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  • Galactic Equator of our Milky Way, is coming.Now this is a weird one, did you know freemasons know all about this one ;) Maya/Aztec Calendar, Astronomers today dont dispute what is about to hap…

    ... who don't understand solar cycles
    guesser guesser August 2007 Chit chat
  • What I hate about computers and/or video gamingYesterday I spent approximately four months (subjecively that is, objectively it was around two to three hours) fixing my mate's PC. I won't bore you…

    ... bloated and requires more cpu cycles you need a faster CPU ...
    Winston Winston August 2007 Chit chat
  • 48K sound effectsAnybody knows where could I find some small M/C routines to play tiny beeper sounds I could use in the 48K version of a game? I don't want the 48K pl…

    ...
    ;de holds number of cycles to play
    ;hl holds ... hl; hold amplitude for hl cycles
    PlaySFXLoop2
    dec hl ... hl; hold amplitude for hl cycles
    PlaySFXLoop3
    dec hl ...
    Digital Prawn Digital Prawn August 2007 Development
  • 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…

    ... must be delayed until 2 cycles before the one you want ...
    csmith csmith September 2007 Emulators
  • Easy Compare On 2 Byte Register?e.g. HL, BC, DE Has anybody got a really easy way of doing this without comparing each byte seperately? Any maths has no effect on the flags as far a…

    ... /> [/code]

    takes 29 cycles. Compare to a comparison done ... ranges from 18 to 36 cycles and assuming equality comes up ... time is close to 18 cycles. For an equality comparison I ...
    Alcoholics Anonymous Alcoholics Anonymous September 2007 Development
  • 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…

    ... cycle, before the last three cycles), which makes kind of sense ...
    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…

    ... (original thread).
    b) The cycles in an IO instruction that ...
    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…

    ... .

    [QUOTE]b) The cycles in an IO instruction that ...
    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…

    ... , this could be even more cycles later. That's the reason ...
    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…

    ... still hold? Which of the cycles are then contended due IO ... and the #7FFF gets all cycles contended due memory contention.
    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…

    ... still hold? Which of the cycles are then contended due IO ...
    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…

    ... contention, but the uncontended cycles are 2 cycles earlier.

    In ...
    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…

    ... range), and by how many cycles. This doesn't tell us ...
    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…

    ... range), and by how many cycles. This doesn't tell us ... ULA period of 6 contended cycles, and then the same instruction ... measure the number of contended cycles.
    If you are unsure ... it across at least 8 cycles. You'll see the pattern ...
    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…

    ... measure the number of contended cycles ...[/QUOTE]

    You still ... talk about by how many cycles is the instruction contended, I ... , then there are two uncontended cycles, then contended one again. Which ...
    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…

    ... of where we're counting cycles from, "late" model Spectrums and ...
    Woody Woody 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…

    Well, if I am about to achieve accurate screen sampling, I really have to ask the questions like at what cycles are the screen data sampled and how comes the FAQ suggests that some of them are not in fact contended, don't I?
    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…

    ... groups of 6 consecutive contended cycles occur.

    The ... performed at those real hardware cycles. So as real hardware and ... first block of 6 contentended cycles would finish with cycle 14340 ... - though where the 6 cycles of contention first occur is ...
    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…

    ... 14336 and continues for 6 cycles[/I]" statement come about ... proved that the byte fetch cycles are correct by watching ... 14336 and continues for 6 cycles, Memory contention starts at 14338 ... attempt to sample the contended cycles via software - because your ...
    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…

    ... 14336 and continues for 6 cycles[/I]" statement come about because ...
    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…

    ... at 14336 and lasts 6 cycles.

    This is the ...
    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…

    ... at 14336 and lasts 6 cycles.

    This is the ... do we have 6 contended cycles when 4 will do??
    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…

    ... an answer to why 6 cycles are contended when, if the ... thought is the extra 2 cycles at the beginning make sure ... fetches begin (we've 2 cycles!), but T1 occurring here will ...
    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…

    ... ]late[/I], wasting all those cycles before it.
    2. Why ...
    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…

    ... thought is the extra 2 cycles at the beginning make ... fetches begin (we've 2 cycles!), but T1 occurring here ... it ends at least 2 cycles before the screen data ... contended unless it ends 3 cycles before that, though, as ... M1, M2 and M3 cycles, but to the other ...
    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…

    ... regular M1, M2 and M3 cycles, but to the other cases ...
    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…

    ... /3 - shows 7 contended memory cycles.

    No crashes - we ... circuit fixes the 7 contented cycles and we just see 6 ...
    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…

    ... alignment (but the cycles are all 2 cycles too far to the ...
    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…

    ... read) and M3 (memory write) cycles is contended, and so is ... outside of these regular M cycles. On +2A/+3, the only ... of M1, M2 and M3 cycles, all other T states are ... case of M2 and M3 cycles. In case of any extra ... case of M2 and M3 cycles, IR pair in case of ...
    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…

    ... do these extra (or lost) cycles go? How is the IRQ ...
    Patrik Rak Patrik Rak September 2007 Emulators
<1…9101112131415…34>

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