World of Spectrum
  • Categories
  • Discussions
  • FAQ
  • Sign In
Home › Search
Title Search
@title beer Word 'beer' in title
User Search
  • @user admin Only posts by Admin
Text Search
  • @body beer Word 'beer' in the text
Phrase Search
"Hello World" Exact phrase match
Exclude Terms
  • car -red Search cars that are not red
"Or" Searches
  • honda | bmw 'honda' or 'bmw' results
Multi-Field
@(title,body) hello Both contain 'hello'
WildCard
  • hond* civ* Match all with an astrix
Combination
  • @title bmw @user admin
See more supported syntax examples
Search Again :: Adv Search 1000 results in 0.023s
<1…15161718192021…34>
  • 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…

    ... 's the results from recent floating bus test 2, there were 2 ...
    Your Spec-chum Your Spec-chum 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…

    ... you're experimenting with the floating bus sync now. Idk it's ...
    Hikaru Hikaru 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…

    ... value will appear on the floating bus at which T state, but ...
    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…

    Seems like reading from screen memory changes the floating bus value (or, maybe, not only reading, but also writing, and also from/to non-screen memory).
    weiv weiv 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…

    ... from screen memory changes the floating bus value.[/quote]
    Like [i ...
    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…

    ... from screen memory changes the floating bus value (or, maybe, not only ...
    Hikaru Hikaru 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…

    Well, it seems simple. Reading from screen memory leads to changing the value of internal ULA register, which is read from floating bus ports. Regardless of whether the screen memory is being read by processor or ULA.
    weiv weiv 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…

    Now we need to explore how screen (and non-screen) memory reading/writing by Z80 affects to floating bus. Maybe it depends from the sort of memory - fast and slow pages, and ROM pages.
    weiv weiv 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…

    Thank you. Now we are sure that in extended memory paging mode the floating bus is read exactly the same as in normal memory paging mode.
    weiv weiv 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…

    ... mind helping. Understanding how this floating bus works though I'm afraid ...
    Your Spec-chum Your Spec-chum 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…

    ... operations really influence to the floating bus value. (And, it looks like ... ROM page leads to changing floating bus value).
    weiv weiv 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…

    ... } ) OR 1 {as usual for floating bus reading}
    weiv weiv 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…

    ... code fetching, influences to the floating bus value. (And writing too, of ...
    weiv weiv 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…

    ... have persisted, and cracked the floating bus mystery. I enjoyed helping you ...
    Your Spec-chum Your Spec-chum 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…

    ... have persisted, and cracked the floating bus mystery. I enjoyed helping you ...
    Hikaru Hikaru 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…

    Or It still can be not quite exact emulation of the floating bus (but also related to the timings).
    weiv weiv 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…

    ... of the display file), the bus retains the value that was ... operation code fetching) affects on floating bus too. So, (the value of ... of floating bus ports.
    6. The main pattern of the floating bus reading ...
    weiv weiv September 2017 Development
  • Loadsa bullets on screen (silkworm)Did games like silkworm just draw everything to the screen or did they have complicated optimisations? and the types of games where sprites can occu…

    ... ). [i]Cobra[/i] uses the floating bus trick to sync to the ...
    Ast_A_Moore Ast_A_Moore October 2017 Development
  • ZX Spectrum +3 repairI have my first +3 here, and it needs repairs. Hoping someone here can help me out. When I power it on I get this screen with black and white line…

    Like I mentioned in the floating bus thread, the Spectrum is a quantum computer. Can’t be absolutely sure about anything, and if you try to take any measurements—all bets are off.
    Ast_A_Moore Ast_A_Moore November 2017 Hardware
  • Test of screen switching timings.I modified the btime.tap test by Jan Bobrowski to explore the timing of screen switching. The new test, ptime-128, produces different results on diff…

    Indeed. Tried Fuse, RVM, and SpecEmu. It’s all over the place.

    Now you can understand my puzzlement and frustration with the floating bus mystery back in September.
    Ast_A_Moore Ast_A_Moore November 2017 Emulators
  • Test of screen switching timings.I modified the btime.tap test by Jan Bobrowski to explore the timing of screen switching. The new test, ptime-128, produces different results on diff…

    ... puzzlement and frustration with the floating bus mystery back in September.[/quote ... found a video about the floating bus: http://zx-pk.ru/threads ...
    weiv weiv November 2017 Emulators
  • Space Invaders Emulator for the Spectrum 128/+2/+2A/+2B/+3My Space Invaders Emulator for the Spectrum 128/+2/+2A/+2B/+3 is now available for download from: [url="https://c.gmx.com/sizx@gmx.com/DVQXAXrLRl2d…

    ... the 16K), and uses the floating bus for syncing on all of ...
    Ast_A_Moore Ast_A_Moore December 2017 Brand new software
  • Send in the ClonesPlease name all the Spectrum clones out there ( I would say I need it back on my desk in 5 minutes , but I will be a bit more generous in this case!…

    ... in simple terms what a 'floating bus' is? I read the Sinclair ... had always thought that a 'bus' was a term for a ...
    mik3d3nch mik3d3nch January 2018 Hardware
  • Some questions about the Timex TC2048/TC2068I have been doing some research about the specs of these 2 machines but I suppose it would be better to ask for advice in the forum since I have neve…

