-
A Yankee in IraqI'm testing the game on the zx next and it currently hangs right after the game starts no matter what timing regimen and contention pattern is chosen…
... as possible to a real +2A/+3. Then the game will ... it’s running on a +2A/+3 and then makes the ... if we're on a +2A/+3. If we're not ... br />
ld a,(2899) ;+2A/+3 ROMs return 126
[/code]
The floating bus loop itself looks like this ... -
Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... to fix it for the +2A/+3. For [s]incorrectly implemented ... fix[/url] that removes the floating bus dependence altogether. Both of these ... -
ZX Spectrum rescued from a friend, has Issues.Hi guys, I've recovered this ZX spectrum 48K from a friend. It's a 1984 ISSUE 6A. He told me the last time it was turned on was about 30 years ago!.…
... ’s games that uses the floating bus for syncing. Try the original ... ) of games that use the floating bus:
[i]Cobra[/i ... ] also uses the floating bus. It even has a special +2A-compatible version ... exact same behavior on a +2A/+3.
I’ve ... -
ZX Spectrum rescued from a friend, has Issues.Hi guys, I've recovered this ZX spectrum 48K from a friend. It's a 1984 ISSUE 6A. He told me the last time it was turned on was about 30 years ago!.…
... ’s games that uses the floating bus for syncing. Try the original ... ) of games that use the floating bus:
[i]Cobra[/i ... ] also uses the floating bus. It even has a special +2A-compatible version ... exact same behavior on a +2A/+3.
I’ve ... -
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 unattached ports, whereas the +2A and +3 ASIC, when ... in all cases. The +2A/+3 floating bytes will appear on all ... ---- ---- --0-). With paging disabled, the +2A/+3 will always return #FF ... contention on your page about floating bus is incorrect - it's ... -
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…
... br /> 48K 128K +3 ULA bus
-----------------------------
14338 ... doubt you could really read floating bus from even ports.
... record, the pattern of +2A/+3 models is 7 contended ... think it's stock floating bus test just modified to ... -
Fuse/SPIN vs Spectaculator border timingsHello, I'm trying to figure out at which moments the 48K ULA samples the current border color into its internal latch. To do that I wrote a small …
... nailed the sampling timing of +2A/+3 machines. At that point ... was believed there is no floating bus to test it with (which ... we discovered the difference between +2A and +3 screen paging pattern ... -
ZXDS 2.0.0Hello, after few months of intense work, I am finally ready to announce [url="http://zxds.raxoft.cz"]new ZXDS release[/url] for Nintendo 3DS. The …
[quote="Patrik Rak;57390"]floating bus emulation for +2A/+3 machines.
[/quote]
50+ FPS GAMESHi guys) Which was the first Speccy game with 50/60 frames per second? And what was the main reason? Thank you
... I was working on the floating bust fix for [i]Sidewize ... ] and had Steve abandoned the floating bus concept. Probably for the same ... if) it worked on the +2A/+3. Hence the drop in ...MultiCart for TC2068I've got one Portuguese Timex Computer 2068, but built-in AY sound chip and joystick interface are not widely used on this machine. Also compatibilit…
@colonel32: There is no floating bus in +2A/B & +3 also, decoding ... . In Timex there is no floating bus either and the paging in ...MultiCart for TC2068I've got one Portuguese Timex Computer 2068, but built-in AY sound chip and joystick interface are not widely used on this machine. Also compatibilit…
There is a floating bus in +2A/B & +3, but it ... worked on shadow screen or floating bus yet.The latest build of Specemu?The latest version of Specemu (a fantastic emulator, BTW) I have is SpecEmu-3.1.b150912.zip, which is a year old now, but knowing Woody he's probably…
D’oh. The floating bus on the +2A/+3 is broken in this build. Build 271021 is fine, so I’m sticking with it.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…
... /> Added ULA Snow effect, and Floating bus based on RamSoft's technical ...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 ...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 ...Hardware GuideI was thinking this might make a good sticky... [b]Service Manuals[/b] [URL="ftp://ftp.worldofspectrum.org/pub/sinclair/technical-docs/ZXSpectrum48K…
... /floatingbus.html"]The Floating Bus Explained[/URL] -Info about the Floating Bus and the ...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…
... />
* 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 ...IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…
... -A15 during an I/O bus cycle.
What I ... Z80 wants to initiate a bus cycle that might affect contended ... Z80 can only read FFh (floating bus).
Convinced myself about ... only contends the I/O bus cycle if A8-A15 falls ...Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... memory not emulated yet
[*]Floating bus not emulated yet
[*]Quick ...JSpeccy: New emulatorHi there, Jos? Luis S?nchez (zx81 at ono dot com) has developed a new ZX Spectrum emulator in Java, with a very accurate Z80 emulation. The message …
... emulation (Uridium, Overscan Demo)
- Floating bus emulation (Arkanoid, Sidewize)
- Speaker ...IM2 Loading on +3EHi there Speccy Guru's, As some of you know, I've spent a while building the ultimate image for +3e, it's currently at 6000+games and demos and i've…
... 's not due to the floating bus, maybe the real hardware changes ...Tricks with IN 31It's generally considered unwise to use a Kempston joystick's fire button to start a game, because the floating bus effect can make arbitrary data ap…
... start a game, because the floating bus effect can make arbitrary data ...Contention detectionJust a thought, based on discussion elsewhere... Is there any way of telling if reads/writes are being contended around the time that they happen? L…
... .
There's the floating bus method, for telling whether the ...
