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Search Again :: Adv Search 246 results in 0.000s
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  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... without reordering bytes with RCS first:

    RCS+ZX7
    -----------+------+-------+-------
    Cobra ... /> Reordering bytes with RCS first should improve compression ... screen, reordered with RCS before compressing with ZX7 ...
    Einar Saukas Einar Saukas January 2013 Development
  • RCS HelpThis plea for HELP is related to the RCS screen handling routines thread. To further save space in the current crop of routines its looking like the …

    ... HELP is related to the RCS screen handling routines thread. To ... core part that calculates the RCS address needs to be reversed ... in BC and plonks the RCS equivalent in DE, calculating D ...
    jamorski jamorski September 2013 Development
  • Wrong in-game screen for Realm of the Undead ?I've just played completely through [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0004053"]Realm of the Undead[/URL] And I've not bumped int…

    ... ="www.geocities.com/theznorx/RealmOfTheUndead.RCS"]Here[/URL] is a screen ... level. You have to rename .RCS to .SCR
    ZnorXman ZnorXman January 2008 Infoseek database
  • New game: Funky FungusHappy Easter folks! What's better to do during these Spring holidays than playing some new game on our Spectrums? ;-) And lo, here is... [center] [y…

    ... of Einar Saukas's "Smart RCS-ZX7" compression algorithm, in its ...
    Alessandro Grussu Alessandro Grussu March 2013 Brand new software
  • Designing an icon-driven adventure: looking for adviceHi fellas, after the release of Funky Fungus, I am currently contemplating the possibility of designing an icon-driven adventure with location graph…

    ... graphics. I seem to remember RCS/ZX7 has the ability to ...
    Alessandro Grussu Alessandro Grussu April 2013 Development
  • LgK image compressorOk people, i decided to make it proper thread since i've finally got something tested & useful for everyone. Here is my "chunky" ZX image compressor …

    ... borrowed this spreadsheet from the RCS thread to showcase it vs ... />
    [code]screen file| size |RCS+ZX7|LC5.2.1|LK ... decompressor is 110 bytes for RCS and 152 bytes for LC ...
    Lethargeek Lethargeek January 2016 Development
  • ZXSCLZF - Yet another Screen CompressorQuick disclaimer before I continue, this compressor does not shrink screens as small as some of the others posted here, in particular the very good z…

    ... particular the very good zx7/rcs, but was written for a ...
    TomD TomD April 2017 Development
  • Spectrumpedia revised and extended edition. Suggestions about possible new contentFor the 40th anniversary of the first launch of the Spectrum, I am going to revise the Spectrumpedia. Feedback was very positive, although the fact t…

    ... ]
    ZX0/1/2/7, RCS
    aPACK and derivates (Apultra ...
    Alessandro Grussu Alessandro Grussu October 2021 Sinclair Miscellaneous
  • RZX for Sabre WulfI was just about to send an RZX for Sabre Wulf to the RZX Archive when I noticed they don't accept Ultimate's (and other companies' who haven't given…

    ...
    bytes of context (like RCS/CVS do).

    This ...
    J?rg Pleumann J?rg Pleumann October 2004 Games
  • RZX for Sabre WulfI was just about to send an RZX for Sabre Wulf to the RZX Archive when I noticed they don't accept Ultimate's (and other companies' who haven't given…

    ...
    bytes of context (like RCS/CVS do).

    This ...
    Dunny Dunny October 2004 Games
  • RZX for Sabre WulfI was just about to send an RZX for Sabre Wulf to the RZX Archive when I noticed they don't accept Ultimate's (and other companies' who haven't given…

    ...
    bytes of context (like RCS/CVS do).

    This ...
    J?rg Pleumann J?rg Pleumann October 2004 Games
  • Building Spec 128 RGB cable...parts?I just acquired a near-mint Spectrum 128 w/ assorted accessories. I am in the states and am going to connect it to my Amiga 1084S monitor that has b…

    Ah, any electronics suppler / shop. Tandy, RCS etc..............
    dasteph dasteph November 2004 Sinclair Miscellaneous
  • Trying to find the name of an 80's Horror FlickBack when I was at school one of the one of the teachers would sometimes bring in a video and show it to us at lunchtime. I remember watching a bit o…

    ... &g=72&pa=rcs"]http://www.play.com/play247 ... &g=72&pa=rcs[/url]

    all the ...
    mel the bell mel the bell September 2005 Chit chat
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... utility will be called RCS ("Reverse Computer Screen", ... reverse Cobra.scr using RCS, then compress it ... CODE]screen file| size | ZX7 |RCS+ZX7
    -----------+------+------+-------
    scrh- ... statistics show that using RCS will improve compression on ...
    Einar Saukas Einar Saukas January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... line, and so on. In RCS I'm ordering all bytes ... /> According to my numerous tests, RCS was the only ordering that ... appetizer, here's the current RCS reorder algorithm:

    [CODE ...
    Einar Saukas Einar Saukas January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    Cool. :) I just replicated the RCS format and got the Cobra. ... (pixel line) from $c000, to RCS at $8000.
    [code]; Bitmap ... to RCS (37 bytes)
    ld hl ... /> ldir
    ret

    ; RCS to Bitmap (37 bytes)
    FrankT FrankT January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    Einar, has you tried a xored RCS algorithm? I think you can add a simple variation to the ZX7 method for encode zero literal with less bits (for example 1 bit for zero, 10 bits for other literals and N+1 bits for matches).
    antoniovillena antoniovillena January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    [QUOTE=FrankT;674137]Quickly cobbled together this code to convert a screen in bitmap format (pixel line) from $c000, to RCS at $8000.[/QUOTE]

    Thanks, I will check it out!
    Einar Saukas Einar Saukas January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... , has you tried a xored RCS algorithm? I think you can ... matches).[/QUOTE]

    Using RCS+XOR+ZX7 produces larger files ... than RCS+ZX7. Also I suspect this ...
    Einar Saukas Einar Saukas January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... test the compression of the RCS format screen, and I'm ... replaced with code that puts RCS data to the screen?. I ...
    FrankT FrankT January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... | RCS |RCS+XOR|XOR+ZX7| ZX7_0 | RCS |RCS+XOR| XOR |RLE7st | RCS |RCS+XOR| XOR |RLE7dyn| RCS | RCS ...
    Einar Saukas Einar Saukas January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... replaced with code that puts RCS data to the screen?[/QUOTE ...
    Einar Saukas Einar Saukas January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... offset statistics in cobra file: RCS+ZX7. These are the offsets ...
    antoniovillena antoniovillena January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    [QUOTE=antoniovillena;674383]Sorry. My intuition has failed. As you has tested, we add redundancy with the XOR: the bits lost in the matches are more than the bits won in the zeroes.[/QUOTE]

    I realized that my intuition doesn't work so well ...
    Einar Saukas Einar Saukas January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... would like to beat the RCS+ZX7, it's not very ...
    antoniovillena antoniovillena January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    I have found a modification to the RCS filtering that is better than the original. The idea is also permutate the attribute area, source code and executable here:

    [url]http://retrolandia.net/foro/attachment.php?aid=197[/url]
    antoniovillena antoniovillena January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... a modification to the RCS filtering that is better ... I have just improved the RCS format a little (basically the ... a new thread about RCS where I will explain ... ]screen file| size | ZX7 |RCS+ZX7|scr2rcs.exe+ZX7|new ... attributes on the new RCS format would also save ...
    Einar Saukas Einar Saukas January 2013 Brand new software
<123456789>

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  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…
  • RCS HelpThis plea for HELP is related to the RCS screen handling routines thread. To further save space in the current crop of routines its looking like the …

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