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<1…11121314151617…34>
  • Unconventional way of diagnosing a faultHi everyone Some time ago I got a 48k Spectrum (issue 3B board) in a pretty bad condition. I believe the power supply transistor TR4 failed, causing…

    ... be perfectly in sync for contended memory (since the ULA will ...
    Avian Avian May 2007 Hardware
  • Delay routineAs some people are aware, I have recently starting writing a [url=http://fuse-emulator.svn.sourceforge.net/viewvc/fuse-emulator/trunk/fusetest/]autom…

    ... />
    t26 nop
    t22 nop
    t18 nop
    t14 nop
    ret ...

    t27 nop
    t23 nop
    t19 nop
    t15 ret ...

    t28 nop
    t24 nop
    t20 nop
    t16 inc ...
    Patrik Rak Patrik Rak May 2007 Development
  • Delay routineAs some people are aware, I have recently starting writing a [url=http://fuse-emulator.svn.sourceforge.net/viewvc/fuse-emulator/trunk/fusetest/]autom…

    ... forgetting the RET (10) and NOP (4 Tstates)?
    Dr BEEP Dr BEEP May 2007 Development
  • Delay routineAs some people are aware, I have recently starting writing a [url=http://fuse-emulator.svn.sourceforge.net/viewvc/fuse-emulator/trunk/fusetest/]autom…

    ... -states, with CALL, RET and NOP added it becomes 89 T ...
    Dr BEEP Dr BEEP May 2007 Development
  • Delay routineAs some people are aware, I have recently starting writing a [url=http://fuse-emulator.svn.sourceforge.net/viewvc/fuse-emulator/trunk/fusetest/]autom…

    [QUOTE=Dr BEEP;193427]Aren't you forgetting the RET (10) and NOP (4 Tstates)?[/QUOTE]

    Nope. 15+22+14=51.
    Patrik Rak Patrik Rak May 2007 Development
  • Delay routineAs some people are aware, I have recently starting writing a [url=http://fuse-emulator.svn.sourceforge.net/viewvc/fuse-emulator/trunk/fusetest/]autom…

    ... -states, with CALL, RET and NOP added it becomes 89 T ...
    Patrik Rak Patrik Rak May 2007 Development
  • Delay routineAs some people are aware, I have recently starting writing a [url=http://fuse-emulator.svn.sourceforge.net/viewvc/fuse-emulator/trunk/fusetest/]autom…

    ... 25
    nop ; 4 4
    nop ; 4 4
    nop ; 4 4 ...
    Patrik Rak Patrik Rak June 2007 Development
  • The new GP2Xpectrum releases threadYeah, I know the thread title isn't exactly too original, but I've decided that just one post to hold all updates makes more sense than a lot of smal…

    ... , I'll probably leave precise contended memory emulation as optional for ...
    Metalbrain Metalbrain June 2007 Emulators
  • Delay routineAs some people are aware, I have recently starting writing a [url=http://fuse-emulator.svn.sourceforge.net/viewvc/fuse-emulator/trunk/fusetest/]autom…

    ...
    jr c, b1
    nop

    ; bit0 set : 20 ... , b3
    ret nc
    nop

    ; bit2 set : 20 ...
    Alcoholics Anonymous Alcoholics Anonymous June 2007 Development
  • Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…

    ... .uk/frobush/saucer/Z80/Source/contended.asm[/url]
    [url]http ...
    frobush frobush June 2007 Games
  • "Add Watch" Debug for EmulatorsHi, I am working on completing a JSW-style game that I started in 1991. Although programming using TASM and Spectaculator is far easier than on th…

    ... bothered about the emulation of contended memory. Nice one mate.
    BloodBaz BloodBaz June 2007 Emulators
  • Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…

    ... .uk/frobush/saucer/Z80/Source/contended.asm[/url]
    [url]http ...
    bcass bcass July 2007 Games
  • Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…

    ... .uk/frobush/saucer/Z80/Source/contended.asm[/url]
    [url]http ...
    Fikee Fikee July 2007 Games
  • Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…

    ... .uk/frobush/saucer/Z80/Source/contended.asm[/url]
    [url]http ...
    zxspecticle zxspecticle July 2007 Games
  • New Spectrum HardwareHi all. Well its Friday so it seems as good a time as any (business is a bit slack at the moment) to start up a thread about creating new Spectrum ha…

