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<1234567…34>
  • Using even ports for input?I've been looking for unused ports to use with my clashbasher interface. I understand that the spectrum only considers A0 when decoding its input p…

    ... 've been looking for unused ports to use with my clashbasher ... loading from tape so any even port is considered a read ... loop. It still works fine even with a game tape playing ... any reason not to use even ports in this way? It won ...
    Basher Basher January 2014 Hardware
  • More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.

    ... need to know which ports we're using, and how they' ... know if we're using an even numbered port (which we ... contention. ULA contention on even ports is complex enough already and ... accurate documentation will be vital. Even properly contended, palette changes ...
    Dunny Dunny November 2009 Emulators
  • PC to +3 communicationsHi I'm going to explore the abilities of my +3 to communicate with a PC. The "natural" ways to do that would be via serial or parallel link. I've b…

    ... br />
    By using the printer port this would ... using 4 input bits is not needed (another crazy idea: using joystick ports ... to get even more input bits). ... Also, using spectranet ...
    Zup Zup March 2014 Hardware
  • Super Wonder Boy antimultiface[url="http://bizzley.com/"]Bob Pape's book[/url] mentioned that Rob Hylands put Multiface protection in Super Wonder Boy. The program can detect whe…

    ... and ROM can be paged using specific ports. So you can try ... been altered.
    - You may even try to put a routine ... a snapshot.
    - Note that even transfers that do not corrupt ... the transfer plugged in.
    - Even the most advanced/stealthy transfers ...
    Zup Zup May 2017 Development
  • Making your own tapesTowards the end of last year [url=https://www.worldofspectrum.org/forums/discussion/53607/recommend-modern-1994-2017-games]I dropped in here to ask a…

    ... never remember having any trouble using even reject data tapes my dad ... for recording anything on and even the shell was so badly ... not record over them, so even though four-tracks are designed ...
    The Mighty Dopethrone The Mighty Dopethrone February 2017 Games
  • New WoS and ZXDBIt turns out new WoS is using [url="https://github.com/zxdb/ZXDB"]ZXDB[/url]! More precisely [url="https://github.com/zxdb/ZXDB/blob/c4bd3e40d81a8d47…

    ... The problem is [b][u]using ZXDB while pretending otherwise[/u ...
    Even worse, there was clearly an attempt to disguise using ZXDB ... be that they only started using ZXDB recently but deliberately ... make it look even worse. A new site using even older data, ...
    Einar Saukas Einar Saukas June 2020 Updates
  • tape copier for 48K files on a 128K machineDoes anyone know of a tape copier (that can save out multiple copies of games, like LERM), that will load a whole 48K game into a 128K machine in one…

    ... copy a whole 48k program using even the 48k BSCopy version !
    Tom-Cat Tom-Cat April 2005 Sinclair Miscellaneous
  • After roughly 22 years can you help?Hi, A long one this but here goes. Roughly 22 years ago (i was 14 if i remember right) i got a 48K speccy for christmas of my dad it was awesome an…

    ... nice MINESWEEPER variant in MC, using
    all technics from my ... last entry and better keyboardcontrol (using IN-ports).

    Besides that ...
    Dr BEEP Dr BEEP November 2005 Sinclair Miscellaneous
  • Playing Denied Ultimate GamesHmmm, maybe this belongs in Emulators but it is game specific. Just been leafing through Games(TM) in Smiths and there's an article about a (strong)…

    ... "convince" their customers to continue using even if they wanted to quit ...
    Alcoholics Anonymous Alcoholics Anonymous July 2006 Games
  • Reading the border colorI am building a snap-button to my ZX-PC Interface. Is there a way to read the bordercolor which is set by an OUT-command. (and please don't tell me …

    You should store the last value to ANY even out port.
    because all even ports will set the border.

    I will stick to the value of the systemvariable
    Dr BEEP Dr BEEP April 2007 Hardware
  • Ports AccelerationOn ZX48 or 128/+2(grey) is contended and uncontended ports. For example: if you will read 512 bytes sector from IDE device to ZX ram via INI or INIR,…

    ... velesoft;223781]ULA use for ports same slow-down method as ... (ULA not know difference between ports and memory adress)[/QUOTE]
    even ports are contended, but differently. You ... the IDE port is not even, so what you wrote in ...
    Patrik Rak Patrik Rak October 2007 Hardware
  • Games not working on Timex 2048Timex 2048 is a very good Spectrum 48k clone, over 90% of games work fine. But there are also not working games or working but not properly. Is there…

    ...
    All Timex ports are fully decoded. There is ... it is unknown whether ports are partially decoded ... this is that all even ports do not map to ... being mapped to different ports, the joysticks being ... the TS2068 before Sinclair even considered a 128k machine ...
    Alcoholics Anonymous Alcoholics Anonymous April 2009 Games
  • Mobile Phones.Ok so my old four and a half year old Nokia N70 is looking tired, its battery is giving up the ghost and it looks rustic to say the least from years …

    ... an Excellent little emulator. It even supports all Spectrum models as ... loading games)!