    ... ula attribute bytes on the floating bus, an example being Arkanoid. ... made the ts2068's expansion bus compatible with the zx81/ ... spectrum by changing the expansion bus to be compatible with ... the z80 cpu to recover floating bus behaviour (this is something ...
    Alcoholics Anonymous Alcoholics Anonymous January 2018 Hardware
  • Some questions about the Timex TC2048/TC2068I have been doing some research about the specs of these 2 machines but I suppose it would be better to ask for advice in the forum since I have neve…

    ... ula attribute bytes on the floating bus, an example being Arkanoid. ... made the ts2068's expansion bus compatible with the zx81/ ... spectrum by changing the expansion bus to be compatible with ... the z80 cpu to recover floating bus behaviour (this is something ...
    Black_Cat Black_Cat January 2018 Hardware
  • The I register pointing to $40–$7f causes ULA snow and a crash. Or does it?I have heard it from numerous sources, including a few members of this forum, that 128K/+2 machines crash if the I register points to a range of $40–…

    ... also had to remove the floating bus sync, but that’s irrelevant ...
    Ast_A_Moore Ast_A_Moore February 2018 Development
  • Fuse for macOS 1.5.1 ReleasedA new version of Fuse for macOS has been released at the dedicated sourceforge project: https://sourceforge.net/projects/fuse-for-macosx/ Note …

    ... the proper operation of the floating bus emulation and add it to ...
    Ast_A_Moore Ast_A_Moore March 2018 Emulators
  • I introduce myself and my emulator.Hi! My name is Marta, and I've been a Speccy user for 30+ years now. During the past year I decided to write my own emulator, just to see if I cou…

    ... haven't implemented yet the floating bus values from contended memory reads ...
    TheMartian TheMartian March 2018 Emulators
  • I introduce myself and my emulator.Hi! My name is Marta, and I've been a Speccy user for 30+ years now. During the past year I decided to write my own emulator, just to see if I cou…

    ... perfect as far as the floating bus was concerned.) :D

    Ast_A_Moore Ast_A_Moore March 2018 Emulators
  • Vega Spectrum KeymapsHi everybody, I am new on here, so apologise if this is int the wrong category. I have searched the forums and can find some keymaps for the vega …

    ... Vega doesn’t emulate the floating bus on the Spectrum, so my ...
    Ast_A_Moore Ast_A_Moore June 2018 Emulators
<1…15161718192021…34>

Latest Posts

  • Happy 40th Birthday to the Amstrad CPC464!
    dmsmith on 6:19PM
  • Another Birthday! The Game Boy Is 35!
    dm_boozefreek on 6:17PM
  • I bought an accoustic guitar. How do you play it?
    Maroc's Other Projection on 6:04PM
  • I am currently watching.....
    Antiriad2097 on 5:05PM
  • European Software Titles with an English version
    harriusherbartio on 12:06PM
  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on 11:21AM
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 11:01AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade 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

HitBox

Word Docs Hits
floating 2K 2.4K
bus 4.3K 6.5K
3 69.8K 108.5K

Related Threads

  • Spectrum +3 - Copy games from external 3.5 to internal 3 inches floppy disk [Help]Hello,<br /> <br /> I've bought a kit to connect an [b]external 3.5 floppy disk[/b] to +3.<br /> <br /> [img]https://i.postimg.cc/jdYRQD8T/kit.jp…
  • Spectrum +3 Leaderboard Par 3Anyone care to make me an offer for this? Box is squashed but instructions and two disks are fine.
  • Connecting a 3.5inch external drive to a +3Anyone help me on this subject.<br /> <br /> I have tried connecting a DS/DD 80-track 3.5 inch disk drive to the Drive B port of my +3, but I can't g…
  • Connecting up a +3 3" drive to an AmigaI'm wondering if anyone has done this?<br /> <br /> I'm hoping that as all Amiga disk operations are done at the track (rather than sector) level, it…
  • Fitting 3.5" floppy as +3 Drive B:Anyone done this? I see the cabling differences as talked about on the same page as the sound correction schematics, but thought I'd see whether anyo…
  • +3 3.5 Drive fitment?anyone replaced the 3inch drive with a 3.5drive, i know ive seen some around? any websites or details of whats needed and whats to be done? Thanks! :)
  • Spectrum +3 3.5 disk driveDoes anyone know of a web site or person which could build me an interface for the +3 to attach a 3.5" disk drive. I want an external disk drive not…
  • SPECTRUM 3+ , MULTIFACE 3 AND LOADS OF GAMES![url="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&amp;rd=1&amp;item=8162276085&amp;ssPageName=STRK:MESE:IT"]http://cgi.ebay.co.uk/ws/eBayISAPI.dl…
  • Spectrum +3 and Multiface 3 auctions...Hi again all - got a couple more auctions on eBay, one for a +3 "Currys outfit" (it's working: drive belt replaced recently) and one for a Multiface …
  • 3 inch + 3.5 inch disk labelsHello before I go to the trouble of making my own labels I thought I would ask the wise people of WOS, is there anywhere I can buy labels for the 2 d…

Related Searches

  • floating bus
  • cobra floating bus
  • floating bus fix
  • floating bus in c
  • floating bus 2a
  • floating bus 2
  • floating bus yanki
  • floating bus yank
  • floating bus yankee
  • 2a floating bus
  • spectrum 2a floating bus
  • floating bus test program
  • floating bus color
  • ramsoft floating bus
  • 3 floating
  • floating bus 3
  • 3 floating bus woody
  • ay floating bus
  • hikaru floating bus
  • floating bus interrupt

Copyright © 2024 World of Spectrum