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<1…20212223242526…34>
  • How feasible is it to add a second CPU to the ZX Spectrum?Today with IDE, and USB, and TCP/IP and other wonderful technologies arriving on the ZX Spectrum, I'm beginning to wonder if we'll run out of CPU tim…

    ... these do on-the-fly compression/decompression as they read/wrote ...
    wilsonsamm wilsonsamm June 2009 Hardware
  • Back to Skool disassemblyAs mentioned in [url="http://www.worldofspectrum.org/forums/showthread.php?t=22841"]this thread[/url], I've been working on a disassembly of Back to …

    ... of the PC prevailant ZIP compression format (albeit with different techniques ...
    ewgf ewgf July 2009 Development
  • Back to Skool disassemblyAs mentioned in [url="http://www.worldofspectrum.org/forums/showthread.php?t=22841"]this thread[/url], I've been working on a disassembly of Back to …

    ... of the PC prevailant ZIP compression format (albeit with different techniques ...
    John Elliott John Elliott July 2009 Development
  • Back to Skool disassemblyAs mentioned in [url="http://www.worldofspectrum.org/forums/showthread.php?t=22841"]this thread[/url], I've been working on a disassembly of Back to …

    ... /> TAR is not a compression algorithm, it's an archive ... />
    Among the popular compression algorithms, LZMA > BZ2 > ... GZ == ZIP in terms of compression. 7-Zip uses LZMA (Lempel ... know. It uses a proprietary compression algorithm, and therefore should ...
    SkoolKid SkoolKid July 2009 Development
  • Back to Skool disassemblyAs mentioned in [url="http://www.worldofspectrum.org/forums/showthread.php?t=22841"]this thread[/url], I've been working on a disassembly of Back to …

    ... of the PC prevailant ZIP compression format (albeit with different techniques ... .tar.Z files, but the compression format was patent encumbered, so ...
    Winston Winston July 2009 Development
  • z80 format: ED ED xx yyI've just been studying the documentation for the z80 file format: [url]http://www.worldofspectrum.org/faq/reference/z80format.htm[/url] I have a d…

    [QUOTE=Philip Kendall;371432]The Z80 format should be allowed to die a graceful death.[/QUOTE]
    Isn't the SZX format too complex to be implemented in a real Spectrum?

    EDIT: I see it's not, if compression is not included... :)
    mcleod_ideafix mcleod_ideafix July 2009 Development
  • z80 format: ED ED xx yyI've just been studying the documentation for the z80 file format: [url]http://www.worldofspectrum.org/faq/reference/z80format.htm[/url] I have a d…

    ... see it's not, if compression is not included... :)[/QUOTE]
    chev chev July 2009 Development
  • z80 format: ED ED xx yyI've just been studying the documentation for the z80 file format: [url]http://www.worldofspectrum.org/faq/reference/z80format.htm[/url] I have a d…

    ... uses, not to mention the compression routine, which for Zlib, the ...
    mcleod_ideafix mcleod_ideafix July 2009 Development
  • is the country / world really dumbing down this much??[url]http://img.photobucket.com/albums/v708/al323f/fail-owned-wet-rain-common-sense-fa.jpg[/url]

    ... think both are real, but compression as played funny tricks with ...
    Scottie_uk Scottie_uk August 2009 Chit chat
  • is the country / world really dumbing down this much??[url]http://img.photobucket.com/albums/v708/al323f/fail-owned-wet-rain-common-sense-fa.jpg[/url]

    ... think both are real, but compression as played funny tricks with ...
    Hercules Hercules August 2009 Chit chat
  • I want a DivIDE but....I need help, I want to get a DivIDE but I need some advice. Which one do I go for DivIDE or RWAPS DivIDE+ (when they become available). Which firmwa…

    ... than 25fps, right? :-) - and with compression, the variable-length data makes ...
    gasman gasman August 2009 Development
  • I want a DivIDE but....I need help, I want to get a DivIDE but I need some advice. Which one do I go for DivIDE or RWAPS DivIDE+ (when they become available). Which firmwa…

    ... than 25fps, right? :-) - and with compression, the variable-length data makes ...
    Hood Hood August 2009 Development
  • Knot in 3D - how?Dear all, Does anyone know the basic concept behind the programming of Knot in 3D? How much usable ram did the speccy have - was it 32768 bytes? If…

    ... or any other sort of compression at the running game rate ... the direction of linear data compression, and you'd never be ...
    joefish joefish August 2009 Games
  • wanna draw zx graphics :)Is anybody looking for a zx graphics ? I would like to help with graphics if there are projects that need it. Here is an example of a sprite (may be …

    I wouldn't save the gfx as a jpg though. Save it as PNG or GIF then no compression and show the true colours and stuff.
    redballoon redballoon August 2009 Development
  • wanna draw zx graphics :)Is anybody looking for a zx graphics ? I would like to help with graphics if there are projects that need it. Here is an example of a sprite (may be …

    ... .[/QUOTE]

    yes, jpg compression adds some new colors and ...
    beZz beZz August 2009 Development
  • Skool disassemblies updatedThe Skool Daze and Back to Skool disassemblies (previously announced [url="http://www.worldofspectrum.org/forums/showthread.php?t=22841"]here[/url] a…

