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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…
... recent floating bus test 2, there were 2 version in the folder. Version 2:-
Version 2.1 at first load up ... -
Why not more interest in C?Just curious. Not trying to provoke anything other than a discussion here. It would seem (to me) that it would be better for "Z80 beginners" to wr…
... not a priority.
2. Decompiled C does not help ... will not tell you about floating bus etc. You still need the ... -
zesarux emulator > pc keyboard mappingSorry that this is so trivial but I cannot find the "=" key which is fairly important
... slices and and the Spectrums floating bus.
The program by ... emulator.
However for myself, 2 people in Sheffield and a ... emulation is deficient.
2) The UI is an unmitigated ... -
The latest build of Specemu?The latest version of Specemu (a fantastic emulator, BTW) I have is SpecEmu-3.1.b150912.zip, which is a year old now, but knowing Woody he's probably…
... .pub/woodywoodster/specemu/specemu-3.2.b311221.zip[/url]
From Changelog:
[quote]v3.2 build 31/12/21
Didn't fix the +3 floating bus for this release! (I knew ... -
New Version of MAME Emulator out with enhancements on Spectrum-EmulationNew Version 0.216 of MAME Emulator out with enhancements on Spectrum Emulation: [url="https://www.mamedev.org/?p=476"]https://mamedev.org/?p=476[/…
... .co.uk]
Gremlins 2: La Nueva Generacion [worldofspectrum.org ... - 7913: spectrum.cpp: Restored floating bus read functionality; bus/spectrum: Added two devices ... spectrumcomputing.co.uk]
Gremlins 2: La Nueva Generacion [worldofspectrum.org ... -
SPIN Public Beta 0.1b Available for downloadHi all, back again, and as just recently announced on CSS, SPIN has been updated. Here's the post to CSS (or the relevant parts): It's been a bu…
... /> Added ULA Snow effect, and Floating bus based on RamSoft's technical ... -
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…
... /> Hardware quirks such as the 'floating bus' effect will also be absent ... -
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…
... /> + Much improved contended memory and floating bus emulation.
+ Improved display timings ... -
Hardware GuideI was thinking this might make a good sticky... [b]Service Manuals[/b] [URL="ftp://ftp.worldofspectrum.org/pub/sinclair/technical-docs/ZXSpectrum48K…
... /floatingbus.html"]The Floating Bus Explained[/URL] -Info about the Floating Bus and the ... -
Fuse 0.8.0.1 releasedI have just uploaded version 0.8.0.1 of the [url=http://fuse-emulator.sourceforge.net/]Free Unix Spectrum Emulator[/url] to SourceForge and WoS, wher…
... />
* Fix IN timings and floating bus behaviour.
* Fix widget UI ... -
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…
... ]
[*] Fix IN timings and floating bus behaviour.
[*] Fix crash if ... -
Harlequin ZX Spectrum Clone now 100% compatible!Hi all! The Harlequin ZX Spectrum clone now shows full timing compatibility with the ZX Spectrum! 8-) Both the ULA IO and memory contentions are fa…
... /> along with contended and uncontended floating bus reads.
Full details ... -
Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... memory not emulated yet
[*]Floating bus not emulated yet
[*]Quick ... -
JSpeccy: New emulatorHi there, Jos? Luis S?nchez (zx81 at ono dot com) has developed a new ZX Spectrum emulator in Java, with a very accurate Z80 emulation. The message …
... emulation (Uridium, Overscan Demo)
- Floating bus emulation (Arkanoid, Sidewize)
- Speaker ... -
IM2 Loading on +3EHi there Speccy Guru's, As some of you know, I've spent a while building the ultimate image for +3e, it's currently at 6000+games and demos and i've…
... 's not due to the floating bus, maybe the real hardware changes ... -
Contention detectionJust a thought, based on discussion elsewhere... Is there any way of telling if reads/writes are being contended around the time that they happen? L…
... .
There's the floating bus method, for telling whether the ... -
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…
... plus software that requires the floating bus. 128 software that requires the ... -
Shadow ROM partial decoding not implemented in emulatorsOr at least, not implemented in Spectaculator, and it seems that not in Fuse too. [URL="http://www.speccy.org/foro/viewtopic.php?f=8&t=408&start=53"…
... from the main ROM, not floating bus (ULA/FFh), of a mirror ... -
Frank N Stein Re-booted (missing v. number?)[URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0026834&loadpics=3"]Frank N Stein Re-Booted[/URL] As per the WoS [URL="http://www.worldofspec…
... than one version is floating about.
2) Also perhaps get ... -
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 …
... with 48K display timings
Floating bus and contention emulation model (not ... with digital TVs)
Expansion bus connector
I ... to load
Implement a floating point co-processor usable as ... -
maximum addressable RAM for a Z80 using bank switching?What is the maximum addressable RAM for a Z80 using bank switching? The Enterprise64 home computer could address up to 4MB, is this the limit for a …
... 4 megabytes (MB). The highest 2 address lines from the Z80 ... of the 22-bit address bus, while the lowest 14 bits ... directly from the Z80 address bus.[2] Effectively, the 64 kB ... ROM. The next four pages (2 to 5) are reserved for ... connected to the expansion bus. -
Timing of Timex Computer 2068Is the timing of the Timex Computer 2068 fully documented yet? I have one here with the ZX Spectrum Emulator cartridge and have downloaded a few test…
... on the Timex not a floating bus. I'm wondering how to ... only part of the SCLD bus is coupled to the Z80 ... bus via resistors. I have seen ... -
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…
... to switch on the scope. Floating bus seems to behave okay. DMM ... 's nothing else on the bus. Logic levels on the Z80 ... -
Using even ports for input?I've been looking for unused ports to use with my clashbasher interface. I understand that the spectrum only considers A0 when decoding its input p…
... high byte of the address bus is used to select ... be any contention on the bus because that's the ... on a spectrum with a floating bus it should be fine shouldn ... through contention on the data bus? Are there othere models of ... having done away with the floating bus. -
Port $28FF. Why 28?Testing floating bus behaviour for ZXUno, I've found that both Cobra and Arkanoid use this specific 16-bit port: $28FF. What is so special about putt…
Testing floating bus behaviour for ZXUno, I've found that both Cobra and Arkanoid use this specific 16-bit port: $28FF. What is so special about putting the value $28 in A15-A8 during a read to $FF?
Thank you very much in advance! :) -
New test for finding missing +2A/+3 ULA timing detailsHello, having added the +2A/+3 emulation recently, I want to make sure I got the ULA timing 100% right. We know when the contention pattern starts, …
... the screen bytes. Obviously the floating bus can't be used to ... -
Smokin... more 48k woesHi, it looks like I've converted another Spectrum 48K+ into a smoke machine. I'd been rebuilding an Opus Discovery unit and everything looked good. …
... , as is the NMI and floating bus. The ROM checksum is also ... -
Interrupts, 16k Spectrums and snowI'm writing something for the 16k Spectrum and I want to use interrupts. The avilable documentation doesn't seem clear enough for me to figure out ho…
... case someone suggests using the floating bus - that's what I'm ... -
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…
... the mystery of the elusive floating bus on these machines, and no ... if I can fetch a bus value from it. Now, I ... this anyway), and skip ULA/bus polling on a +2A/3 ... -
Compatibility of Spectrum 128K and +3I wondered if the are any compatibilty problems between software running on the 128K and the +3. e.g. if I would connect a disk drive to the 128K wou…
... to define the lack of floating bus as an extension, in which ...