    ... .e. 3.5hz but no contended memory)
    [/QUOTE]
    Yes ...
    Sonic Sonic July 2007 Hardware
  • Machine CodeHi all, I want to get a machine code/assembler/dissasembler program from the WOS archives. But what in your opinion would be the best to get? I don`t…

    ... .uk/frobush/saucer/Z80/Source/contended.asm[/url]
    [url]http ...
    frobush frobush July 2007 Sinclair Miscellaneous
  • Retro Fighter shoot-em-up development updateHi all, Some of you might recall I was developing a little shoot-em-up with the working title of Retro-Fighter. Well after a long hiatus I managed …

    ... 7 on the 128k is contended ram - making it unsuitable for ...
    dmsmith dmsmith July 2007 Development
  • 68000 programming.Anyone here know anything about this? My question is: how does the programmer know how long hisinstructions are? Do determine the operands to branch …

    ... .
    jmp INTER
    INTER nop deal with interrupts. fill this ...
    wilsonsamm wilsonsamm July 2007 Chit chat
  • AftermathAm I doing something wrong, or is there a problem with both the TAP and TZX of [url=http://www.worldofspectrum.org/infoseekid.cgi?id=0005934]Aftermat…

    ... replaces the push with a nop. As long as de is ...
    Mr. Anonymous Mr. Anonymous July 2007 Games
  • Help hacking Split PersonalitiesI`ve been hacking away at Split Personalities for the purpose of putting new screens and graphics (items). The current screen is at 41187 and is 160…

    ... /> call dec40
    ret
    nop

    org $e004
    FrankT FrankT July 2007 Games
  • sound effect code causing crash[FONT=Courier New]I have just written this piece of code to produce a lazer sound effect but for some reason it is causing a crash and I can't figure…

    ... /> out (254),a
    Beep0: nop
    djnz Beep0
    jr ... /> ld b,e
    Beep2: nop
    djnz Beep2
    jr ...
    frobush frobush July 2007 Development
  • Harlequin ZX Spectrum Clone now 100% compatible!Hi all! The Harlequin ZX Spectrum clone now shows full timing compatibility with the ZX Spectrum! 8-) Both the ULA IO and memory contentions are fa…

    There are some 'harder' tests of timing like Shock Megademo and similar.
    Little simpler is this: [url]http://www.ppest.org/zx/et/BBG.ZIP[/url] - shows TV bar if contended emu. (cloning) is good.
    piters piters July 2007 Hardware
  • Splitting Images tzx maybe not perfectI've been hacking this game and its loader. Also the save routine is intact in this game. It saves a block with a pilot length of 801 pulses. Test…

    ... /> ld d, e
    l_a243: nop
    l_a244: push af
    FrankT FrankT August 2007 MIA/STP/SDP
  • Search for an .mp3 Daren style...[url]http://www.worldofspectrum.org/forums/showthread.php?t=16430&highlight=google[/url] This thread made by Daren has a way of searching for an art…

    ... ]:-( :-) :) :( [/noparse][/QUOTE]

    the nop ARSE tag?? :P
    mel the bell mel the bell August 2007 Chit chat
  • DarkStar.tzx in Spectaculator 6.25Hi all I think I have found a bug in Spectaculator. Darkstar.tzx(OriginalRelease) wiil not not load. DarkStar.tap loads The DarkStar Re-release t…

    ... B,$B0
    FC7F 00 NOP[/code]to avoid messing with ...
    Jon Needle Jon Needle August 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... A total of 6 contended T-states in every 8 ... out of every 8 are contended, but for the IO ... states [I]before[/I] the contended memory T-states. See [ ... fetch when doing a contended IO read of the ... because that T-state is contended by the memory contention!!)
    csmith csmith September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... a delay before a single contended instruction and then measuring the ... 2 T-states before the contended memory T-states.[/QUOTE]
    contended IO read of the floating ... (because that T-state is contended by the memory contention!!)[/QUOTE ...
    Patrik Rak Patrik Rak September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... state and hence will be contended, so clearly the FAQ ... So at least 3 contended T-states must pass before ... states that T2 is contended, and we know that ... byte is being fetched during contended IO.

    ... will have to look at contended IO myself, I was ...
    csmith csmith September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    It's the new contended memory test I wrote this afternoon that I'm interested in here (although the contended IO one may be interesting as well) :-)
    Philip Kendall Philip Kendall September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... Harlequin is not enough. The contended instructions seem to align correctly ...
    Patrik Rak Patrik Rak September 2007 Emulators
<1…11121314151617…34>

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