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GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…
... back?
To avoid floating bus problems you can read a ... -
128K Contention - How to get it right?With my recent hardware hackery, I've built a 128K (toastrack) clone. I can't quite get the contention right though. What I'm lack is a clear descri…
... the +3 (and that the floating bus value is read on the ... -
128K Contention - How to get it right?With my recent hardware hackery, I've built a 128K (toastrack) clone. I can't quite get the contention right though. What I'm lack is a clear descri…
... . The value written is the floating bus value, which means that unless ... -
general beginner queriesHi, I bought myself recently a +3 and a devide extension. I was not in touch before with the speccy, but I am really surprised and delighted about th…
... is that it fix the "floating bus"-issue which can crash some ... -
general beginner queriesHi, I bought myself recently a +3 and a devide extension. I was not in touch before with the speccy, but I am really surprised and delighted about th…
... is that it fix the "floating bus"-issue which can crash some ... )
- fix stability of data bus with IM2 vector
- enable ... -
general beginner queriesHi, I bought myself recently a +3 and a devide extension. I was not in touch before with the speccy, but I am really surprised and delighted about th…
... is that it fix the "floating bus"-issue which can crash some ... -
Spectrum DIVIDE and Kempston Interface ProbsI got my DIVIDE quite a while back and was using it on a Spectrum +3, but noticed some games loading corrupt and not all games having proper joystick…
... and soldering a wire for floating bus support so that games like ... -
NEW KEMPSTON interface for ZXHi. Lotharek has released a new KEMPSTON interface for people who doesn't need AY on-board and want to have some really small device. [url]http:/…
... connector
+ through ZX bus connector
- kempston port ... are unused = return part of floating bus value. PRINT IN 31 not ... -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... everything else you return a floating bus value (see the FAQ or ... wiki for info on the floating bus) or just return 255 for ... temporary placeholder for implementing the floating bus, while you develop the emulator ... -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... correctly returning 255 (or a floating bus value) for the port reads ... -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
If your emulator supports the floating bus, you can try the first ... -
Emulation of ZX Spectrum 128+2 (grey)Please read this thread: [url]http://www.worldofspectrum.org/forums/showthread.php?t=35523[/url] result: exist 3 (or more) versions of grey ZX Spect…
... . Reading from 0x7ffd returns the floating bus value, so with some clever ... -
Emulation of ZX Spectrum 128+2 (grey)Please read this thread: [url]http://www.worldofspectrum.org/forums/showthread.php?t=35523[/url] result: exist 3 (or more) versions of grey ZX Spect…
... . Reading from 0x7ffd returns the floating bus value, so with some clever ... 7FFD is fast and data bus contain #FF (pull-up)
bus contain #FF (pull-up).
floating bus (if ula show border then ... -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... 'll have to start implementing floating bus, flags 3+5 (MemPtr) and ... -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... less wrong than assuming the floating bus supplies $ff all the time ... -
What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…
... go as well. What about floating bus? Is that known to work ... -
What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…
... go as well. What about floating bus? Is that known to work ... ?[/QUOTE]
FLoating bus cannot work as there's ... -
Kralizec, a MSX development group, publishes "MajiKazo" for ZX Spectrum[youtube]wJI30FyT7Qw[/youtube] It's a port from a MSX game called [URL="http://www.generation-msx.nl/msxdb/softwareinfo/3449"]MajiKazo[/URL] release…
... /shirka/LIBROS_EBOOKS/MANUAL_ESPECTRUM/floatingbus.html"]floating bus[/URL]. -
What was the best Designed Speccy???So what does the World Of Spectrum think the best Designed Spectrum was? [URL=http://imageshack.us/photo/my-images/845/thespectrums.jpg/][IMG]http:…
... Amstrad designs "break" like the floating bus aren't features, they're ... -
Spectrum +3, Issue 2...I have just had plonked on my desk a nice issue 2 Spectrum +3. I'm not sure if its 100% working yet, as I have not plumbed it into a telly. So, assu…
... the games that need the floating bus on your +3 then yes ... -
Use a +2/+3 case as a replacement keyboard for 48KI was just wondering if a 48K Spectrum motherboard could be housed in a +3 case, and somehow the keyboard be connected so that it could have a proper…
... is there to do anyway? floating bus "fix"... what else?) -
Use a +2/+3 case as a replacement keyboard for 48KI was just wondering if a 48K Spectrum motherboard could be housed in a +3 case, and somehow the keyboard be connected so that it could have a proper…
... is there to do anyway? floating bus "fix"... what else?)[/QUOTE]
Does the floating bus fix give 100% compatibility?
Use a +2/+3 case as a replacement keyboard for 48KI was just wondering if a 48K Spectrum motherboard could be housed in a +3 case, and somehow the keyboard be connected so that it could have a proper…
Disable interrupts?Well, I've read the bits from the David Webb book about interrupt modes and (vaguely) appreciate the principles behind having a vector table, after r…
... value you get on the bus is pretty much deterministic. If ... what they put on the bus. I.e., it works exactly ... get screwed over by the floating bus (because it may not be ... what value is on the bus on the speccy.Disable interrupts?Well, I've read the bits from the David Webb book about interrupt modes and (vaguely) appreciate the principles behind having a vector table, after r…
... get screwed over by the floating bus (because it may not be ... what value is on the bus on the speccy.[/QUOTE]
floating bus, but I understood your text ...Maritrini and Cray 5 loading problemsHas anyone else here had issues loading either of these on a 128k? No matter what I try, both these games refuse to load properly. I can get both t…
... pair gets put on the bus after an instruction fetch for ... don't have the whole floating bus thing.
I'm ...Maritrini and Cray 5 loading problemsHas anyone else here had issues loading either of these on a 128k? No matter what I try, both these games refuse to load properly. I can get both t…
... behaviour, EVEN when secaria's floating bus fix is implemented (a resistor ...+2A 128k Loading issuesJust recieved a +2A and tried to play a few games. All the games loaded fine in 48k mode, but in 128k they just reset the machine. Tried: Terramex,…
... /> These roms won't fix 'floating bus' issues (as far as I ...+2A 128k Loading issuesJust recieved a +2A and tried to play a few games. All the games loaded fine in 48k mode, but in 128k they just reset the machine. Tried: Terramex,…
... /> These roms won't fix 'floating bus' issues (as far as I ...Incorrect Spectrum +3 emulation: different results on Fuse and SpecEmuWhen developing and testing [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0027591"]Rotatrix[/URL], I noticed different results on Fuse and S…
...
Contented IN... passed
Floating bus... skipped (B=0x01)
Contended ...
