-
Floating bus on 128K models[b]Background:[/b] i need run code with interrupt enabled but i need use stack instruction to maximize performance in copy/shift/mirror routines. dur…
... /> questions are:
1) is floating bus present on all of 128 ... , 2A, 3+ machines ?
2) from documentation i understand that ... -
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... bit with memory contention and floating bus stuff in ZXDS and there ... seem to appear on the floating bus.
To be ... ?). However, as far as the floating bus is concerned, the very same ... .html"]tech doc[/URL] about floating bus.
Ramsoft's [URL=" ... -
Pentagon floating bus timingI wanted to take a little break from working on the ZXDS UI yesterday, so I added support for Pentagon timing instead, so I can finally enjoy the lik…
... and exact info about the floating bus behavior and timing. An explanation ... -
Emulating a +2A with floating bus modBefore I start hacking Fuse's source... Does any existing emulator have an option to behave as a +2A with the [URL="http://www.secarica.ro/html/plus…
Before I start hacking Fuse's source...
Does any existing emulator have an option to behave as a +2A with the [URL="http://www.secarica.ro/html/plus3_hardware.html#inFFport"]floating bus modification[/URL]?
-Stephen -
Spectrum +2A floating bus portHi As I discovered in the past, Spectrum +2A (and probably +3) do have floating bus port. But it is not shown on all unused ports, only on some po…
... (and probably +3) do have floating bus port. But it is not ... that +2A does not have floating bus port, but it's incorrect ... -
(Belated) ANNOUNCE: Fuse 0.7.0 and libspectrum 0.2.2 releasedThe Fuse team is pleased to announce that release of Fuse 0.7.0, the associated utilities and version 0.2.2 of the Spectrum emulator support library,…
... associated utilities and version 0.2.2 of the Spectrum emulator support ... /> + Much improved contended memory and floating bus emulation.
+ Improved display timings ... -
ANN: SpecEmu 2.3 - Minor UpdateHere's a minor update to the SpecEmu emulator - the emulator with an incredibly small filesize for a Win32 application, and backed up with an incredi…
... to boot :)
Version 2.3 is available at:
- Improved floating bus emulation.
- A 1 cycle ... -
New stable version ZEsarUX-4.2Hi everyone! I have uploaded a new stable version of ZEsarUX emulator, version 4.2. You can download it from: https://sourceforge.net/projec…
... of ZEsarUX emulator, version 4.2.
You can download ... symbol (*) is shown
Improved floating bus value
Updated Z88 OZ ... V4.6.2
Updated ZXUno Flash and ... -
Inkspector 2.0 (final) releasedI’ve just released Inkspector 2.0 final (there was a preview version released before Xmas). It’s a new emulator for Windows with all-new code (non ca…
I’ve just released Inkspector 2.0 final (there was a ... behaviours including the +2A/+3 floating bus) it has a built-in ... -
ANN: Spectaculator 2.5 available for downloadHi. I've just released a new version of Spectaculator, available from [url="http://www.spectaculator.com/"]http://www.spectaculator.com/[/url]. Hopef…
... />
Emulation
- Floating bus emulation as per Ramsoft technical ... -
A few questions regarding EmuZwinA few questions regarding EmuzWin 1. I have been trying to write a program to generate multicolour effects on the Spectrum,ie more than 2 attributes…
... the Spectrum,ie more than 2 attributes per character square. Although ... that affects timing.
2. When assembling using the EmuZwin ... works ok.
4. Floating Bus implementation. I use this to ... -
A few questions regarding EmuZwinI had posted this in the development forum and then remembered there was an emulators forum, so apologies for the repetition. 1. I have been trying …
... the Spectrum,ie more than 2 attributes per character square. Although ... that affects timing.
2. When assembling using the EmuZwin ... works ok.
4. Floating Bus implementation. I use this to ... -
Problems with games on +2AHi! I have a +2A now and have problems running some games on it. I tought the resistor fix (to give it some kind of "floating bus" as the original 4…
... give it some kind of "floating bus" as the original 48k and ... the roms from the grey +2 (both ROM sockets changed) would ... -
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…
... = on ZX128/+2 write to paging port data from floating bus (can't ... = on ZX128/+2 write to paging port data from floating bus (can't ... be use)
ZX128/+2 use paging ... -
IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…
... Z80 can only read FFh (floating bus).
Convinced myself ... different Spectrum models (issue 2, issue 3 with a ... /> Main proc
ld a,-2
call CHAN_OPEN
< ... -
Tricks with IN 31It's generally considered unwise to use a Kempston joystick's fire button to start a game, because the floating bus effect can make arbitrary data ap…
... start a game, because the floating bus effect can make arbitrary data ... be 0?
