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Search Again :: Adv Search 1000 results in 0.008s
<1234567…34>
  • Understanding contentionI'm trying to understand contention and its implications when some "weird" bus cycles (such as I/O cycles with I/O addresses in the contended memory …

    ... I/O addresses in the contended memory area) are issued.
    contended in T1?

    Also ... access begins just when the contended period has just begun, but ... /O bus cycle to a contended port (port $00FE for instance, to avoid ...
    mcleod_ideafix mcleod_ideafix May 2015 Hardware
  • 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…

    ... speed emulation, tape sound, and contended mode while the game is ... thing has happened with the contended port emulation, the autoloading and I ...
    Philip Kendall Philip Kendall February 2008 Emulators
  • 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…

    ... thing has happened with the contended port emulation, the autoloading and I ... the cpu code, such as contended port emulation, but I didn't ...
    Metalbrain Metalbrain February 2008 Emulators
  • 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…

    ... thing has happened with the contended port emulation, the autoloading and I ...
    Seleuco Seleuco February 2008 Emulators
  • DivIDEo - streaming video on the DivIDEThis has been a bit of a personal holy grail for years and years, so I'm very pleased to announce the release of DivIDEo, my streaming video system f…

    ... something to do with avoiding contended port reads during INI instructions - I ...
    gasman gasman May 2010 Announcements
  • Double Buffering Artefacts on Real HardwareI have a project that I've played around with for a while and always tested using emulators, either ZX Spin or Spectaculator. It is a 128k game th…

    ... can be avoided by using contended port for Kempston.

    See ...
    qaop qaop May 2017 Development
  • Double Buffering Artefacts on Real HardwareI have a project that I've played around with for a while and always tested using emulators, either ZX Spin or Spectaculator. It is a 128k game th…

    ... can be avoided by using contended port for Kempston.[/quote]

    contended port?

    Also, there's ...
    Hikaru Hikaru May 2017 Development
  • Double Buffering Artefacts on Real HardwareI have a project that I've played around with for a while and always tested using emulators, either ZX Spin or Spectaculator. It is a 128k game th…

    ... can be avoided by using contended port for Kempston.
    [/quote]
    port, the bus (except D2) will ...
    Alcoholics Anonymous Alcoholics Anonymous May 2017 Development
  • Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…

    ... /128K machines, I use a contended port and padding instructions that are ... not dependent on contended memory:

    Port: #40ff
    DEC ... instruction that accesses contended memory works:

    Port: #0ffd
    LD ...
    Ast_A_Moore Ast_A_Moore September 2017 Development
  • Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…

    ... 128K machines, I use a contended port and padding instructions that are ... not dependent on contended memory[/quote]

    ... this case much of initial port reads during the screen ... it initially begins polling the port at.

    Edit: ...
    Hikaru Hikaru September 2017 Development
  • Contended Memory woes...Hello All, An iccle problem I have and was hoping one of you fine WoSers could bail me out again... :) I've noticed that my emulator is running sli…

    ... be an issue with the contended memory not working as it ... url]

    I implemented contended memory simplistically but I'm ... /> Port write

    I check if the access is contended and ... an index.

    My contended table is correct.
    My ...
    Korinel Korinel June 2013 Emulators
  • Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…

    ... . I've been investigating contended memory timings on the Timex ... whether the CPU is accessing contended video memory or "uncontended" ... the cartridge port. So we might as well call this "contended ROM ... fixes this for the cartridge port and the Bus Expansion ...
    rga24 rga24 May 2014 Hardware
  • ZX Evolution -- contended memory and raster emulationFresh bleeding update for [url=http://www.nedopc.com/zxevo/zxevo_eng.php]ZX Evolution[/url] [url=https://code.google.com/p/pentevo/source/list]Baseco…

    ... />
    3. There is no port FF currently. I'm not ... a link.

