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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…
... 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 ... -
Introducing SpectREMYep, yet another Spectrum emulator, this one being for Mac OS. Writing my own Spectrum emulator has been a bucket list item for a while. While I'm…
... proper emulation of the floating bus on the +2A/+3, and yours will ... -
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 ...MAME in spectrum emulationHey to all Does anyone use MAME as a emulator port for any Speccy HW? I was so far away from MAME developments I forgot they merged with MESS whic…
... desire to implement the floating bus behavior on the +2A/+3; others seemed ... ? The ULA snow effect? The floating bus? Accurate sound? Timings? Otherwise, why ...MAME in spectrum emulationHey to all Does anyone use MAME as a emulator port for any Speccy HW? I was so far away from MAME developments I forgot they merged with MESS whic…
... desire to implement the floating bus behavior on the +2A/+3; others seemed ... ? The ULA snow effect? The floating bus? Accurate sound? Timings? Otherwise, why ...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 ...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 ... +2A, and along with several other changes, they “fixed” the floating bus ... the Spectrum +2A/+3 did in fact have the floating bus all along ... first game to use the floating bus on these machines.
...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 …
... complete emulation of the floating bus on the +2A/+3. Looks like it ... the proper operation of the floating bus emulation and add it to ...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…
Neat. Does it emulate the floating bus on the +2A/+3?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…
[quote="Ast_A_Moore;936154"]Neat. Does it emulate the floating bus on the +2A/+3?[/quote]
No, it doesn't yet :( I just did the +2A timings during the last month, and I forgot that there was a floating bus-like effect in these models...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…
[quote="Ast_A_Moore;936154"]Neat. Does it emulate the floating bus on the +2A/+3?[/quote]
lmao, give that person time! They already said there was stuff they needed to implement first lolI 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…
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…
... . Does it emulate the floating bus on the +2A/+3?[/quote]
2A timings during the last month ... forgot that there was a floating bus-like effect in these models ...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!…
... the Spectrum +2A/+3 did in fact have the floating bus all along ... 't discover the +2A & +3 had a floating bus...
https ...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…
... +2A implementation) :)[/quote]
And I wish I’d discovered the floating bus ... on the +2A/+3 back in 1987 ...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…
... I’d discovered the floating bus on the +2A/+3 back in 1987 ...Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... investigation of the floating bus, I determined that the +2A/+3 apply port ...Which to buy? +2/+2a/+3?Sorry - I did a quick bit of lunchtime googling, it sounds like the grey +2 is the best machine, as it has the board without the reduced chipset. I …
... a +2A or +3 to fix the [s]floating point[/s] "floating bus" issue ... +3e ROM set in a +2A/+2B would be good ? (not ...Limitations of emulationsYears ago at a trade fair, I got chatting to the guys who programmed [i]Gyron[/i]. They were demonstrating it and showed me an undocumented feature: …
... and description of the floating bus on the Spectrum +2A/+3 is slowly ...Limitations of emulationsYears ago at a trade fair, I got chatting to the guys who programmed [i]Gyron[/i]. They were demonstrating it and showed me an undocumented feature: …
... and description of the floating bus on the Spectrum +2A/+3 is slowly ...
