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Search Again :: Adv Search 1000 results in 0.039s
<1234567…34>
  • New multi-interface for ZXI have in development new interface for ZX Spectrum. PCB size is similar as K-MOUSE interface and on board is CPLD (programmable logic), up to 1MB st…

    ... ), to just set A5 low, then most cheap Kempston joysticks would still ... them would be with 8-bit address decoding.[/quote]

    port 95 and kempston port 31, both use A5=0 ...
    velesoft velesoft October 2013 Hardware
  • SEGA GENESIS joypad from Ebay[IMG]http://velesoft.speccy.cz/zx/joypad/IMGP9641.JPG[/IMG] On Ebay is possible buy very cheap chinesse joypad compatible with Sega Genesis / Sega M…

    ... /> DIVMMC interface and KEMPSTON JOYSTICK interface by Ben ... /> Joypad is visible as kempston joystick with two fire buttons ... br /> After read port #1F return kempston joystick interface this data ...
    Each reading from port 31 set signal SELECT for joypad to ...
    velesoft velesoft June 2014 Hardware
  • NEW KEMPSTON interface for ZXHi. Lotharek has released a new KEMPSTON interface for people who doesn't need AY on-board and want to have some really small device. [url]http:/…

    ... level HW info about S-KEMPSTON INTERFACE:


    - kempston port 31 decoder use uncomplette adressation (IORQ ... /> - S-KEMPSTON port collide with other KEMPSTON devices with A5=0 ... (impossible use with all kempston mouse interfaces)

    velesoft velesoft August 2011 Hardware
  • 2013 projects: new PlusD, DivIDE and MultifaceI have written about this before, but as I want to let these project be influenced by your opinions, I thought to create a separate topic about it. …

    ... , but simply adding a Kempston port seems a bit redundant to me if ... games which support both Kempston AND IF2, another Kempston port adds nothing to ... divIDE with a built-in Kempston sure saves space, but doesn ... it's got a single Kempston port doesn't look like a ...
    pkersey pkersey April 2013 Hardware
  • 2013 projects: new PlusD, DivIDE and MultifaceI have written about this before, but as I want to let these project be influenced by your opinions, I thought to create a separate topic about it. …

    ... but simply adding a Kempston port seems a bit redundant to me if ... games which support both Kempston AND IF2, another Kempston port adds nothing to ... joystick port.
    But adding a second one seems a bit ... it's got a single Kempston port doesn't look like a ...
    bverstee bverstee April 2013 Hardware
  • How do I detect if key 'H' is pressed in machine code?How do I detect that the key has been pressed? I have been using the IN 239 command for keys 6-0, but dont know how to detech 'H'...

    ... preload of A defines the port you read. So the preloaded ... ) the 254 makes your final port.

    This

    port as well, ie KEMPSTON port 31 (#1F)
    LD ...
    Dr BEEP Dr BEEP April 2013 Development
  • 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…

    ... switch joystick mode between KEMPSTON (port 31) or FULLER (port 127) mode.

    velesoft velesoft 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…

    ... switch joystick mode between KEMPSTON (port 31) or FULLER (port 127) mode.

    Jiiira Jiiira August 2014 Brand new software
  • Kempston joystick detectionIn both [url="http://skoolkit.ca/disassemblies/manic_miner/asm/34252.html#34332"]Manic Miner[/url] and [url="http://skoolkit.ca/disassemblies/jet_set…

    ... probability that every reading of port 31 has bit 5 reset when there ...
    SkoolKid SkoolKid October 2014 Hardware
  • Kempston joystick detectionIn both [url="http://skoolkit.ca/disassemblies/manic_miner/asm/34252.html#34332"]Manic Miner[/url] and [url="http://skoolkit.ca/disassemblies/jet_set…

    ... probability that every reading of port 31 has bit 5 reset when there ...
    spodula spodula October 2014 Hardware
  • Kempston joystick detectionIn both [url="http://skoolkit.ca/disassemblies/manic_miner/asm/34252.html#34332"]Manic Miner[/url] and [url="http://skoolkit.ca/disassemblies/jet_set…

