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<1234567…34>
  • Fully-addressed devices initiative (FADI)I would like to introduce an initiative for those who create new pieces of hardware containing legacy devices with well-known addresses. It says that…

    ... a port for ULAplus (which ironically ends up not doing full decoding :lol:).
    guesser guesser March 2013 Hardware
  • Fully-addressed devices initiative (FADI)I would like to introduce an initiative for those who create new pieces of hardware containing legacy devices with well-known addresses. It says that…

    ... port for ULAplus (which ironically ends up not doing full decoding :lol:).[/QUOTE ... work with and designing the ULAplus, not defining the implicit reaches ... />
    Actually, Mcleod has got full decoding to work, as I never ...
    csmith csmith March 2013 Hardware
  • Fuse 1.1.1 releasedOn behalf of the Fuse team, I am pleased to announce the 1.1.1 release of Fuse. The changes from the recent 1.1.0 are relatively minor, mostly correc…

    ... should be used for port decoding.[/quote]

    The ports ... were chosen to allow partial decoding for Chris's plug-in ... uses full decoding. There's no way to avoid the contention as ULAplus ...
    chev chev May 2014 Emulators
  • Fuse 1.1.1 releasedOn behalf of the Fuse team, I am pleased to announce the 1.1.1 release of Fuse. The changes from the recent 1.1.0 are relatively minor, mostly correc…

    ... were chosen to allow partial decoding for Chris's plug- ... uses full decoding. There's no way to avoid the contention as ULAplus ... contention, regardless of the port decoding chosen or anything else. Even ... Now I wonder what port decoding does Chris use... I should ...
    Patrik Rak Patrik Rak May 2014 Emulators
  • More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.

    ... would be to do a full 16 bit decode of the ... ]

    In the Harlequin full decoding. In the replacement ULA only ...
    chev chev November 2009 Emulators
  • More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.

    ... ;398746]
    In the Harlequin full decoding. In the replacement ULA only ... space is already pretty full, and only decoding A15/A14/A0 means ... almost certain collision with something (decoding A0 = 1 means the LSB ...
    Winston Winston November 2009 Emulators
  • Cant DecideI have had a lot of spectrums in my time from the 16k to the +3 and as we all know they all have flaws. I am thinking about buying another and wanted…

    ... with each issue.
    Partial decoding of Kempton port causes incompatibility ... fix it up to use full decoding. There is no ULA in ...
    chev chev August 2010 Hardware
  • Hacking a Joystick InterfaceI have a DK'Tronics twin-port joystick interface that does Kempston and Sinclair 0-6 keys. I know it has only 14 lines connecting it to the edge con…

    ... /> The diagram says: 'address for full decoding is 31'. That indeed would ... be the address when full decoding were used. In fact the ...
    roko roko April 2011 Hardware
  • Hacking a Joystick InterfaceI have a DK'Tronics twin-port joystick interface that does Kempston and Sinclair 0-6 keys. I know it has only 14 lines connecting it to the edge con…

    ... /> The diagram says: 'address for full decoding is 31'. That indeed would ... be the address when full decoding were used. In fact the ... A6=0,A5=0 or full 8bit adress BIN 00011111 (K ... only modern joystick interfaces with full 8bit adressation and fix joystick ...
    velesoft velesoft April 2011 Hardware
  • Kempston problemsI built a kempston interface a while ago, and it works well, but suddenly, when I load sabre wulf, select kempston interface, the fire button seems t…

    ... 's minimum for kempston port decoding) or better is IORQ=0 ... or absolutly best is use full decoding IORQ=0 + RD=0 + A7 ...
    velesoft velesoft May 2012 Hardware
  • Kempston problemsI built a kempston interface a while ago, and it works well, but suddenly, when I load sabre wulf, select kempston interface, the fire button seems t…

    ... , I am not doing the full decoding as you requested, and I ...
    Johan1973 Johan1973 May 2012 Hardware
  • The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…

    ... no problem here. We use full port decoding (A5=A6=A7=0 ... not full decoding, you use only three adress bits A7-A5. Full decoding is ... />
    OK. If anyone erase full flash eprom chip then will ...
    velesoft velesoft December 2012 Hardware
  • The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…

    ... ]Not true. It's not full decoding, you use only three adress ... bits A7-A5. Full decoding is A7-A0. Czech devices ... ]
    OK. If anyone erase full flash eprom chip then will ...
    antoniovillena antoniovillena December 2012 Hardware
  • The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…

    [QUOTE=velesoft;668202]Not true. It's not full decoding, you use only three adress bits A7-A5. Full decoding is A7-A0. [/QUOTE]

    To be pedantic, full decoding is A15-A0...
    Winston Winston December 2012 Hardware
  • The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…

