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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…
... bit with memory contention and floating bus stuff in ZXDS and ... seem to appear on the floating bus.
To be ... However, as far as the floating bus is concerned, the very same ... URL] about floating bus.
Ramsoft's [URL="http://www.ramsoft.bbk.org/ ... -
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…
... and exact info about the floating bus behavior and timing. An explanation ... -
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…
... /> questions are:
1) is floating bus present on all of 128 ... -
Emulating a +2A with floating bus modBefore I start hacking Fuse's source... Does any existing emulator have an option to behave as a +2A with the [URL="http://www.secarica.ro/html/plus…
Before I start hacking Fuse's source...
Does any existing emulator have an option to behave as a +2A with the [URL="http://www.secarica.ro/html/plus3_hardware.html#inFFport"]floating bus modification[/URL]?
-Stephen -
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…
... (and probably +3) do have floating bus port. But it is not ... that +2A does not have floating bus port, but it's incorrect ... -
SPIN Public Beta 0.1b Available for downloadHi all, back again, and as just recently announced on CSS, SPIN has been updated. Here's the post to CSS (or the relevant parts): It's been a bu…
ANN: Spectaculator 2.5 available for downloadHi. I've just released a new version of Spectaculator, available from [url="http://www.spectaculator.com/"]http://www.spectaculator.com/[/url]. Hopef…
... /> Emulation
- Floating bus emulation as per Ramsoft technical docs (Sidewize and ...Hardware GuideI was thinking this might make a good sticky... [b]Service Manuals[/b] [URL="ftp://ftp.worldofspectrum.org/pub/sinclair/technical-docs/ZXSpectrum48K…
... .ramsoft.bbk.org/floatingbus.html"]The Floating Bus Explained[/URL] -Info about the Floating Bus ... and the 'snow effect' by Ramsoft ...One Man And His DroidPosted a few days back about control probs with a few games, after a bit of getting used to what to look for controls-wise and all the .txt files und…
Btw, for an explanation of the floating bus, visit [url="http://www.ramsoft.bbk.org/floatingbus.html"]http://www.ramsoft.bbk.org/floatingbus.html[/url]
:)Mysterious bit of codeHi everyone, I found the follow piece of code in a game and was wondering what it does. ld bc,40ffh ld e,40h loop ld a,r …
You may wish to see Ramsoft's "Floating Bus Explained" document for a thorough explanation of what's going on with reads from unattached ports.A few questions regarding EmuZwinI had posted this in the development forum and then remembered there was an emulators forum, so apologies for the repetition. 1. I have been trying …
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[quote]
4. Floating Bus implementation. I use this to ... an emulator's floating bus emulation accuracy using Ramsoft's test program ... br /> [url="http://www.ramsoft.bbk.org/tech/floatspy.zip ... "]http://www.ramsoft.bbk.org/tech/floatspy. ...Why did you choose your nick?Referencing the end (currently, thoough if more than a month or so have gone by it may by now be the middle) of [url="http://www.worldofspectrum.org/…
The other point is that Ramsoft's implementation recorded only key ... back anything which used the floating bus, etc.
Woody and ... /> Now all we need is Ramsoft to update the format spec ...Pocket Clive - 2 QuestionsHello, I've just started using Pocket Clive on my iPaq pocket PC, excellent emulator BTW. 1. I have just wrote a small BASIC program to randomly pi…
... />
It requires accurate floating bus emulation to run properly.
ramsoft.bbk.org/floatingbus.html"]http ... ://www.ramsoft.bbk.org/floatingbus.html[/ ... I've heard about the floating bus effect before, and knew it ...Pocket Clive - 2 QuestionsHello, I've just started using Pocket Clive on my iPaq pocket PC, excellent emulator BTW. 1. I have just wrote a small BASIC program to randomly pi…
... the routine probing the 'floating bus' is checking for the ... wrong by removing the 'floating bus' IN instructions, as ... RAMSOFT page as being affected by this issue, so presumably the 'floating bus ... method to remove 'floating bus' code from affected games ...RealXThis may be a dumb question but will RealX ever get released?
