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Search Again :: Adv Search 1000 results in 0.006s
<1234567…34>
  • New Spectrum Computer DevelopmentHey does anyone know of any decent new Spectrum clones being developed? I find it amazing how Zilog still produce a Z80 backwards compatible chip (an…

    ... the Z80 family, including the bus request/acknowledge pins, and adds 4 ...
    retrogod retrogod February 2009 Hardware
  • Sparky eZX-BASIC Project in need of FPGA ExpertYou probably are not familiar with this project, but it is a computer system based on Zilog's new eZ80 chip and the OS is a superset of ZX BASIC. Ju…

    ... The only way to introduce bus delays is to program ... pins properly. Since a bus request is only valid once an ... the bus.

    Sure, it can make a request ... do any sort of bus arbitration is between each ... a benvolent and cooporative bus master of old, the ...
    Sparky Sparky October 2004 Sinclair Miscellaneous
  • Spectrum 'slow down' hardwareAny one else got one of these ? If so do you find it useful ? [url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MESELX:IT&item=…

    ... />
    It works by sending bus request signals which halt the CPU ...
    Matt_B Matt_B October 2008 Hardware
  • Spectrum 'slow down' hardwareAny one else got one of these ? If so do you find it useful ? [url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MESELX:IT&item=…

    ... cycles) rather than a ?hard? bus request lasting several mS. Cute :-)
    RST#08 RST#08 October 2008 Hardware
  • Spectrum 'slow down' hardwareAny one else got one of these ? If so do you find it useful ? [url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MESELX:IT&item=…

    ... cycles) rather than a ?hard? bus request lasting several mS. Cute :-)[/QUOTE ...
    Matt_B Matt_B October 2008 Hardware
  • Spectrum 'slow down' hardwareAny one else got one of these ? If so do you find it useful ? [url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MESELX:IT&item=…

    ... cycles) rather than a ?hard? bus request lasting several mS. Cute :-)
    bus)
    [IMG]http://velesoft.speccy ...
    velesoft velesoft October 2008 Hardware
  • New Spectrum Computer DevelopmentHey does anyone know of any decent new Spectrum clones being developed? I find it amazing how Zilog still produce a Z80 backwards compatible chip (an…

    ... the Z80 family, including the bus request/acknowledge pins, and adds 4 ...
    velesoft velesoft February 2009 Hardware
  • ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…

    ... our intention, like in a Bus Request.
    RMartins RMartins August 2016 Hardware
  • How feasible is it to add a second CPU to the ZX Spectrum?Today with IDE, and USB, and TCP/IP and other wonderful technologies arriving on the ZX Spectrum, I'm beginning to wonder if we'll run out of CPU tim…

    The Bus request and bus acknowledge controls mean it is ...
    1024MAK 1024MAK December 2016 Hardware
  • ROM emulation in softwareHi, first of all -- I only have shallow / uni knowledge of hardware, electronics, and physics. So forgive me for asking things that are out of that …

    ... . Using the Z80 CPU's bus request pins (/BUSRQ and /BUSAK) the ...
    1024MAK 1024MAK June 2017 Hardware
  • ROM emulation in softwareHi, first of all -- I only have shallow / uni knowledge of hardware, electronics, and physics. So forgive me for asking things that are out of that …

    ... . Using the Z80 CPU's bus request pins (/BUSRQ and /BUSAK) the ...
    tstih tstih June 2017 Hardware
  • ROM emulation in softwareHi, first of all -- I only have shallow / uni knowledge of hardware, electronics, and physics. So forgive me for asking things that are out of that …

    ... . Using the Z80 CPU's bus request pins (/BUSRQ and /BUSAK) the ...
    1024MAK 1024MAK June 2017 Hardware
  • Were the full Sinclair Loki specs ever actually known?I was just curious. A lot was leaked to the media, but the exact specs seem different depending on source. Some say it could support up to 512x256 an…

    ... Z80 with the appropriate bus multiplexers. Initiated=BUS Request while it shifted memory ...
    cj7hawk cj7hawk August 2021 Hardware
  • Strange request!!This might sound like a strange request but does anybody know where I can get a movie file (avi, mpeg or whatever) of a Spectrum and ZX81 loading a p…

