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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…
... realize something last night. The Spectrum is a true quantum computer ... value will appear on the floating bus at which T state, but ... -
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 ... -
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 ... -
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…
... tackled down the floating bus nitty-gritty on the +2A/+3, I have ... -
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…
... tackled down the floating bus nitty-gritty on the +2A/+3, I have ... discovery of fb on the +2A/+3, and wrote that test ... -
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…
... , or was that only a floating bus test aid?
Here ... &action=defaultclick"]the +2A/+3 floating bus version of SpecEmu[/url], as ... -
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…
... decided to tackle the floating bus on the +2A/3 was because I ... or was that only a floating bus test aid?[/quote]
... Yes, just a floating bus visual gimmick. That’s the ... &action=defaultclick"]the +2A/+3 floating bus version of SpecEmu[/url], ... -
Most accurate display on emulatorWhich Windows emulator has the most accurate display. I am making a game and one of the tiles is not showing correctly on an real spectrum +2 machin…
... after we tackled the floating bus on the +2A/+3, SpecEmu and Spectramine ... -
Things you only found out recently2014 - First found out about the existence of the QL, by the time I was reading magazines all mentions had ceased. 2017 - Found out that Frank Sid…
... the +2A/+3 machines [i]do[/i] exhibit the floating bus quirk, and ... -
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. -
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…
... the mystery of the floating bus on the +2A/+3, so I feel ... />
(This is on a +2A).
Port 16385
Detecting +3 / +2AWhat's a simple but reliable way to detect if code is running on a +2A/+3? My first though was to try switching to ROM2 and then checking for the …
[code]
ld a,(2899) ;+2A/+3 ROMs return 126
cp 126
jr z,its_a_plus
[/code]
That’s how I did it in [i]A Yankee in Iraq[/i] to handle the floating bus sync differently on these machines.Detecting +3 / +2AWhat's a simple but reliable way to detect if code is running on a +2A/+3? My first though was to try switching to ROM2 and then checking for the …
... percent reliable detection of a +2A/+3 that [i]does not ... from contended RAM on the bus
ld a,$0f
2A/+3
[/code]
floating bus behaves on the +2A/+3. Follow the ...Modern Spectrum Games Advent CalendarSo... it is done. The main reason for my return from the shadows earlier this year was because I knew the greatest Christmas present I ever had was c…
... , side B was for the +2A and +3. I found that ... wouldn't run on the +2A/+3, but side B would ... +2, since it uses the floating bus to synchronize) is there because ...Modern Spectrum Games Advent CalendarSo... it is done. The main reason for my return from the shadows earlier this year was because I knew the greatest Christmas present I ever had was c…
... ;930186"]since it uses the floating bus to synchronize[/quote]
I ... in situ. The floating bus synchronization for the +2A/+3 would have to ... handle both types of the floating bus. There’s plenty of time ...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 ... (which [i]is[/i] a Spectrum first).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. That ... compatible with the spectrum by changing the expansion bus to be compatible ... ts/tc2068. The ts2068 cartridge spectrum emulator is nothing more than ...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. That ... compatible with the spectrum by changing the expansion bus to be compatible ... ts/tc2068. The ts2068 cartridge spectrum emulator is nothing more than ...ForumsWe are aware that the forums have suffered with the CPU fix a few weeks ago. Fortunately, we were already working on new forums that will address the…
... the discovery of the floating bus on the +2A/+3 started with my ...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 …
... complete emulation of the floating bus on the +2A/+3. Looks like it ...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 …
... Spectrum test program that could test the proper operation of the floating bus ...
