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Fuse 0.9.0 releasedVersion 0.9.0 of [url=http://fuse-emulator.sourceforge.net/]Fuse[/url], the Free Unix Spectrum Emulator[/url] has just been released. Highlights of t…
... /> [*]Much improved contended memory and floating bus emulation.
[*]Improved display timings ... -
Detecting a Kempton joystick...I've been playing with the idea in the games I'm currently developing so that once the Kempston joystick has been selected you can hold FIRE down to …
Do your port reads after a HALT to avoid reading the [URL="http://scratchpad.wikia.com/wiki/Floating_bus"]floating bus[/URL] with no Kempston attached. -
Detecting a Kempton joystick...I've been playing with the idea in the games I'm currently developing so that once the Kempston joystick has been selected you can hold FIRE down to …
[QUOTE=Woody;239126]Do your port reads after a HALT to avoid reading the [URL="http://scratchpad.wikia.com/wiki/Floating_bus"]floating bus[/URL] with no Kempston attached.[/QUOTE]
Thanks Woody. -
Detecting a Kempton joystick...I've been playing with the idea in the games I'm currently developing so that once the Kempston joystick has been selected you can hold FIRE down to …
... , sounds like you're seeing floating bus values there. Quoth the [url ... put anything on the data bus. Therefore, you'll read a ... mixture of 0xff (idle bus), and screen and ATTR data ... -
Detecting a Kempton joystick...I've been playing with the idea in the games I'm currently developing so that once the Kempston joystick has been selected you can hold FIRE down to …
... /> It's not actually a floating bus if the ULA is pulling ... but then considered that a floating bus would produce "random 0 to ... -
Detecting a Kempton joystick...I've been playing with the idea in the games I'm currently developing so that once the Kempston joystick has been selected you can hold FIRE down to …
... unless you're using the floating bus do do vsync). Matthew Smith ... -
Another fusetest runWould anyone with a real machine be prepared to try the latest version of [url=http://www.shadowmagic.org.uk/spectrum/fusetest.zip]fusetest[/url], my…
...
Contended IN... passed
Floating bus... passed
Contended memory... passed ...
Contended IN... passed
Floating bus... skipped (B=0x01)
Contended ... -
MB02+ software and system developmentsThe following text was (before last modification) first published here: [url]http://www.sintech-shop.com/forum/board.php?boardid=20[/url] As discuss…
... disable read 7FFD, register A=floating bus data
- set flag Z ... -
list of ZX games with raining effect(ula snow)If you know any ZX games with raining effect in screen, then add game name to list. I know about this games only: (tested on real ZX128+2 - grey) 4x…
... secondary effects related to the floating bus effect on Kempston joystick reading ... -
PDA and emulationWotcha folks. I've been running PalmZX on my Palm Treo for around 3 years now and like it immensely. What I am wondering is, is there a PDA/phone o…
... emulation of the Spectrum's 'floating bus'. Sounds like SpectrumAnywhere doesn't ... -
PDA and emulationWotcha folks. I've been running PalmZX on my Palm Treo for around 3 years now and like it immensely. What I am wondering is, is there a PDA/phone o…
... emulation of the Spectrum's 'floating bus'. Sounds like SpectrumAnywhere doesn't ... -
Group Order of Internal/External Kempston Turbo InterfacesI have contact Velesoft ([url]http://velesoft.speccy.cz/kmturbo-cz.htm[/url]) about the production of internal or external kempston turbo interfaces …
... fixed vector table adress (correct floating bus value):
===========================================================
K ... -MOUSE return to data bus correct 8bit low adress (#FF ... -
Blizzard's Rift in Spinanyone else having trouble playing blizzard's rift in spin, the game loads ok, you can select controls, select a system to visit but when you select …
... which is the totally different floating bus behaviour (which isn't present ... -
ANN: SpecEmu 2.7Go get it kids! [url]http://homepage.ntlworld.com/mark.woodmass/specemu.html[/url] :p
... from port 0x7FFD writes the floating bus value back to that port ... -
The Speccy game you try first with a new emulatorI'm excited about the possibility of getting Speccy games up and running on the Nintendo Wii, which led me to think about which game I'd try first...…
I always thought Manic Miner was the canonical test of an emulator.
If you want to probe the boundaries of emulator accuracy, Dark Star with its fancy border effects of Arkanoid which uses the floating bus behaviour are probably more rigorous. -
Quotes from Speccy GamesTry to find this one: "No Sax please, We are Egyptians!"
... game in question uses the "floating bus" for synchronisation with the display ... -
Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…
... .cgi?id=0004494]Sidewize[/url]: floating bus
[/list]
After that ... -
Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…
... /> Indeed, this is the "Floating bus" issue mentioned by Phillip.
floating bus" instead.
... prone to using this "floating bus" method of screen synchronisation ... do not have this floating bus behaviour, and therefore ... -
Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…
One very small addition to Digital Prawn's comprehensive explanation above is that the later releases of Arkanoid were modified so as not to use the floating bus. -
Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…
... as not to use the floating bus.[/QUOTE]
So the ... -
Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…
... (or did not) emulate the floating bus at the time.
floating bus code with a [b]halt ... precisely timed replacement for the floating bus code in an official retail ... -
Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…
... .cgi?id=0004494]Sidewize[/url]: floating bus
[/list]
After that ... -
I just learnt that Spectrum has 1kB of unused ROMWell, man learns through all his life. I have just discovered that Spectrum has over 1 kilobyte of unused ROM memory, from address 14446 to 15615. Al…
... pushing random values onto the floating bus -- or they don't bother ... -
Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
... bottom border by reading the floating bus and looking for a particular ... -
RUSSIAN SOFTWARE and real ZXRussian ZX games is writed on russian ZX clones and support hardware feature TURBO OFF ( for ZX clone ZS SCORPION ). Russian ZX clone ZS SCORPION use…
... / +2(grey), then data from floating bus is writed to paging port ... -
People holding back the emulation sceneAs mentioned once again in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=22690"]this thread[/URL], some people think Ramsoft willfully…
... the first version of the floating bus documentation that was released. We ... -
Batman crashes on MobileZXDear all, I'm one of the authors of MobileZX ([url]https://sourceforge.net/projects/mobilezx/[/url]) and find that Batman crashes within a few secon…
There's a few more games listed in the [URL="http://scratchpad.wikia.com/wiki/Floating_bus"]floating bus[/URL] section of the tech wiki that probably also fail then. -
TIMEX Sinclair 2068 => ZX Spectrum/Timex2048?Hello. I have opportunity to buy Timex Sinclair 2068. According to www sites dedicated to Timex machines, TS 2068 can handle only 7% (!) of Spe…
... 50hz, different T-states, no floating bus on port #FF). More than ... -
Data bus at interrupt timeIt is "well known" that some peripherals can put values other than 0xff on the data bus at interrupt time, thus meaning that IM2 is slightly more fid…
... 0xff on the data bus at interrupt time, thus ... with pull-up data bus via resistors 150 Ohm) ... fixed vector table adress (correct floating bus value):
===========================================
... K-MOUSE return to data bus correct 8bit low adress (# ... -
Games not working on Timex 2048Timex 2048 is a very good Spectrum 48k clone, over 90% of games work fine. But there are also not working games or working but not properly. Is there…
... the SCLD data bus from the z80 data bus with resistors as ... done instead with a standard bus transceiver chip. A consequence is ... TC2048 doesn't support a floating bus on any port (that I ...