    ... probability that every reading of port 31 has bit 5 reset when there ... games ask because its a bit of a hack / programmers were ...
    spodula spodula October 2014 Hardware
  • Microdigital TK95 / TK90X - my experiencesAs asked for by Renegade [url="https://worldofspectrum.org/forums/discussion/58189"]here[/url] I'll do a short writeup of my experiences with my TK90…

    ... the address with Tape-In ... Kempston port 31 seems to be floating (which ... ), external kempston interfaces work fine and remove the jitter.
    Port #FF ...
    Shockwav3 Shockwav3 February 2021 Hardware
  • Kempston detectionI could use some help. This Kempston joystick behaviour drives me mad. I've written a game called Necrospermia recently ([url]http://www.worldofspec…

    ... - if you scan Kempston port but there isn't Kempston attached, some weird ... BC,31 ;kempston joystick fire?
    IN A,(C)
    BIT 4,A ... ,1
    LD (KeysOrJoystick),A ;set kempston
    RET

    StartAnim4 ...
    Ralf Ralf October 2012 Development
  • Kempston joystick detectionIn both [url="http://skoolkit.ca/disassemblies/manic_miner/asm/34252.html#34332"]Manic Miner[/url] and [url="http://skoolkit.ca/disassemblies/jet_set…

    ... 34762.html#34965"]Jet Set Willy[/url] there is ... /> LD BC,31 ; B=0, C=31 (joystick port)
    DI ... readings of the joystick port in A
    ... Is a joystick connected (bit 5 reset)?
    JR ... bit 5 of a reading from port 31 is reset if a Kempston ...
    SkoolKid SkoolKid October 2014 Hardware
  • New Compo IdeaI've had this idea and would like to know what do you think about it. I think that most of us here know how to code in BASIC. The problem with Specc…

    ... respectively).
    * Kempston Joystick can be read in port 31: IN 31 which give ... in the message having bit 7 set to a one. After ... next keyword.
    Bit 1: This bit being set to a one indicates ... variable) and bit 5 of 23611 (FLAGS) is set to indicate ...
    na_th_an na_th_an April 2005 Development
  • Detecting a Kempton joystick...I've been playing with the idea in the games I'm currently developing so that once the Kempston joystick has been selected you can hold FIRE down to …

    ... +2 without a Kempston attached and IN 31 constantly returns values of ... read port 31. If bits 5, 6 or 7 are ever set during ... this loop you should disable your Kempston check ... chance the Kempston is connected and you can test bit 4 to ...
    Code Monkey Code Monkey January 2008 Development
  • Hidden Spectrum emulator discovered in Goldeneye (N64)Commence ewgf's mind being blown in 3...2...1... [url]http://news.ycombinator.com/item?id=3770288[/url] [url]http://www.therwp.com/forums/showthread…

    I'll quote a bit from what the guys @ [url= ... is mapped as a Kempston joystick on port 31. Necessary buttons to start ... to the keyboard port 254 halfwords. These are set on a per ...
    Asure Asure March 2012 Sinclair Miscellaneous
  • 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…

    ... "extended" kempston interface that fully decodes the port instead of ... be to use each bit of the high byte ... Or, presumably, nobble a Kempston joystick interface and change one ... if IN 31 is A7,A6,A5 set low then ... high bits on a Kempston port read to pick 1 ...
    joefish joefish April 2013 Hardware
  • 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…

    ... the built in joystick port set to Kempston. However I am ... from joyresult).
    [code]kempston EQU 31

    joyresult ... /> getinput
    in a,(kempston)
    ld (joyresult),a
    bit 4,a ;test fire
    dave18 dave18 May 2017 Development
  • Kempston on real machines and on emulatorsRecently I've tested several 48K games on my Spectrum +2A with Kempston interface. The computer resets when I start the game. I've tried with two dif…

    ... on my Spectrum +2A with Kempston interface. The computer resets ... ve tried with two different kempston interfaces, with the same ... due to the way the port 31 is checked in 128K and ... this one works flawlessly with Kempston. Perhaps programmers changed the way ...
    zyloj zyloj September 2007 Emulators
  • Proper mapping for joysticks in an existing emulatorThis may seem like a strange question, so I'll try to explain it as well as possible. In one of Rare's (Ultimate Play the Games) later games there…

