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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…
... the 470ohm resistor but my +2A became unstable so in the ... floating bus port to ffh port.
But as I said , the +2A ... /+3 do have floating bus port, but doesn't ... -
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…
... "it does not have a floating bus" description that has been used ... years when talking about the +2A, +2B and +3.
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…
... for floating bus effects would still have to specifically test for +2A/+3 ...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…
... might know, this is partly floating bus-related, but the actual issue ... what you see on the +2A and later models. This I ... mechanism in the form of floating bus reads. This improves the situation ... 's finally music on the +2A's among other things :) )
Spectrum 128k+2 on tvHi, I want to buy a 128+2, did have one years ago, can i let it work on a flat tv screen, if so what do i need to do this.
... with games that need the floating bus (Sidewize, Arkanoid etc), and operates ... />
If you have a +2A (black) then you need a ...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…
... on a +2A/+3) get the result of the "floating bus". This will ...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…
... on a +2A/+3) get the result of the "floating bus". This will ... ]
In Timex machines floating bus is 0, if I remember ...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…
... on a +2A/+3) get the result of the "floating bus". This will ... ]
In Timex machines floating bus is 0, if I remember ... 's the issue with the +2A/+3, as IIRC they don ...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…
... 's the issue with the +2A/+3, as IIRC they don ... .[/quote]
Sorry, if +2A/+3 don't have I ... by I/O) but exhibit floating bus, then this idea is useless ...128K memory bank selection to avoid contention issuesI'm currently developing a game and I'm trying to get my head around the memory contention issues of the various 128K/+2/+2A/+3 spectrum models in or…
... distinguish between 128K/+2 from +2a/+2b/+3 is to use ... Spectrums do not have the floating bus ("port #FF"). Therefore, you can ... if this computer has the floating bus (assumes that screen is filled ...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…
... represent bytes read off the floating bus port, #0FFD in this case ... 's anything similar to floating bus functionality on the +2A/+3 models, I ...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…
Forget ZEsarUX behaviour with floating bus port on +2A, it does an aproximation, not ... the past on my real +2A, as you may see on ... has, some kind of a floating bus, but I still don't ...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, @richl! You have just successfully beta tested the first Spectrum game to use the floating bus for synchronization on a +2A/+3. I’ll post more when I get home.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…
... when I try it via +2a mode in Spectaculator. I dunno ... doesn’t emulate the floating bus on a +2A/+3 properly (or at ...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…
I suppose, it's need to test floating bus with extended memory paging modes of +2A/+3, for full information.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…
... for floating bus testing in extended paging mode of +2A/+3? Maybe floating bus reading ...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…
... .[/quote]
Right. Using the floating bus as a way of syncing ... /> So, neither the quirky +2A/+3 bus behavior, nor the “standard” 48K ...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 need to know how floating bus works in extended paging mode ... need to know about +2A/+3 floating bus for using it in new ...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…
... need to know about +2A/+3 floating bus for using it in new ...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 need to know how floating bus works in extended paging mode ... need to know about +2A/+3 floating bus for using it in new ...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 need to know how floating bus works in extended paging mode ... need to know about +2A/+3 floating bus for using it in new ...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…
... influence of memory operations to floating bus probably concerns "slow" memory pages ... 4,5,6,7 for +2A/+3 (for 128/+2 they ...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…
... influence of memory operations to floating bus probably concerns "slow" memory pages ... 4,5,6,7 for +2A/+3 (for 128/+2 they ...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…
Looks like we solved all the mysteries of the +2A/+3 floating bus. Thanks so much to all participants of the exploration! :)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…
[quote="weiv;921830"]Looks like we solved all the mysteries of the +2A/+3 floating bus. Thanks so much to all participants of the exploration! :)[/quote]
Indeed! Thanks to all! :)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…
... all the mysteries of the +2A/+3 floating bus. Thanks so much to ...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…
... all the mysteries of the +2A/+3 floating bus. Thanks so much to ... very special version. On my +2A, after pressing a key, intermittent ...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…
... determined that the +2A/+3 machines have a floating bus, and figured out ... Spectrum game to use the floating bus on [i]all[/i] ... :D
The floating bus on the +2A/+3 behaves differently from ... 13 . . . 4093)
2. The bus always returns $FF if bit ...New Game: A Yankee in Iraq (2017). A shoot-em-up.Last year, I [url="https://www.worldofspectrum.org/forums/discussion/53207/new-game-2016-revival-a-yankee-in-iraq-1992"]resurrected my old shoot-em-u…
... optimizations
—Now uses the floating bus for synchronization. [b]The first ... to use this method on +2A/+3 machines![/b]
Should I sell my +2A?The +2A was the last Spectrum I bought and to be honest I never gave it much use :| Unlike the 48k, 48+ and +2 grey on which I have played many ga…
... -from-people-with-a-2a-3"]solved the floating bus mystery[/url] on ... the +2A/+3, many previously incompatible ... a 128K/+2 and a +2A and compare the sampled speech ...
