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  • Pixelwise scrolling sideways - how many ways to do it?Not that I need to, but I've been wondering if there's a good way to do this that I haven't considered. Scrolling [B]pixelwise [/B]vertically is "ea…

    ... over the full screen at 50Hz, though that's obviously without ... fair. But the bit of 50Hz is a lovely trick for ...
    joefish joefish January 2012 Development
  • Pixelwise scrolling sideways - how many ways to do it?Not that I need to, but I've been wondering if there's a good way to do this that I haven't considered. Scrolling [B]pixelwise [/B]vertically is "ea…

    ... over the full screen at 50Hz, though that's obviously without ...
    kphair kphair January 2012 Development
  • Cleaning up an old recording?Hi folks! :smile: I recently found a bunch of old Boots C15 tapes in the loft the other day. I know what's on most of them, but there are a couple o…

    ... />
    anything I guess below 50hz ISN'T spectrum.. should run ...
    fog fog January 2012 Sinclair Miscellaneous
  • Double Dragon 128k - The graphicsAs you are all probably aware, I tried gathering a team of people together a few years back to make a totally re-programmed version of Double Dragon …

    ... approach :) all these performance tests, tstates, compressions, buffers, fighting for every ...
    Ralf Ralf February 2012 Development
  • SIDBlaster/ZX - new soundcard for ZX-SpectrumThis soundcard is for ZX-Spectrum compatible computers. It uses in its work MOS Technology SID soundchip, which together with MOS Technology 6510 mic…

    ... all tracks are playing on 50Hz interrupts. Many tracks are for ...
    BYTEMAN BYTEMAN February 2012 Announcements
  • SIDBlaster/ZX - new soundcard for ZX-SpectrumThis soundcard is for ZX-Spectrum compatible computers. It uses in its work MOS Technology SID soundchip, which together with MOS Technology 6510 mic…

    ... all tracks are playing on 50Hz interrupts. Many tracks are for ... coder, not me).
    Those 50Hz songs are mostly sad humming ...
    Yerzmyey Yerzmyey February 2012 Announcements
  • Space Harrier Redux...For me, Space Harrier 1 on the Speccy was nice and quick but difficult to play because it could be difficult to see what was going on (also it was a …

    fog, at 60hz, you have less time for code, than when running at 50hz, as it's that many screen refreshes per second.
    Baggers Baggers February 2012 New game ideas
  • A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…

    ... -looped for the first 16K tstates.

    Though I understand ...
    obo obo March 2012 Brand new software
  • A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…

    ... -looped for the first 16K tstates.[/QUOTE]

    Thanks for ...
    Einar Saukas Einar Saukas March 2012 Brand new software
  • rotating HL left through CarryI've tried this several ways, and it works for a while, then a particular value has a bit set in an inconvenient place and it all goes to pot. Eg: "…

    68 tstates, by using a 256 bytes ... /> I have found a 65 tstates solution based on this one ...
    antoniovillena antoniovillena March 2012 Development
  • rotating HL left through CarryI've tried this several ways, and it works for a while, then a particular value has a bit set in an inconvenient place and it all goes to pot. Eg: "…

    This is a slow 86 tstates based on the last one, ... />
    And finally, the 65 tstates solution, in rot13.
    [CODE ...
    antoniovillena antoniovillena March 2012 Development
  • rotating HL left through CarryI've tried this several ways, and it works for a while, then a particular value has a bit set in an inconvenient place and it all goes to pot. Eg: "…

    ... rotation) you can save 4 tstates more:

    [CODE]
    antoniovillena antoniovillena March 2012 Development
  • Manic Miner ZX81Hi Guys, Can anyone explain why [url=http://www.worldofspectrum.org/infoseekid.cgi?id=0017539]Manic Miner ZX81[/url] is not able to reproduce the ex…

    ... 'm so used to a 50Hz interrupt on the spectrum and ...
    BloodBaz BloodBaz March 2012 Sinclair Miscellaneous
  • SpecEmu 3.0Has anyone else noticed that Woody's released a version 3.0 of SpecEmu? Nope? Just me then... :D

