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  • Draft specs for TZX v1.20Hi all! In the attempt to restart the development of the TZX format, I've put online the first version of the draft document [1]. At the moment ther…

    ... ultracargas on the 128K, where timings are so strict that the ...
    Luca Luca November 2005 Emulators
  • Z80 cycle contentionHi, Does anybody knows exactly when the ula halts the Z80 clock during a memory r/w cycle? I mean which Z80 clock cycle, T1 or T2? Thanks..

    ... have another question about Ula timings..
    after 14336 T-states ...
    Mp Mp November 2005 Hardware
  • 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…

    ... custom loader uses any wierd timings, short pilot etc. ID.10 ...
    Andrew Barker Andrew Barker November 2005 Emulators
  • Z80 cycle contentionHi, Does anybody knows exactly when the ula halts the Z80 clock during a memory r/w cycle? I mean which Z80 clock cycle, T1 or T2? Thanks..

    ... have another question about Ula timings..
    after 14336 T-states ... -states?).

    Regarding the timings of the contention, check out ...
    icabod icabod November 2005 Hardware
  • Spectrum Emulator for Windows XPHi all. I'm struggling to get any emulators to work with Windows XP. I'm just after an emulator with Joystick support. Any suggestions? Thanks

    ... the undocumented flags, R register, timings, and even had hints towards ...
    Philip Kendall Philip Kendall November 2005 Emulators
  • Spectrum Emulator for Windows XPHi all. I'm struggling to get any emulators to work with Windows XP. I'm just after an emulator with Joystick support. Any suggestions? Thanks

    ... the undocumented flags, R register, timings, and even had hints towards ...
    rich_chandler rich_chandler November 2005 Emulators
  • Help, my Sprite Code wont workI have zipped it all up here: [url="http://www.peargames.co.uk/downloads/galagorf.zip"]http://www.peargames.co.uk/downloads/galagorf.zip[/url] If y…

    ... routine finishes. Check also the timings of copying the buffer to ...
    icabod icabod December 2005 Development
  • Beyond the Ice Palace by EliteHi Beyond the Ice palace by Elite (Tape) Is this required for STP ? Side 1 - 48k Side 2 - 128k

    ... re-release is faulty. The timings are very irregular and I ...
    Andrew Barker Andrew Barker January 2006 MIA/STP/SDP
  • Raf Cecco - misguided genius?Probably one of the greatest Speccy programmers, but were his games any good? From my experience: Exolon - Great game, well designed, good controls,…

    ... entrances, so the pixel-perfect timings were more annoying.

    Dunny Dunny January 2006 Games
  • Running Man TZX incompleteThe Running Man TZX does not contain level data (side 2). This data is available on the Heroes compilation if it helps.

    ... block and shows identical blocks, timings, errors etc.
    From there ...
    PrinceClumsy PrinceClumsy February 2006 MIA/STP/SDP
  • 128k Screen Flipping - Sample Code PleaseI know this has been covered before, but I cannot find out code to do the following: On a 128k Spectrum tell the speccy to display from address 4915…

    ... is still contended, and port #7FFD also causes contention, although the ...
    Fikee Fikee February 2006 Development
  • 128k Screen Flipping - Sample Code PleaseI know this has been covered before, but I cannot find out code to do the following: On a 128k Spectrum tell the speccy to display from address 4915…

    ... ,a
    ld bc,&7ffd
    ld a,(rampage)
    robpearmain robpearmain February 2006 Development
  • Assistance with IM2 routineI subsequently got a working IM2 routine.

    ... have to recalculate all the timings?
    [/quote]
    Anywhere, really ...
    icabod icabod March 2006 Development
  • Determining 50hz/60hz in softwareHow can you determine in software if you are running at 50hz or 60hz?

