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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…
... a bit with memory contention and floating bus stuff in ZXDS and there is one ... and still display them in time?). However, as far as the floating bus ... this once and for all, as well as correct any timing information ... -
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…
... I added support for Pentagon timing instead, so I can finally ... someone has reliable and exact info about the floating bus behavior and timing. An explanation ... the bytes without any memory contention would be nice, too.
Speccy emulation with R4 - DSpec, ZXDS & SpeccyDS...Finally got an R4 card up & running, and I've installed DSpec, ZXDS & SpeccyDS onto it, but I've a couple of questions I'm hoping somebody can help w…
... it nevertheless. The features include contention and floating bus emulation, accurate screen sampling, better ... speaker synthesis and, last but not least, LCD ... . Just check out any scroller and you'll know the difference ...Speccy emulation with R4 - DSpec, ZXDS & SpeccyDS...Finally got an R4 card up & running, and I've installed DSpec, ZXDS & SpeccyDS onto it, but I've a couple of questions I'm hoping somebody can help w…
... it nevertheless. The features include contention and floating bus emulation, accurate screen sampling, better ... speaker synthesis and, last but not least, LCD ... . Just check out any scroller and you'll know the difference ...Speccy emulation with R4 - DSpec, ZXDS & SpeccyDS...Finally got an R4 card up & running, and I've installed DSpec, ZXDS & SpeccyDS onto it, but I've a couple of questions I'm hoping somebody can help w…
... nevertheless. The features include contention and floating bus emulation, accurate screen sampling ... , better speaker synthesis and, last but not least ... out any scroller and you'll know the ... br />
Works great, and the multicolour's fine, tried ...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…
... with stack manipulation and slow, stack-safe and predict if the routine ... /> questions are:
1) is floating bus present on all of 128 ... />
in a, ($ff)
and c
ld c, a ...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…
... past, Spectrum +2A (and probably +3) do have floating bus port. But it ... that +2A does not have floating bus port, but it's incorrect ...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…
... /> 1. The wiki documents the floating bus timing and how contention affects instructions.
2 ... , if CSS FAQ contention timing is also correct and contention starts at 14335, then ... know the point of the contention timing is to stop the CPU ...(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,…
... + Scorpion ZS 256, Spectrum +3e and Spectrum SE support.
+ Interface ... br /> + Much improved contended memory and floating bus emulation.
+ Improved display timings ... /> + Support for ZXATASP, ZXCF and Interface II.
+ Support for ...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]?
-StephenEmuzWinHi folks I'm using EmuZWin and it's started running games super quick (not all games but some) I've tried messing around with speed settings but eve…
... any emulator that claims 'exact timing and floating bus behavior':
[url]http ...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…
... next release. Joystick support and the keystick (PC cursors used ... /> Added ULA Snow effect, and Floating bus based on RamSoft's technical ... Added All joystick types keystick and PC Joystick.
Added ... /> Now saves window size and position.
Added "Tape ...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…
... shortly at the Fuse homepage and WoS.
and Spectrum SE support.
+ ... /> + Much improved contended memory and floating bus emulation.
+ Improved display ... are the stunning HQ2x and HQ3x graphics filters ( ...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…
... Emulator[/url] to SourceForge and WoS, where they should ... />
* Fix IN timings and floating bus behaviour.
* Fix widget UI ... of the Fuse utilities and libspectrum. Please report any ... network to discuss anything and everything related to Fuse. ...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…
... TS2068 support.
[*] Interface I and microdrive emulation.
[*] Kempston mouse ... thumbnail icon images with snapshots and screenshots.
[/list]
[*] Fix IN timings and floating bus behaviour.
[*] Fix crash if ...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. …
... rebuilding an Opus Discovery unit and everything looked good. A solid ... supply to the edge connector and the Spectrum powered up fine ... OK, as is the NMI and floating bus. The ROM checksum is also ... good. The Spectrum will load and run games. In fact everything ...SPIN & port #FFHow to solve a problem with port #FF on SPIN? This prevent me from creating correct RZX-file with Short Circuit, part 1.
What problem are you having?
Port $FF is an unattached port - it will reliably return $FF on a read in +2a/+3 hardware, and floating bus results for any prior models.
D.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…
... Scorpion ZS 256, Spectrum +3e and Spectrum SE support.
[*]Interface ... /> [*]Much improved contended memory and floating bus emulation.
[*]Improved display ... [*]DivIDE support.
[*]Interface I and microdrive emulation.
[*]TS2068 support ...New 48K Spectum emulator on the Windows StoreHi, I've just uploaded a new "Free" Spectrum 48K emulator to the Windows Store, see: http://apps.microsoft.com/windows/en-gb/app/specwin48/4d54…
... store which fixes contended memory and floating bus (all tests are passing). Great ... Manic Miner by tilting left and right and flicking to jump. Different ...Send in the ClonesPlease name all the Spectrum clones out there ( I would say I need it back on my desk in 5 minutes , but I will be a bit more generous in this case!…
... />
[quote="harriusherbartio;940350"]And it is listed here:-
and "chunky" modes, up to ... to having no memory contention and different video timing, games which do ... I'll make the hardware and FPGA code open so ...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, …
... ULA timing 100% right. We know when the contention pattern ... screen bytes. Obviously the floating bus can't be used ... paging the shadow screen in and out.
... when the black bar appears and its length.
- ... from the same archive and report the first T ...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…
... Spectrum clone now shows full timing compatibility
with the ... reproduced,
along with contended and uncontended floating bus reads.
... that will test the _memory_ contention
(or anything else ... please drop me a line and/or
send a ...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 ... only works on old Speccies and would be confused by certain ... whether the memory is in contention?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 …
... tests in FuseTests, IR-Contention) and others show some glitches ( ... 512K), a 14MHz oscillator, and other useful hardware (you can ... is OK, IOcontention OK, contention OK, Float48K OK, FloatSpy ... with the sea, Arkanoid (floating bus version) works fine.
...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…
... the ZX Spectrum Emulator cartridge and have downloaded a few tests ... The screen display is centred and not to the left like ... floating bus. I'm wondering how to test the contended I/O timing ... coupling the multiplexed address buses, and U17 74LS245 for coupling the ...Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…
... contention of the 5C112E and the same sync pulse and colour burst timing ... the Z80 multiplexed address bus and data bus onto the SCLD/VRAM ... this for the cartridge port and the Bus Expansion unit (BE# ... as the cartridge memory or bus expansion device. For reads ...Which Emulator do you use the most? and whyI currently use ZX32, it's free, which is great but it's not as fast as I'd like. Please everybody, tell me your fave emulator and why. I'm quite …
... the little details like the floating bus and memory contention. However most software will ... hardware that rely on precise timing to trick the hardware into ...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…
... output
14346 Memory contention starts, 11th and 12th pixels output to ... -14343 experience memory contention.
The memory contention timing is as it ... the floating bus (because that T-state is contended by the memory contention ...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…
... cycle of a finishing instruction, and then responds immediately. Thus it ... />
[QUOTE]The timing of the IO contention however is different. Again ... the floating bus (because that T-state is contended by the memory contention ...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…
... IO instructions, and the assumption was that IO and Mem contention were the ... by watching the floating bus, which means the IO contention is as I ... byte only. Also, the memory contention timing must span the 4 video ...