Also, it looks like some documentation errors exist in Ramsoft's floating bus article. It neither matches the real machine's behaviour or RealSpec's implementation.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…
... measure it who knows how (Ramsoft's floatspy). Sigh.
floating bus (because that T-state is ...Arkanoid and +2A, problems??Is there any kind of incompatibility with Arkanoid in a +2A? I load the game but when it's time to play, the stick doesn't move and nothing happens, …
... +3 also lacks the original "floating bus" behaviour found on the original ... (documented here [url]http://www.ramsoft.bbk.org/floatingbus.html[/url ...Arkanoid and +2A, problems??Is there any kind of incompatibility with Arkanoid in a +2A? I load the game but when it's time to play, the stick doesn't move and nothing happens, …
... +3 also lacks the original "floating bus" behaviour found on the original ... (documented here [URL]http://www.ramsoft.bbk.org/floatingbus.html[/URL ...People holding back the emulation sceneAs mentioned once again in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=22690"]this thread[/URL], some people think Ramsoft willfully…
FWIW, Ramsoft's tools and emulators can ... .
I've given Ramsoft a fair bashing in the ... to reveal their secrets, but Ramsoft promised faithfully that they would ... the first version of the floating bus documentation that was released. We ...Emulation accuracy and how it affects softwareHi folks. I was thinking of bodging together a rudimentary Spectrum emulator myself, not as a competitor to the other emulators, but as an integrate…
... /> Hardware quirks such as the 'floating bus' effect will also be absent ...ANNOUNCE: Fuse for Mac OS X 0.7.0Following the release of Fuse 0.7.0 is the unsurprising release of Fuse for Mac OS X 0.7.0 which should be available for download shortly at the Fuse…
... /> + Much improved contended memory and floating bus emulation.
+ Improved display timings ...(Belated) ANNOUNCE: Fuse 0.7.0 and libspectrum 0.2.2 releasedThe Fuse team is pleased to announce that release of Fuse 0.7.0, the associated utilities and version 0.2.2 of the Spectrum emulator support library,…
... /> + Much improved contended memory and floating bus emulation.
+ Improved display timings ...ANN: SpecEmu 2.3 - Minor UpdateHere's a minor update to the SpecEmu emulator - the emulator with an incredibly small filesize for a Win32 application, and backed up with an incredi…
... opcode contention timings.
- Improved floating bus emulation.
- A 1 cycle ...A few questions regarding EmuZwinA few questions regarding EmuzWin 1. I have been trying to write a program to generate multicolour effects on the Spectrum,ie more than 2 attributes…
... works ok.
4. Floating Bus implementation. I use this to ...A few questions regarding EmuZwinI had posted this in the development forum and then remembered there was an emulators forum, so apologies for the repetition. 1. I have been trying …
... works ok.
4. Floating Bus implementation. I use this to ...Problems with games on +2AHi! I have a +2A now and have problems running some games on it. I tought the resistor fix (to give it some kind of "floating bus" as the original 4…
... give it some kind of "floating bus" as the original 48k and ...Fuse 0.8.0.1 releasedI have just uploaded version 0.8.0.1 of the [url=http://fuse-emulator.sourceforge.net/]Free Unix Spectrum Emulator[/url] to SourceForge and WoS, wher…
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* Fix IN timings and floating bus behaviour.
* Fix widget UI ...Fuse for Mac OS X 0.8.0.1A bug fix version of Fuse for Mac OS X has been released soon or already here at WoS and at the dedicated sourceforge project: [url]http://sourcefor…
... ]
[*] Fix IN timings and floating bus behaviour.
[*] Fix crash if ...Harlequin ZX Spectrum Clone now 100% compatible!Hi all! The Harlequin ZX Spectrum clone now shows full timing compatibility with the ZX Spectrum! 8-) Both the ULA IO and memory contentions are fa…
... /> along with contended and uncontended floating bus reads.
Full details ...RUSSIAN SOFTWARE and real ZXRussian ZX games is writed on russian ZX clones and support hardware feature TURBO OFF ( for ZX clone ZS SCORPION ). Russian ZX clone ZS SCORPION use…
... and CPU read data from floating bus ( value #FF ). Software TURBO switching ... will ZX crash (data from floating bus is writed to paging port ... to paging port data from floating bus (can't be use)
floating bus (can't be use)