* bits 3-2 (up/down) will never both ... -
ZX Spectrum 48K clone and test resultsHi! This is my first post, so, first of all, I'd like to say hello to the whole community! I am Alessandro Dorigatti from Italy and I'm developing …
... aligned with the sea, Arkanoid (floating bus version) works fine.
By the way there are 2 issues:
1) The ... bar, instead, is WHITE.
2) There is a LOW continuous ... -
Enable 128kB paging in emulatorFrom Zx Spectrum documentation ([url]http://www.worldofspectrum.org/faq/reference/128kreference.htm[/url]) [CODE][SIZE="1"]When memory is being pag…
... 0x7ffd produces no special results: floating bus values will be returned as ... follows:
Bits 0-2: RAM page (0-7) to ... -
****ing Awesome Spectrum Engine (FASE)This is a new engine (sprites, tiles, map) for all ZX Spectrum machines. The engine set ups a runtime enviroment that leave between 24K and 30K byt…
... $8000 address. Basically there are 2 routines to call: INIT to ... diferent implementation for each machine (floating bus in 48K, shadow screen in ... -
[NEW] Retro Virtual Machine v1.0.0 for OSX released!!!!Here it is! Retro Virtual Machine v1.0.0 RELEASED!!!! Many thanks first to Patrik Rak for the PZX format and for their Z80 tests without which RVM…
... / 128k / +2) (Not 100% accurate).
Emulation of the ‘floating bus’
Emulation ... tracks double side (3’’ 1/2) supported.
Crete new disk ... -
New emulator - Spectramine v.1.0b releasedI post the first release of my Spectramine emulator, with minimal functionality, for public testing of emulation quality and compatibility with games…
... /> 1) ease of use;
2) emulation accuracy - z80, delays, ports ... to him for that!). Also, floating bus of +2A/+3 is emulated ... -
Programs with strict timing requirements.Hi, all, I am a bit stuck about the timings of my SpecIde emulator. (https://github.com/MartianGirl/SpecIde) The thing is, I think that the tim…
... , either in +2A or in +2.
I've already ... , the programs from the +2A floating bus thread, shock, overscan, mda, hercules ... -
SpecIde updated!Hi, all! In these past months I've been brushing up a bit my emulator, SpecIde, a.k.a. the least efficient emulator in the world. At this momen…
... all the extras. (Issue 2/3, contended memory, floating bus, snow effect...)
- Pixel-perfect emulation of Spectrum 128K/+2. (Also ... with contended memory, floating bus, snow effect...)
ZXDS 2.0.0Hello, after few months of intense work, I am finally ready to announce [url="http://zxds.raxoft.cz"]new ZXDS release[/url] for Nintendo 3DS. The …
... WPA instead of WEP, or floating bus emulation for +2A/+3 machines ...Shoot-em-up gameHi everyone, For just over a month I have been working on a shoot-em-up game along the lines of Sidewize / Zynaps, ie. right to left scroller. It is…
... 'd, but I use the floating bus to do it. I guess ... recently that the floating bus can't be exploited on +2, +3, so ...Shoot-em-up gameHi everyone, For just over a month I have been working on a shoot-em-up game along the lines of Sidewize / Zynaps, ie. right to left scroller. It is…
... tried that snap in 128k/+2 mode and it's fine ... think you meant that the floating bus is not available in +2a ...fzx32 on GP32 progressing nicelyJust to let you know that Rlyeh is working hard on his ZX Spectrum emulator fZX32 for the GP32 and should be released in the near future. Its based…
... , ZX 48, ZX 128, ZX +2, ZX +2A and ZX +3 ... kempston, cursor, fuller, sinclair1, sinclair 2 joystick emulation.
- Fuller audio ... emulation (multicolor effects),
- Preliminary floating bus emulation,
- Virtual Keyboard suppoprt ...How to detect 48k modeHow can you detect if a 128k machine is in 48k mode (from an emulation point of view, not via BASIC or machine code)? Checking the current rom? But …
... and it returns the floating bus.
[quote]
2) When I try ...Pocket Clive - 2 QuestionsHello, I've just started using Pocket Clive on my iPaq pocket PC, excellent emulator BTW. 1. I have just wrote a small BASIC program to randomly pi…
... looking again at problem (2)of the original post, ... the routine probing the 'floating bus' is checking for the ... wrong by removing the 'floating bus' IN instructions, as described ... issue, so presumably the 'floating bus' synchronisation code was removed ...Pocket Clive - 2 QuestionsHello, I've just started using Pocket Clive on my iPaq pocket PC, excellent emulator BTW. 1. I have just wrote a small BASIC program to randomly pi…
... WOS archive
2. Configure Standard 48K spectrum in ...
4. Apply the following 2 pokes,
POKE 33234,118 ... The pokes simply bypass the "floating bus probe", and install the HALT ... for putting me onto the "floating bus" issue - I would never ...