    ... give correct value. May calculate timings by exact T-states, or ...
    piters piters March 2006 Development
  • MEMPTR finally crackedThis post is mainly for emulator developers. As you may be well know there is a misterious internal register in Z80 CPU (MEMPTR) which value is set …

    ... the 1T difference in multicolor timings that we discovered some time ...
    Luca Luca April 2006 Emulators
  • ZXCF InterfaceI'm just trying to get an idea for the ZXCF interface, and to me, it looks a much cleaner design compared to divIDE (Of course, that's just my opinio…

    ... reasons, a write to port #7ffd will copy bits 0-3 ...
    MikeW MikeW April 2006 Hardware
  • ZXCF InterfaceI'm just trying to get an idea for the ZXCF interface, and to me, it looks a much cleaner design compared to divIDE (Of course, that's just my opinio…

    ... noted above, writing to port 7ffd only affects certain bits in ...
    MikeW MikeW April 2006 Hardware
  • ZXCF InterfaceI'm just trying to get an idea for the ZXCF interface, and to me, it looks a much cleaner design compared to divIDE (Of course, that's just my opinio…

    ... , toggling bit 3 of port 7FFD toggles the relevant bit in ...
    MikeW MikeW April 2006 Hardware
  • ZXCF InterfaceI'm just trying to get an idea for the ZXCF interface, and to me, it looks a much cleaner design compared to divIDE (Of course, that's just my opinio…

    ... reasons, a write to port #7ffd will copy bits 0-3 ...
    Alcoholics Anonymous Alcoholics Anonymous April 2006 Hardware
  • Spectrum Game CompatibilityHi, At the moment I have a spectrum 48k. I am planning to get a 128k +2, but I have a problem. Will my 48k games work on 128k +2? Because some of the…

    ... to differences in the frame timings. Both Cobra and Arkanoid run ...
    Philip Kendall Philip Kendall April 2006 Hardware
  • How to speed up TZX loading (emu development)With many newer emulators there are options to do faster loading schemes, even for turbo-loader or protected loader blocks in TZX files. For example,…

    ... elapsed, to ensure adequate frame timings, you're going to slow ...
    Dunny Dunny May 2006 Emulators
  • How to speed up TZX loading (emu development)With many newer emulators there are options to do faster loading schemes, even for turbo-loader or protected loader blocks in TZX files. For example,…

    ... elapsed, to ensure adequate frame timings, you're going to slow ...
    Laser Laser May 2006 Emulators
  • Create own DVD'sSorry if something similar has been mentioned before, still having major problems. I download some US shows and i want to put them onto dvd to watch…

    Are there any Linux DVD creators and menu editors out there yet? I don't want anything that forces you to use templates, I want full control of positioning and timings of *everything*.
    NickH NickH May 2006 Chit chat
  • Speccy and LinuxI try to run Spectrum emulators under Linux (PCLinOS Mandriva based distribution, kernel 2.6.12), with Wine 0.9, but without much succes. Spectacula…

    ... -g -O2 -Wall -c timings.c
    gcc -DHAVE_CONFIG_H ... O2 -Wall -c timings.c -o timings.o >/dev/null ... tape_block.lo tape_set.lo timings.lo tzx_read.lo tzx_write ... .libs/tape_set.o .libs/timings.o .libs/tzx_read.o ... tape_block.o tape_set.o timings.o tzx_read.o ...
    Pegaz Pegaz May 2006 Emulators
  • Loading schemes18 years ago I hated loading schemes like Alcatraz and Speedlock because they were a b*tch to copy and became unreliable when the tape got older. Now…

    ... Taper, but I guess better timings wouldn't go amis ;-)
    Andrew Barker Andrew Barker June 2006 Games
  • The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…

    ... been emulating the pentagon contention timings for demos for a while ... summer, hopefully.

    The timings were found to be faulty ...
    Dunny Dunny June 2006 Emulators
  • How to put up a SCREEN$ - VB6 only.I'm making a little [B]Opus Discovery[/B] floppy image creator/viewer (thanks, [B]Obo[/B]!). It is made in... VB6 (sorry, don't know any "real" langu…

    ... it knows nothing of Speccy timings at all.

    Hope ...
    Marcelo Marcelo June 2006 Development
  • ZXLFN - storing tape header in a long file nameHi lads ;) Couple of months ago, the group of guys interested in divIDE software development has came up with an interesting idea - store tape heade…

    ... undocumented ULA features, testing opcode timings, cycle order... Your small hardware ...
    Dunny Dunny July 2006 Emulators
  • RealXThis may be a dumb question but will RealX ever get released?

    ... who is testing the 48K timings with a logic states analyser ...
    Luca Luca July 2006 Emulators
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