    4. Port decoding is still 'redundant' (means ... . Yet some hacks added for port #7FFC to work correctly.
    contended memory topic and useful discussions ...
    lvd lvd January 2015 Hardware
  • printer port redirect to (Windows) system printerIs there any emulator (+2A/+3 compatible) that can be configured to output the, say, parallel printer port to the Windows system port ? The default o…

    ... , say, parallel printer port to the Windows system port ?
    The default ...
    secarica secarica November 2002 Emulators
  • Native OS X port of Fuse availableA beta version of Fredrick Meunier's native OS X port of Fuse, the Free errr... Unix Spectrum Emulator is now available from Fuse's homepage: [url="…

    ... Meunier's native OS X port of Fuse, the Free errr ...
    Philip Kendall Philip Kendall December 2002 Emulators
  • Win32 port of Fuse availableAn alpha version of a port of Fuse, the increasingly inaccurately named Free Unix Spectrum Emulator, to Win32 is now available from the [url="http://…

    An alpha version of a port of Fuse, the increasingly inaccurately ...
    Philip Kendall Philip Kendall January 2004 Emulators
  • TC2068 port 0xf5With regard to the TC2068, [url="http://www.worldofspectrum.org/faq/reference/tmxreference.htm"]the FAQ[/url] ("Sound chip" section) says "IN F5h alw…

    ... />
    libspectrum_byte
    tc2068_ay_registerport_read( libspectrum_word port )
    {
    return machine_current-> ... ;ay.current_register != 14
    ? ay_registerport_read( port )
    : 0xff;
    }

    Philip Kendall Philip Kendall March 2004 Emulators
  • 2 questions regarding partial port decoding1) What happens if the Spectrum reads from a port whose number matches the criteria for more than one device ? Does only one of the devices get to r…

    ... the Spectrum reads from a port whose number matches the criteria ... would be IN/OUT from port 0000h, as that triggers any ... "IN 31", corresponds to a port address of "????????00011111", but what ...
    GOC GOC August 2004 Development
  • what extra port for extra memory ? (256K, 512K, 1024K, etc.)I know that Pentagon uses some extra bits from port 7FFD for extra memory pging: - for 512K model, bit 6 & 7 of port 7FFD - for 1024K model, bit 5, 6…

    ... some extra bits from port 7FFD for extra memory ... 6 & 7 of port 7FFD
    - for 1024K ... handle directly the 7FFD port, without taking into account ... using an arbitraty choosen port for this purpose (bits ... is there any established port for extra memory, other ...
    secarica secarica September 2004 Sinclair Miscellaneous
  • Rewiring +2/+3 Joystick portAnyone have a simple guide for the differences between the Amstrad-crippled joystick ports and a standard Atari joystick port? I'd like to be able to…

    Anyone have a simple guide for the differences between the Amstrad-crippled joystick ports and a standard Atari joystick port? I'd like to be able to use the Multiface and a joystick at the same time :)
    b00mzi11a b00mzi11a September 2004 Sinclair Miscellaneous
  • SPIN & port #FFHow to solve a problem with port #FF on SPIN? This prevent me from creating correct RZX-file with Short Circuit, part 1.

    How to solve a problem with port #FF on SPIN? This prevent me from creating correct RZX-file with Short Circuit, part 1.
    Viktor Drozd Viktor Drozd November 2004 Emulators
  • Port 0x7ffd Partial DecodingI'm trying Pitfighter on my emulator and it runs in +2A/+3 mode but crashes in 128k/+2 mode. I traced it down to an OUT instruction which sends 4 to …

    ... instruction which sends 4 to port 1FFD.

    Now after ... /+2 machines respond to any port address from 00FD to 7FFD ... :hardware will respond to any port address with bits 1 and ...
    Unique Unique February 2005 Development
  • Output through the Printer portIs It possible to use the +3 Printer port like the BBC user port, if so how?

    Is It possible to use the +3 Printer port like the BBC user port, if so how?
    guesser guesser September 2005 Sinclair Miscellaneous
  • What is an "Unknown Port"?Port FF is unknown and so can return screen data on a 48k/128k/+2 models. But what if no Kempston mouse is plugged in. Is Port DF classified as unkno…

    Port FF is unknown and so ... is plugged in.
    Is Port DF classified as unknown or ...
    PrinceClumsy PrinceClumsy February 2006 Emulators
  • Games that crash because of contended memory.I find these are really annoying. You load up a game like Astro Marine Corps, Fantasy World Dizzy, Dizzy: Prince Of The Yolkfolk and so on (the init…

    ... the +2A/+3 having different contended banks...