    ... resample filter for conversion from 50Hz display refresh rate, into 60Hz ...
    Pegaz Pegaz March 2012 Emulators
  • BUG in zxspin and SpecEmu - read Loading speed in WAV fileI'm created a new save, but it can run at 44.1 KHz, to test it, i make a new file from WAV 44.1 KHz to 88.2 KHz. Load this file in a emulator zx-spin…

    ... with pulses shorter than 79 tstates in? I really don't ...
    Philip Kendall Philip Kendall March 2012 Emulators
  • BUG in zxspin and SpecEmu - read Loading speed in WAV fileI'm created a new save, but it can run at 44.1 KHz, to test it, i make a new file from WAV 44.1 KHz to 88.2 KHz. Load this file in a emulator zx-spin…

    ... with pulses shorter than 79 tstates in? I really don't ...
    Z80user Z80user March 2012 Emulators
  • 28-character wide multicolour(ish) on 48k SpectrumLong-time lurker here... I've always been interested in rainbow effects on the 48k Spectrum, mainly from a perspective of "Just what [I]would [/I]ha…

    ... , we got about 32 free tstates, almost it's enough for ...
    Arda Arda April 2012 Development
  • 28-character wide multicolour(ish) on 48k SpectrumLong-time lurker here... I've always been interested in rainbow effects on the 48k Spectrum, mainly from a perspective of "Just what [I]would [/I]ha…

    ... . You may short 1-2 tstates. And due to contention, the ...
    Arda Arda April 2012 Development
  • Incorrect Spectrum +3 emulation: different results on Fuse and SpecEmuWhen developing and testing [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0027591"]Rotatrix[/URL], I noticed different results on Fuse and S…

    ... the screen is displayed 14335 tstates after the interrupt; on other ... machines, it is displayed 14336 tstates after the interrupt. The difference ...
    Philip Kendall Philip Kendall April 2012 Emulators
  • [NEW] Speccy for Android ReleasedHello, All! A while ago, I have released the Android version of [i]Speccy[/i], my ZX Spectrum emulator. It emulates Spectrum 16k, 48k, 128k, +2, +2A…

    ... synchronize a spectrum screen with 50hz reresh rate with screens on ...
    Pegaz Pegaz May 2012 Emulators
  • [NEW] Speccy for Android ReleasedHello, All! A while ago, I have released the Android version of [i]Speccy[/i], my ZX Spectrum emulator. It emulates Spectrum 16k, 48k, 128k, +2, +2A…

    ... syncing the whole thing to 50Hz, but it may have somehow ... display, you cannot ask for 50Hz. Sorry. It is either this ... synchronize a spectrum screen with 50hz reresh rate with screens on ...
    fms fms May 2012 Emulators
  • Outrun Europa - In colourAre there any coder's willing to see if we can put the colour into this game as originally intended?

    ... takes the same number of tstates as LD A,7 so ...
    Ralf Ralf May 2012 New game ideas
  • Outrun Europa - In colourAre there any coder's willing to see if we can put the colour into this game as originally intended?

    ... takes the same number of tstates as LD A,7 so ...
    Scottie_uk Scottie_uk May 2012 New game ideas
  • Playing SID music on AY??Hello. Some time ago, with occasion of another thread, I was asking about possibility of making a very certain thing - a SID emulator for Spectrum …

    ... check value ranges to spot 50Hz etc.).

    [quote]However ...
    obo obo May 2012 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... />
    First you need 7 Tstates more, but then you save ...
    Dr BEEP Dr BEEP June 2012 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... in this code and 10 Tstates not setting BC)
    (and ... as index counter saving 8 Tstates from earlier post 2x EXX ...
    Dr BEEP Dr BEEP June 2012 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... code saying the no of Tstates saved.[/I]
    [CODE]org ...
    R-Tape R-Tape June 2012 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... AND 248 saves another 17 Tstates!

    INC E
    Dr BEEP Dr BEEP June 2012 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... test on ZERO saving 10 Tstates per print when you assume ...
    Dr BEEP Dr BEEP June 2012 Development
<1…20212223242526…34>

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