    Their even ports of the emulator for Windows ...
    Hercules Hercules October 2009 Chit chat
  • More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.

    ... whatever is decided - odd or even ports, it's just a bit ...
    jonathan jonathan November 2009 Emulators
  • Audio Output Filtering in EmulatorsI am messing around with various beeper-related code at the moment and have a question related to the audio output from emulators... I've written s…

    ... sample values you're using.

    Even though a typical beep ...
    obo obo March 2010 Emulators
  • Audio Output Filtering in EmulatorsI am messing around with various beeper-related code at the moment and have a question related to the audio output from emulators... I've written s…

    ... sample values you're using.

    Even though a typical beep ... your reply...) for myself by using the "Output to wav file ...
    ccowley ccowley March 2010 Emulators
  • How compatibel is the Sprinter 2000?How compatibel is the Sprinter 2000? I have one but only trd software runs. Joystick did not work and tape in and tape out too. I have schematics bu…

    ... be problem with some demos using uncomplette ports adressation or paging via ...
    velesoft velesoft September 2010 Hardware
  • 128K Contention - How to get it right?With my recent hardware hackery, I've built a 128K (toastrack) clone. I can't quite get the contention right though. What I'm lack is a clear descri…

    ... got it right:

    Even ports (A0 low) between 0x4000 and ... like the 48K
    Odd ports in the same range have ... contended (eg 0x7ffd).

    Ports between 0xc000 and 0xffff are ...
    csmith csmith July 2011 Hardware
  • converting ZX128 software for SAM COUPESAM COUPE is computer compatible with ZX48 model. Use same ports, same keyboard with compatible membrane, 64kB adress space with possibility connect …

    ... ports #xxFD for AY and 128kB memory paging. Software with often using ... this ports can slow-down CPU ... is absolutly unplayable. If MIDI ports is disable/remove, then ... AY must be modified (rewrited ports #xxFD to #xx7D).
    ...
    velesoft velesoft December 2011 Games
  • 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…

    [QUOTE=BYTEMAN;604425]Yes, exactly. We can change port addresses, but it seems that our choice is optimal :)[/QUOTE]

    Not very optimal, all even ports clash with the ULA.
    AndyC AndyC February 2012 Announcements
  • Detecting presence of AY?I'm working on my first little demo for the ZX Spectrum. At the moment I'm aiming to keep the memory requirements low enough that it runs on a standa…

    ... the ula responds to all even ports.

    I would say ... /> Another idea is to use ports with all 1s (eg $ff ...
    Alcoholics Anonymous Alcoholics Anonymous March 2012 Development
  • Divide CF cardsI have recently got a Divide but I'am waiting for my Compact Flash card to come form Amazon. However, the Divide states that the CF card needs to be …

    ... 't clash with other peripherals (using remaining ports like ULA+ and Spectranet ...
    toadstool toadstool May 2012 Hardware
  • Divide CF cardsI have recently got a Divide but I'am waiting for my Compact Flash card to come form Amazon. However, the Divide states that the CF card needs to be …

    ... , there are no free ports on the Spectrum so whichever ... other ports you chose would clash ... byte of the ports).

    [quote]Which ports does the ... t clash with other peripherals (using remaining ports like ULA+ and Spectranet ...
    chev chev May 2012 Hardware
  • SCF/CCF flags - new discoveryI can't believe that no one is interested in discussing the additional, previously undocumented internal state of the Z80 CPU I have discovered recen…

    ... time compared to ZEXALL, while using even more specific tests at the ...
    Patrik Rak Patrik Rak December 2012 Emulators
  • SCF/CCF flags - new discoveryI can't believe that no one is interested in discussing the additional, previously undocumented internal state of the Z80 CPU I have discovered recen…

    ... time compared to ZEXALL, while using even more specific tests at the ...
    Patrik Rak Patrik Rak December 2012 Emulators
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... generate a different data format using settings more adequate for ... new file "data.bin.zx1" using a new (incompatible) ZX1 ... However, for the remaining options (using even and/or interlaced Gamma, limiting ... try to run some tests using real data before deciding ...
    Einar Saukas Einar Saukas January 2013 Brand new software
<1234567…34>

Latest Posts

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