Banked memory running slower?I've just compiled a TAP which includes bank6, it loads ok, but the routines that are paged in run slightly slower. The Z80 snapshot has no such pro…

    Is it running on the same model Speccy? The contended pages differ between the 128/+2 and the +2A/+3
    AndyC AndyC October 2014 Development
  • Banked memory running slower?I've just compiled a TAP which includes bank6, it loads ok, but the routines that are paged in run slightly slower. The Z80 snapshot has no such pro…

    [QUOTE=AndyC;799546]Is it running on the same model Speccy? The contended pages differ between the 128/+2 and the +2A/+3[/QUOTE]

    They seem to be both running on a standard 128K
    daveysludge daveysludge October 2014 Development
  • Banked memory running slower?I've just compiled a TAP which includes bank6, it loads ok, but the routines that are paged in run slightly slower. The Z80 snapshot has no such pro…

    ... />
    Bank 6 is not contended in a Spectrum 128k/+2 ... (thus faster), but it's contended in Spectrum +2A/+3 (thus slower).
    Einar Saukas Einar Saukas October 2014 Development
  • Banked memory running slower?I've just compiled a TAP which includes bank6, it loads ok, but the routines that are paged in run slightly slower. The Z80 snapshot has no such pro…

    Yup, it's a contended memory thing. Your snapshot version ... version into a +2A/+3, where Page 6 is contended, the sound ...
    AndyC AndyC October 2014 Development
<1…11121314151617…34>

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