    Anyway, I ...
    Jmk Jmk February 2006 Games
  • Spectum expansion port cable extenderI've got a wobbly +D (oo-er) which keeps causing my rubber friend to reset. I'm sure someone must sell cable extenders for the expansion port to com…

    ... cable extenders for the expansion port to combat this - does anyone ...
    stefrobb stefrobb May 2006 Sinclair Miscellaneous
  • R Register, Contended RAM and ClonesHi. I've had a quick look at the CSS FAQ but didn't spot quite what I'm looking for (also the CSS FAQ doesn't have much detail of the clones - there …

    ... . What is the effect of contended RAM on the R-register ... not run any code in contended RAM, but I do make ... thing, but then without the contended RAM the HALT would take ...
    icabod icabod July 2006 Development
  • ZX Spectrum +3 - incompatible ?Hello :) I'm newbie here. I know WOS site since years, never checked forum before ;) , but this moment came when I have problem. I wanna buy ZX Spe…

    ... a non-existent I/O port no longer returned the last ... the RAM banks were now contended causing high-speed colour-changing ...
    dax dax September 2006 Hardware
  • Regarding the interface with USB port[url]http://www.octocom.es/reuniones/art_madridsx07_11.html[/url] [url]http://velesoft.speccy.cz/kmouse/km-doc/kempston_mouse_turbo_interface/km-t_2…

    ... guys know if this USB port could be used for something ... to USB (maybe using a port of Dom Morris tcp/ip ...
    zxbruno zxbruno March 2007 Hardware
  • Port forwarding helpThe lad in the flat below has been kind enough to let me hijack his wireless as he is never on. All has been well until I realized that I could be g…

    ... UTorrent if I open a port (or something).

    The ... />
    1) How can I port forward if I don't ... UTorrent I pick a random port and test it. Everytime I ... idea how to open a port anyways as I am new ...
    HonoredShadow HonoredShadow July 2007 Chit chat
<1234567…34>

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Related Threads

  • Kempston Interface/Games cartridge portI recently bought an original Kempston joystick interface which features 3 rather nifty joystick ports (1 kemp, 2 sinclair) and a little slot which i…
  • printer port redirect to (Windows) system printerIs there any emulator (+2A/+3 compatible) that can be configured to output the, say, parallel printer port to the Windows system port ?<br /> The def…
  • Native OS X port of Fuse availableA beta version of Fredrick Meunier's native OS X port of Fuse, the Free errr... Unix Spectrum Emulator is now available from Fuse's homepage:<br /> <…
  • OT maybe: Surfing the web with C64 maybe someone can port this to spectrum?Hello!<br /> <br /> I just saw this on the net [url="http://dunkels.com/adam/contiki/"]http://dunkels.com/adam/contiki/[/url]<br /> <br /> 'The Conti…
  • Win32 port of Fuse availableAn alpha version of a port of Fuse, the increasingly inaccurately named Free Unix Spectrum Emulator, to Win32 is now available from the [url="http://…
  • TC2068 port 0xf5With regard to the TC2068, [url="http://www.worldofspectrum.org/faq/reference/tmxreference.htm"]the FAQ[/url] ("Sound chip" section) says "IN F5h alw…
  • 2 questions regarding partial port decoding1) What happens if the Spectrum reads from a port whose number matches the criteria for more than one device ?<br /> <br /> Does only one of the devi…
  • what extra port for extra memory ? (256K, 512K, 1024K, etc.)I know that Pentagon uses some extra bits from port 7FFD for extra memory pging:<br /> - for 512K model, bit 6 &amp; 7 of port 7FFD<br /> - for 1024K…
  • Rewiring +2/+3 Joystick portAnyone have a simple guide for the differences between the Amstrad-crippled joystick ports and a standard Atari joystick port? I'd like to be able to…
  • TAPER USING THE PARALLEL PORTHow can i connect my pc to spectrum +3 for use with taper the read me fill points to <br /> DIAGRAM.Z80 but all i can see with notepad is scrambled t…

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