    ... any questions (again) about the compression abilities of various algorithms, I ...
    SkoolKid SkoolKid August 2009 Development
  • New BUZZSAW+ Demo, No.2OK everybody, here's the latest demo of [I]Buzzsaw[/I]. This includes the title screen I wrote in Corfu with control selection, some new sprites and…

    Are you using compression on any of the data? If not that might free up a few bytes. There's also the old trick of using areas of the ROM as level data.
    chev chev August 2009 Development
  • Arcade Game Designer 2.0 releasedI know dozens of you downloaded the previous version of AGD. Well, you can put it away now because I've made some major improvements to that version…

    ... game. Hopefully the screen data compression in this version will allow ...
    jonathan jonathan August 2009 Development
  • Extended memory and SNApshots in emulatorsExist any snapshot fileformat that support extended memory for ZX (clones) ? I see only Z80 fileformat with 48/128 and 256kB(ZS Scorpion 256) support…

    ... /loading[/QUOTE]

    SZX compression is optional - but the files ...
    Dunny Dunny August 2009 Emulators
  • Extended memory and SNApshots in emulatorsExist any snapshot fileformat that support extended memory for ZX (clones) ? I see only Z80 fileformat with 48/128 and 256kB(ZS Scorpion 256) support…

    ... , he is talking about Zlib compression/decompression on a real zx ... suggesting they implement ZLib de/compression on the Z80 in just ... code space let alone de/compression of the blocks with complex ...
    Tom-Cat Tom-Cat August 2009 Emulators
  • Extended memory and SNApshots in emulatorsExist any snapshot fileformat that support extended memory for ZX (clones) ? I see only Z80 fileformat with 48/128 and 256kB(ZS Scorpion 256) support…

    ... , he is talking about Zlib compression/decompression on a real zx ... suggesting they implement ZLib de/compression on the Z80 in just ... code space let alone de/compression of the blocks with complex ...
    chev chev August 2009 Emulators
  • Extended memory and SNApshots in emulatorsExist any snapshot fileformat that support extended memory for ZX (clones) ? I see only Z80 fileformat with 48/128 and 256kB(ZS Scorpion 256) support…

    ... to write the zlib de/compression routines that would fit into ... the snapshots and the de/compression. Yep, you go ahead... do ...
    Tom-Cat Tom-Cat August 2009 Emulators
  • Extended memory and SNApshots in emulatorsExist any snapshot fileformat that support extended memory for ZX (clones) ? I see only Z80 fileformat with 48/128 and 256kB(ZS Scorpion 256) support…

    ... /> Swap is possible, but (de)compression is slow. I add new ... 1024, etc...). Is possible disable compression for SAVE *.SZX snapshot in ...
    velesoft velesoft August 2009 Emulators
  • Extended memory and SNApshots in emulatorsExist any snapshot fileformat that support extended memory for ZX (clones) ? I see only Z80 fileformat with 48/128 and 256kB(ZS Scorpion 256) support…

    [QUOTE=velesoft;380133]Is possible disable compression for SAVE *.SZX snapshot in any ZX emulator ?[/QUOTE]

    fuse-utils's snapconv can write out uncompressed SZXs. It even seems to work.
    Philip Kendall Philip Kendall August 2009 Emulators
  • Tape loadersi understand how ROM tape loader works but i dont understand why it so 'complicated'. it measure time until two edges in signal appears. why it does…

    ... /> Anything using a reasonably efficient compression algorithm on the data itself ... definition of a "reasonably efficient" compression algorithm). At that point, you ...
    Philip Kendall Philip Kendall September 2009 Development
  • 128K dev / PASMO (or alternative) question...When I assembly my code, I have it set up so that PASMO automatically creates a TAP file complete with loader, and this works great for 16/48k Do y…

    ... steps (assembling, creating Basic stubs, compression, final packaging...) in a single ...
    gasman gasman September 2009 Development
  • Arcade Game Designer 2.0 releasedI know dozens of you downloaded the previous version of AGD. Well, you can put it away now because I've made some major improvements to that version…

    ... bytes against the lack of compression on previous it's nothing ...
    BiNMaN BiNMaN September 2009 Development
  • Arcade Game Designer 2.0 releasedI know dozens of you downloaded the previous version of AGD. Well, you can put it away now because I've made some major improvements to that version…

    ... be compensated by the screen compression now.
    BiNMaN BiNMaN September 2009 Development
  • Ahh.. the tape loading era! by ate bit[url]http://www.pouet.net/prod.php?which=53846[/url] It is UNBELIEVABLE!!! Effects while loading, MUSIC while loading (and loading normal speed !!!…

    ... a *little* bit with some compression but, again, the timing (and ...
    evilpaul evilpaul September 2009 Sinclair Miscellaneous
  • Ahh.. the tape loading era! by ate bit[url]http://www.pouet.net/prod.php?which=53846[/url] It is UNBELIEVABLE!!! Effects while loading, MUSIC while loading (and loading normal speed !!!…

    ... /> It's due to the compression used to get it into ... same demo but without the compression
    evilpaul evilpaul September 2009 Sinclair Miscellaneous
<1…20212223242526…34>

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