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What model next ?Hi All I already have two 48k rubber kyed 48k Spectrums and a Grey +2 What to get next. ZX Spectrum + ZX Spectrum 128 Toast Rack ZX Spectrum +3
[QUOTE=Woody;496719]There are a (small?) ... obviously only tested on the +3 and suffer as a result ... +2A mode also (ram 0-3 is fast and ram 4 ... (ZX ignore reading and return floating bus). Ports acceleration can be also ... used as on ZX128+2A/+3 (A15=0,A14=1,A1 ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... + 0x94fc
Machine type: +3
BIT n,(IX ... /> Contended IN? failed (0x03)
Floating bus? failed (0x00)
Contended memory ... code]
And running Woody's Z80 test suite, the ... /> CB (00-FF) 5+3 ROM : 4B39 failed, expected 4D19 ... -
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…
[quote="Woody;921301"]I've added preliminary ... and the Amstrad floating bus pattern:
[code]
;Floating bus port detection ... /> cp (hl)
jr z,$-3
halt
halt
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…
... that the +2A/+3 machines have a floating bus, and figured out ... [/i], etc.)
Mark (Woody) is almost done implementing this ... Spectrum game to use the floating bus on [i]all[/i] ... br />
The floating bus on the +2A/+3 behaves differently from the ...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…
... he’d nailed my Woody’s Special test in ... [quote]
48K 128K +3 ULA bus
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14338 14364 ... all cases. The +2A/+3 floating bytes will appear on all ... contention on your page about floating bus is incorrect - it's ...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…
... [code]
48K 128K +3 ULA bus
-----------------------------
14338 14364 ... relative to ULA INTREQ. Woody, would you mind to ... doubt you could really read floating bus from even ports.
... the pattern of +2A/+3 models is 7 contended ...ANNOUNCE: Fuse for Mac OS X 0.7.0Following the release of Fuse 0.7.0 is the unsurprising release of Fuse for Mac OS X 0.7.0 which should be available for download shortly at the Fuse…
... supports Max OS X 10.3, if you are running an ... /> + Much improved contended memory and floating bus emulation.
+ Improved display timings ...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…
... is a bug.
3. Occasionally the assembler seems to ... 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 …
... is a bug.
3. Occasionally the assembler seems to ... works ok.
4. Floating Bus implementation. I use this to ...Hardware GuideI was thinking this might make a good sticky... [b]Service Manuals[/b] [URL="ftp://ftp.worldofspectrum.org/pub/sinclair/technical-docs/ZXSpectrum48K…
... .netfirms.com/plus3.html"]Spectrum +3 Machines, Software and Spares[/URL ... ] -many things on the +3 by John King
[URL ... /floatingbus.html"]The Floating Bus Explained[/URL] -Info about the Floating Bus and the ...Fuse for Mac OS X 0.8.0.1A bug fix version of Fuse for Mac OS X has been released soon or already here at WoS and at the dedicated sourceforge project: [url]http://sourcefor…
... -0.3.0.1
[list]
[*] Fix IN timings and floating bus ...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…
... and CPU read data from floating bus ( value #FF ). Software TURBO switching ... SCORPION is on ZX+2A/+3 models ifnored (without effect) and ... always at original ZX speed (3.5 MHz)
... ZX128 models(ZX128/+2/+2A/+3/russian clones):
[IMG]http ...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…
... -A15 during an I/O bus cycle.
What ... Z80 wants to initiate a bus cycle that might affect ... Z80 can only read FFh (floating bus).
Convinced myself ... only contends the I/O bus cycle if A8-A15 ... models (issue 2, issue 3 with a 5C112E-2 ULA ...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 ... all be 0?
* bits 3-2 (up/down) will never ...Emulating the 128KeIt occurs to me that I wasn't frequenting WoSf when I created the 128Ke standard, which means some people haven't heard of it. Here it is: [url]http…
... works on a 48K issue 3 machine and anything that works ... of the 128s (excluding the +3). Everything just works. If you ... . This will even work for +3 and Pentagon titles that don ... plus software that requires the floating bus. 128 software that requires the ...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 …
... it mounts a real Z80, 3 SRAM chips (512K, 128K, 512K ... aligned with the sea, Arkanoid (floating bus version) works fine.
A new ZX spectrum cloneOver the past 12 months i have been developing a new spectrum clone as a hobby project to waste my spare time on. It is still not fully complete yet …
... is as follows:
3.5MHz Z80 CPU with 7MHz ... with 48K display timings
Floating bus and contention emulation model (not ... with digital TVs)
Expansion bus connector
... load
Implement a floating point co-processor usable as ...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 ... at 0xc000.
Bit 3: Select normal (0) or shadow ...Tricky ZX RepairHello guys, This time I put my hands on a very nice Issue 3 16K, upgraded to 48K. To bertter explain "nice", it is absolutely mint, not a scratch on…
... on a very nice Issue 3 16K, upgraded to 48K. To ... , halting with the first 1/3 of the screen still with ... to switch on the scope. Floating bus seems to behave okay. DMM ... 's nothing else on the bus. Logic levels on the Z80 ...[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…
... accurate).
Emulation of the ‘floating bus’
Emulation of the contended ... (I think).
40 tracks (3’’) and 80 tracks double side ... (3’’ 1/2) supported.
... view in the ZX Spectrum +3.
Snapshot’s management view ...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…
... 3ffd and crashes running +2A/+3 ROMS with real video enabled ... symbol (*) is shown
Improved floating bus value
Updated Z88 OZ ...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…
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…
... extras. (Issue 2/3, contended memory, floating bus, snow effect...)
floating bus, snow effect...)
... 3. (This is new; I've implemented the contended memory, floating bus ... -so-good FDC765 and +3 disk drive emulation. Read ...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 …
... instead of WEP, or floating bus emulation for +2A/+3 machines.
Detecting +3 or +2AIs it possible to detect whether your BASIC program is running on a +2A/+3 or a proper 128?
... 255 used for on the +3?
[/quote]
Testing ... port. The +2A/+3 don't have a floating bus effect so you ...bug in spectaculator? Hi Jon, While testing the AMX mouse emulation in Spectaculator I noticed that the mouse buttons don't work. My program reads port $df to detect mo…
... only puts bits on the bus when you press a button ... of screen and attribute bytes (floating bus effect).
[quote]
3-buttoned affair ;)
The ...One Man And His DroidPosted a few days back about control probs with a few games, after a bit of getting used to what to look for controls-wise and all the .txt files und…
... 2004-04-23 11:18, Woody wrote:
So you either ... keyboard, an emulator that gives floating bus behaviour on port 31.
bus floating over port 31. It will ...Emulation accuracy and how it affects softwareHi folks. I was thinking of bodging together a rudimentary Spectrum emulator myself, not as a competitor to the other emulators, but as an integrate…
... it doesn't have the floating bus. I have tried > 400 ... /> Woody already mentioned Arkanoid, which doesn't work because of floating bus + port ...Another Z80 processor questionOK, this time this isn't clearly covered in the FAQ, as far as I can see.... Suppose we have the CB instruction "SET b,r" (b=bit, r=register (differ…
... 2004-07-26 19:07, Woody wrote:
GOC, are you ... entries? :)
[/quote]
@Woody:
Yes, I am ... interested in ultra-precise stuff (floating bus, contended memory), but I want ...Games not working on the plus 2a/plus3Can anyone please tell me the name of any games that would not work with the plus 2a/plus 3 even in 48k mode? Games that were simply not compatable …
There was a version of Cobra on a Plus 3 compilation disk: The Magnificent Seven, which must use some alternative to the floating bus.
Derek