    ... input as a kempston joystick (or whatever is at port 31) but had ... no actual keyboard support. Obviously, that creates a bit ... here:[list=1][*]Can a Kempston joystick be used without a ... the joystick to the keyboard port, and what masks would be ...
    Zoinkity Zoinkity March 2012 Emulators
  • Data separation on Kempston joystick interfaceIn my last two Kempston Joystick interface batches I included data separation resistors (100 ohm). I was thinking that they were needed so another de…

    In my last two Kempston Joystick interface batches I included ... device that uses port 31 can always overrule this Kempston Joystick interface.
    port 31, my Kempston Joystick interface should not be ...
    bverstee bverstee April 2013 Hardware
  • Writing to MIC portSo I had a new crazy idea: How about a stereo beeper engine? Since we can set bit 3 on port $fe to output to MIC, writing such an engine should be ra…

    ... engine? Since we can set bit 3 on port $fe to output to ...
    utz utz August 2013 Development
  • Hardware description - BETA DISK interfaceExist more versions and clones of BETA DISK interface. Beta disk 48, beta disk 128, brasilian clones of beta disk 48, russian clones of beta disk 128…

    ... 48 rom is set(bit D4 of port #7FFD is set) then paging mechanism ... in tr-dos rom set 128rom on port #7FFD. (on some new ... /> ADRESS WRITE READ
    #1F(31) command status
    #3F(63 ...
    velesoft velesoft August 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…

    ... help me understand how a Kempston joystick interface works, as I ... is trying to read from port 31.

    I appreciate this ...
    joefish joefish January 2014 Hardware
  • Games for two KEMPSTON joysticksMy "RTC module for DIVIDE" support connection of small JOYSTICK SPLITTER with two joystick connectors. First joy is kempston on port 31 and second is…

    ... . First joy is kempston on port 31 and second is kempston on port 95.
    kempston joysticks:

    GOLDEN AXE ...
    velesoft velesoft August 2014 Games
  • The history of ESXDOS, the DivMMC and the DivMMC EnJOY![img]http://benophetinternet.nl/hobby/divmmc_history/1%20esxdos.jpg[/img] These are the stories behind esxDOS, the most popular operating system e…

    ... br /> General use Kempston port (IN #1F)
    Kempston Mouse Via PS/ ... The Case
    Special System Port (#F7)

    ----------------------
    set skip all BIOS boot ...

    Alessandro was a bit busy, but a couple of ...
    bverstee bverstee October 2015 Hardware
  • Spectrum +2A floating bus portHi As I discovered in the past, Spectrum +2A (and probably +3) do have floating bus port. But it is not shown on all unused ports, only on some po…

    ... ) do have floating bus port. But it is not ... paging is disabled (bit 5 of port 32765 set to 1), ... br /> (with bit 0 set) if the port number has the ... mean, starting from port 1, stepping 4, until port 4093
    ... not have floating bus port, but it's incorrect ...
    chernandezba chernandezba January 2016 Hardware
  • WANTED: tape replacement for +2?Any tape replacement possible for a +2? My +2 works wonderfully but the incorporated datacorder is simply worn out and won't load ANYTHING. Dirty sig…

    ... -port FE is the ear input bit. The value read from this port ... of an OUT to port #FE will affect bit 6 as read ... machine will always return a set bit 6.

    Bits 5 ... keyboard and a joystick port (e.g. Kempston), the joystick takes priority ...
    Dr BEEP Dr BEEP November 2001 Sales
  • Spectrum IDE port addressesWith eight standard IDE ports to address and with the common access to information via the internet I would have thought that Spectrum IDE add-on har…

    ... of Kempston (some Kempston interfaces only test bit 5 or bit 7 ... for zero). Bit ... paging port

    - At least one address bit should be set ... and ZXATASP use 16-bit port access which other interfaces try ...
    baze baze July 2005 Development
<1234567…34>

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