    ... zx clones use different or full 8 bit adressation of ula ... therefore can be of any decoding. None of the exUSSR clone ... Spectrum does not use a full decoding for port #FE. All modern ...
    Black_Cat Black_Cat December 2012 Hardware
  • The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…

    ... Spectrum does not use a full decoding for port #FE. ... problem here. Then using full decoding is good way (as ... /> [code]
    PORT ADRESS DECODING
    hex/dec A15 ... ... (not confirm that the decoding for a computer #5( ...
    velesoft velesoft December 2012 Hardware
  • Fully-addressed devices initiative (FADI)I would like to introduce an initiative for those who create new pieces of hardware containing legacy devices with well-known addresses. It says that…

    ... any simple device which does full decoding such as a kempston compatible ...
    guesser guesser March 2013 Hardware
  • Fully-addressed devices initiative (FADI)I would like to introduce an initiative for those who create new pieces of hardware containing legacy devices with well-known addresses. It says that…

    ... any simple device which does full decoding such as a kempston compatible ...
    opless opless March 2013 Hardware
  • Fully-addressed devices initiative (FADI)I would like to introduce an initiative for those who create new pieces of hardware containing legacy devices with well-known addresses. It says that…

    ... a subset of the "full address decoding" concept which, by ... port but works with partial decoding).[/QUOTE]
    Well ... -bit ide interface implementing full decoding logic would more or ... re-engineering to do full decoding doesn't actually achieve anything ...
    guesser guesser March 2013 Hardware
  • Fully-addressed devices initiative (FADI)I would like to introduce an initiative for those who create new pieces of hardware containing legacy devices with well-known addresses. It says that…

    ... .[/QUOTE]
    ZXI certification mandates full decoding, and I read the legacy ...
    csmith csmith March 2013 Hardware
  • Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…

    ... Interface 2 doesn't do full decoding for the joystick ports - it ... , so presuming the +D does full decoding then one of those could ...
    joefish joefish April 2013 Hardware
  • Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…

    ... so lazy in not doing full decoding...

    Which makes me ... ), one chip could do the decoding for both, then only two ... that point for slightly improved decoding.

    But anyway, I ...
    joefish joefish January 2014 Hardware
  • Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…

    ... QUOTE]Correct, still only partial decoding, but better than just ... so lazy in not doing full decoding...[/QUOTE] :???: If a buffer ... one chip could do the decoding for both, then only two ... outputs with better (but not full) address decoding :razz:. Then you can ...
    1024MAK 1024MAK January 2014 Hardware
  • Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…

    ... if it's not doing full decoding, or at least even looking ... problem with its design. That decoding wouldn't even read a ... machine uses different and crude decoding to everything else that has ...
    joefish joefish April 2014 Hardware
  • Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…

    ... away with the same reduced decoding behaviour? :D[/QUOTE]
    Well ... address decoder.[/QUOTE]

    Full decoding is trivial really, the main ...
    guesser guesser April 2014 Hardware
  • Bomb Munchies - preview releaseBomb Munchies Preview release Version 12th Jan 2014 [URL=http://s979.photobucket.com/user/MatGubbins/media/bmsix_zpsc33279a2.gif.html][IMG]http://i…

    ... fine if you're doing full decoding, but reading it would clash ...
    joefish joefish August 2014 Brand new software
  • Bomb Munchies - preview releaseBomb Munchies Preview release Version 12th Jan 2014 [URL=http://s979.photobucket.com/user/MatGubbins/media/bmsix_zpsc33279a2.gif.html][IMG]http://i…

    ... fine if you're doing full decoding, but reading it would clash ...
    velesoft velesoft August 2014 Brand new software
  • Features that are still wanted in Spectrum emulation.Features that are still wanted in Spectrum emulation. 4 USB joystick/gamepad input for real multiplayer games - Yes, Bomb Munchies.... - Sinclair 12…

    ... that do 3-bit (low) decoding, 000xxxxx
    Earlier upright ones ... than the 3-bit (low) decoding).

    This is ... both are done through full 8-bit decoding. Anywhere else you'd ... to support anything less than full decoding.

    The only ...
    joefish joefish June 2015 Emulators
  • Features that are still wanted in Spectrum emulation.Features that are still wanted in Spectrum emulation. 4 USB joystick/gamepad input for real multiplayer games - Yes, Bomb Munchies.... - Sinclair 12…

    ... that do 3-bit (low) decoding, 000xxxxx
    Earlier upright ... just use 1-bit (low) decoding, xx0xxxxxOh, so we can hardly ... both are done through full 8-bit decoding. Anywhere else you'd ... to support anything less than full decoding.Well, the SAM approach would ...
    zub zub June 2015 Emulators
<1234567…34>

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