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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 ...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…
... by Lemonize, which uses the floating bus effect to synchronize with the ... models don't have the bus effect, I took into myself ...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…
... some things. Others rely on floating bus, so the D7 resistor mod ...Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... delay routine. Cobra uses the floating bus reads but it can also ...Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... delay routine. Cobra uses the floating bus reads but it can also ... my current understanding of the floating bus :-D
[IMG]http ... .photobucket.com/albums/n608/daveyboyhughes/bus-1.jpg[/IMG]Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... anyway, don't use the floating bus - use a loop to delay ...Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…
... /> Contended IN... failed (0x7f)
Floating bus... failed (0x38)
Contended memory ...Fusetest port 0x7FFD test resultsHi, I'm adding the Spectrum 128K emulation to my FPGA core running on the V6Z80p platform. I'm doing some tests; running Fusetest, the machine is se…
... /> When 0x7ffd is read, the floating bus value is copied to the ...Fusetest port 0x7FFD test resultsHi, I'm adding the Spectrum 128K emulation to my FPGA core running on the V6Z80p platform. I'm doing some tests; running Fusetest, the machine is se…
... /> When 0x7ffd is read, the floating bus value is copied to the ... (OUT) to 0x7ffd with the floating bus value is correct behaviour. However ...Fusetest port 0x7FFD test resultsHi, I'm adding the Spectrum 128K emulation to my FPGA core running on the V6Z80p platform. I'm doing some tests; running Fusetest, the machine is se…
... (OUT) to 0x7ffd with the floating bus value is correct behaviour. However ...Fusetest port 0x7FFD test resultsHi, I'm adding the Spectrum 128K emulation to my FPGA core running on the V6Z80p platform. I'm doing some tests; running Fusetest, the machine is se…
That means you've written 0xff to the paging register, probably from the floating bus.JSpeccy v0.90Hi4all, A new JSpeccy version has been released at my project webpage. This new release have many corrections, some optimizations and a few new feat…
... by the byte from the floating bus being written to the paging ...JSpeccy v0.90Hi4all, A new JSpeccy version has been released at my project webpage. This new release have many corrections, some optimizations and a few new feat…
... by the byte from the floating bus being written to the paging ...JSpeccy v0.90Hi4all, A new JSpeccy version has been released at my project webpage. This new release have many corrections, some optimizations and a few new feat…
... has to do with the floating bus. None of our old 128K ... on what's on the floating bus.
Anyways, the fix ...Fusetest port 0x7FFD test resultsHi, I'm adding the Spectrum 128K emulation to my FPGA core running on the V6Z80p platform. I'm doing some tests; running Fusetest, the machine is se…
... paging register, probably from the floating bus.[/QUOTE]
OK! Finally ...48K/128K classificationI'm sorry if I've looked in the wrong places and not found it, but what are the rules regarding a game being listed as either: ZX Spectrum 48K ZX Sp…
... -English ROMs)
* requires the floating bus (original release of Arkanoid)