    ... might sound like a strange request but does anybody know where ...
    notthistime notthistime July 2003 Sinclair Miscellaneous
  • Instructions Project: (small) request for helpA small request for help with the [url="http://www.srcf.ucam.org/~pak21/spectrum/instructions.html"]Spectrum Instructions Project[/url]... The instr…

    A small request for help with the [url=" ...
    Philip Kendall Philip Kendall December 2003 Games
  • ZX-BUS?Hmmmm..... While reading Your posts here, I have an impression that various models of ZX Spectrum have various zx-bus ports. Is that true? I knew t…

    Hmmmm..... While reading Your posts here, I have an impression that various models of ZX Spectrum have various zx-bus ports.
    Is that true?
    I knew that ZX81 and Speccy have different zx-bus ports, but various models of Spectrum too??
    Yerz Yerz May 2004 Sinclair Miscellaneous
  • Bus Shelter DestroyerI have just uploaded another entry for the comp.sys.sinclair crap games competition 2005 that I've knocked up in record time tonight - Bus Shelter De…

    ... up in record time tonight - Bus Shelter Destroyer!

    Once ...
    BigBadMick BigBadMick April 2005 Games
  • Help please on a requestI have had the following request which I can' t help out with. Any suggestions please ? "I remember having a rpg for the spectrum (possibly +2) wher…

    I have had the following request which I can' t help ...
    ADJB ADJB October 2005 Games
  • Where can I get a bus-splitter cable?I no longer require a bus-splitter cable.

    I no longer require a bus-splitter cable.
    chev chev November 2005 Hardware
  • *WoS database feature request*Greetings, This message is primarily addressed to Martijn, but I've thought of making it public, so that other members may have input on the subject…

    ... , I have a small feature request. If implemented and successful, this ...
    GOC GOC August 2006 Sinclair Miscellaneous
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... memory contention and floating bus stuff in ZXDS and ... to appear on the floating bus.

    To ... as far as the floating bus is concerned, the very ... seem to appear on the bus several cycles later. The ... tech doc[/URL] about floating bus.
    Ramsoft's [URL ...
    Patrik Rak Patrik Rak September 2007 Emulators
  • The direct bus or indirect one... that is the questionThe Ethernet project continues...and I'm in a quandry. So I've managed to implement enough socket library for the W5100 that socket, bind, listen, a…

    ... most of the address bus to facilitate bus indirect mode. According to ... supports two parallel modes - bus direct mode (where the chip ... or buffers.

    Bus direct mode's advantage is ... do two LDIRs if necessary). Bus direct mode means accessing registers ...
    Winston Winston November 2007 Hardware
  • Pentagon floating bus timingI wanted to take a little break from working on the ZXDS UI yesterday, so I added support for Pentagon timing instead, so I can finally enjoy the lik…

    ... exact info about the floating bus behavior and timing. An explanation ...
    Patrik Rak Patrik Rak November 2007 Emulators
  • Data bus at interrupt timeIt is "well known" that some peripherals can put values other than 0xff on the data bus at interrupt time, thus meaning that IM2 is slightly more fid…

    ... than 0xff on the data bus at interrupt time, thus meaning ...
    Philip Kendall Philip Kendall March 2009 Hardware
  • Z80 Expander Bus ControllHello there my fellow forum chummies, I would like to ask a few technical questions, Now I come from an Amiga Hardware based background, and as yo…

    ... /> [list]
    [*]How is this bus regulated?
    say I have ... interfere with the Z80 expansion Bus
    [/list]

    okay ...
    Zetr0 Zetr0 June 2009 Hardware
  • Bubble Bus SoftwareI'm wondering why Infoseek has this down as "Bubblebus Software", when it's "Bubble Bus Software" on cassettes & adverts. Or, to be even more accurat…

    ... Software", when it's "Bubble Bus Software" on cassettes & adverts ... it's either "bubble bus" or "bubble bus software" in titles, and ... />
    The other Bubble Bus MIA, Curse of the Crown ... sale, probably because Bubble Bus ceased trading during that year ...
    Battle Bunny Battle Bunny July 2009 Infoseek database
  • How the World Works Part 1, Togo Football1. On the 8th January the Togo team bus, en route to a match in the African Nation's Cup in a separatist area of Angola (Cabinda), is machine gunned …

    ... 8th January the Togo team bus, en route to a match ... under the seats in a bus covered in blood expecting to ... /> 4. CAF declined Togo's request for 3 days mourning. Togo ...
    Jumping Stack Jumping Stack February 2010 Chit chat
  • DIVIDE PLUS - ZX bus protectorI make new ZX BUS PROTECTOR for use with DIVIDE PLUS interface. This is very small "convertor" for connection to new ZX BUS connector. PCB contain on…

    ... for connection to new ZX BUS connector. PCB contain only ... possible connect to new ZX BUS any interface (interface 1, ... for direct connection to ZX BUS on ZX Spectrum. Can ... .speccy.cz/other/zx-bus-for-divide-plus-fixed ... .speccy.cz/other/zx-bus-for-divide-plus-fixed ...
    velesoft velesoft November 2010 Hardware
  • Floating bus on 128K models[b]Background:[/b] i need run code with interrupt enabled but i need use stack instruction to maximize performance in copy/shift/mirror routines. dur…

    ... are:
    1) is floating bus present on all of 128 ...
    Fikee Fikee November 2010 Development
  • Hustler (Bubble Bus)According to an article in Pop.Com.Weekly (21.Jun.84, front page) Hustler was re-released in the UK as Minnesota Fats' Pool Challenge (although proba…

    ... are expected soon"). Apparently Bubble Bus licensed HesWare to sell the ... slightly unusual situation, as Bubble Bus were still selling the game ...
    Battle Bunny Battle Bunny April 2011 Infoseek database
<1234567…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • European Software Titles with an English version
    harriusherbartio on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
  • +3 Disk drive motor
    AndyC on April 21
  • Celebrity deaths...
    mel the bell on April 20

HitBox

Word Docs Hits
bus 4.3K 6.5K
request 2.3K 2.5K

Related Threads

  • CPU speed controller (SLOMO) + K-MOUSE + JOYSTICK + ZX BUS EXPANSION (3x throught zx bus)Anyone is interested of this hardware ?<br /> [img]http://velesoft.speccy.cz/other/km2016lp3d1.jpg[/img]<br /> <br /> It's horizontal version of K…
  • Quiz VI - Trident on VESA Local Bus....Something to keep everyone busy while Arjun sorts out his caboodle of questions....<br /> <br /> Ok, 12 quick fire questions.. <br /> Some cryptic - …
  • Yet another what game was it requestGame involved flying about picking up a hell of a lot of keys to open doors. I remember transferring energy from thrust to energy (or vice versa?) …
  • Possibly *weird* .WAV request?Hello there!<br /> <br /> WOS has sure moved on since I last visited back in '99. Looking great! :)<br /> <br /> Anyway, I'm in the middle of produci…
  • Another name the game request.can anyone remember the name of a Harvest Moon (nes/snes/GB) style game, where you had to grow plants and stop insects eating your crops and that? T…
  • HACKED GAMES REQUESTIf anyone would like any games hacking for the next issue of ZX Digest then please send your requests to [email="ZXDIGEST@YAHOO.CO.UK."]ZXDIGEST@YAHO…
  • Strange request!!This might sound like a strange request but does anybody know where I can get a movie file (avi, mpeg or whatever) of a Spectrum and ZX81 loading a p…
  • Instructions Project: (small) request for helpA small request for help with the [url="http://www.srcf.ucam.org/~pak21/spectrum/instructions.html"]Spectrum Instructions Project[/url]...<br /> <br …
  • request to leech tape inlaysHi, <br /> I'm after a copy of the zx speccy inlay scans for [url="http://www.tosec.info"]www.tosec.info[/url], so I begged the webmaster for permiss…
  • Proface AT internal circuit request (pin outs)Does anyone has the circuit of the interface as I have lost mine and I cannot connect it to my speccy.

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