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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…
... read up on the "Floating Bus" info and with the aid of the ... locations
33213, 33221 and 33229
The code ... sprite drawing routines with the timing of the ULA's screen ... -
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…
... part of the screen, and hence is safely out of ... the game timing is made wrong by removing the 'floating bus' IN ... effect is greatly reduced, and the game becomes playable under ... to remove 'floating bus' code from affected games, and replace with equivalent ... -
Spectrum Game CompatibilityHi, At the moment I have a spectrum 48k. I am planning to get a 128k +2, but I have a problem. Will my 48k games work on 128k +2? Because some of the…
... ?[/QUOTE]
The +2a and +3 had severe incompatibility issues ... re-wired the ULA and removed the floating bus effect. Although this was ... relied on it (usually for timing purposes - you could synch to ... -
Spectrum Game CompatibilityHi, At the moment I have a spectrum 48k. I am planning to get a 128k +2, but I have a problem. Will my 48k games work on 128k +2? Because some of the…
... re-wired the ULA and removed the floating bus effect. Although this was ... relied on it (usually for timing purposes - you could synch to ... high score table in Paperboy and the countdown in Starion.Both ... -
Spectrum Game CompatibilityHi, At the moment I have a spectrum 48k. I am planning to get a 128k +2, but I have a problem. Will my 48k games work on 128k +2? Because some of the…
[QUOTE=Dunny]The +2a and +3 had severe incompatibility ... re-wired the ULA and removed the floating bus effect. Although this was ... relied on it (usually for timing purposes - you could synch to ... mentioning about the +2 (grey) and +2a (black), is there ... -
RealXThis may be a dumb question but will RealX ever get released?
... with a logic states analyser and a CPLD circuit developed ... for the purpose, and the numbers are different from ... both ours and the FAQ's. We' ... offsets (first contention, electron beam offset, snow effect, floating bus) using more ... -
RealXThis may be a dumb question but will RealX ever get released?
... he made the tests, and the "snow contention" is definitely present in ... as saying that no contention is applied during snow ... in SPIN. Our snow contention is accurate based on our ... the first contention cycle, the snow mechanism and all our floating bus tests ... -
RealXThis may be a dumb question but will RealX ever get released?
... he made the tests, and the "snow contention" is definitely present in ... as saying that no contention is applied during snow ... do you mean by "snow contention".
[QUOTE]
... the first contention cycle, the snow mechanism and all our floating bus tests ... -
Emulator Comparison ChartHi. In a similar vein to [URL=http://www.ppest.org/zx/zxse.php]Piters[/URL] comparison of various ZX emulators, I've been looking at adding some deta…
... trying to test. For memory contention and display timings, Shock Megademo ... 48K, 128K and +2A/+3 mode).
For floating bus, Cobra ... is a bit harder, and Sidewize perhaps even harder than ... tests/]internal Z80 tests[/url] and [url=http://fuse-emulator. ... -
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…
... time:
a) 1T state timing difference (original thread).[/QUOTE]
bus at "x-1" tstates. This ... an IO instruction that experience contention, and when that is.[/QUOTE]
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…
... the research done before adding contention, floating bus and accurate screen sampling to ZXDS ... to do. Two evening sessions and now I can enjoy Shock ... and Echology on this little 66MHz ...Arkanoid and +2A, problems??Is there any kind of incompatibility with Arkanoid in a +2A? I load the game but when it's time to play, the stick doesn't move and nothing happens, …
[QUOTE=Ivanzx;223840]And If I play the ... +3 also lacks the original "floating bus" behaviour found on the original ... written around this 'feature', and although I did mention about ... usually result in the timing getting screwed up, and flickering graphics, making ...Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …
... Contended IN... failed (0xfd)
Floating bus... skipped (B=0x01)
Contended ... (0x01)
High port contention 1... passed
High ... hangs on 'High port contention 2' but is otherwise ... mode 'High port contention 2' passes (and is otherwise the same ...Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …
... Fusetest on my real 128k and it's produced some< ... Floating Bus failed: (0xff)
Contended memory: failed (0x02)
High port contention ... : passed
High port contention 2: failed ( ... up for 30 mins and the results are still ...Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …
... +2's with the poke and all gave as previous result ... /> Floating bus... failed (0xff)
Contended memory... failed (0x02)
High port contention ... 1... passed
High port contention 2... failed (0x03 ...Quick testCould I ask anyone with a real 128K or +2 to run the latest [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]Fuse test suite[/url] on it and …
and the +2A's without the ... /> Floating bus... skipped (B=0x01)
Contended memory... passed
High port contention ... 1... passed
High port contention 2... passedQuick test (2)Could I ask any 128 / +2 / +2A / +3 owners to test the new version of [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]fusetest[/url] on thei…
... your software with the second and it gives me similar data ... /> floating bus...skipped (b=0x01)
contened memory...failer (0x01)
HP contention ... 1...passed
HP contention 2...failed (0xff ...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…
... no floating bus behavior per se.
Anyway, getting the timing and pattern ... , so we can get the timing of screen sampling right, in ...Benchmark timeWell, the BASIC benchmark posted in Creative Computing back in the 80s came up as a topic on the AtariAge forums. The article is available online an…
... stating each machine's floating point representation in a ... may also suffer from some bus contention caused by video refresh ... on performance. The CPC's contention model has more impact -- ... the speed of squaring, sqrt and floating point multiply/divide, as ...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…
... br />
Tried cold and then after 30 minutes.
Floating bus... passed
Contended memory... passed
High port contention 1 ... then tried another +2A and the program kept crashing. For ... 'F', another 'Frame length' and then froze. Another time I ...ANN: SpecEmu 2.7Go get it kids! [url]http://homepage.ntlworld.com/mark.woodmass/specemu.html[/url] :p
... enabled when I >=0xC000 and a contended bank pages in ... from port 0x7FFD writes the floating bus value back to that port ... few changes here and there in Z80 flags and contention
- Makes [URL ...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…
... TS (it's too big) and it fits only to TC2068 ... but you'll still have timing and other hardware issues
> ... 50hz, different T-states, no floating bus on port #FF). More than ... RAM in the EX and DOCK banks and
>sticking the ...Which is the most technically accurate Spectrum Emulator?Ok, which is the most technically accurate Spectrum Emulator? Please don't just vote but give reasons why.
... tests, Woodys Z80 Test Suite and Philip's Fusetest, here' ... br /> Floating bus... passed
Contended memory... passed
High port contention 1 ... some sort of league table and it provides some very ... the screen, tape loading and sound far better than Spud ...Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…
... Spectrum lacks a detailed and standarized system specification to adhere ... machine to its limits and use tricks much dependent ... (Z80 undocumented opcodes, memory contention, floating bus, fixed number of T-states ... devise a Spectrum clone and don't take into ...Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…
... myself.
I had (and still have) the tech ... with a keyboard and a TV/monitor and they couldn' ... tricks they threw at it (floating bus, contention, whatever), then, to me, ... s perhaps a TS2068, and if it's a combination ... call it a Spectrum, and I guess no one ...which one bit of hardware would people want re-made?I'm just curious in the sense of I see interface 1's go for a fair bit on ebay and also multiface units etc.. so whats the one thing that you don't …
... possible owing to I/O and timing differences between the machines. Sinclair ... there's no floating bus on the Timex, and even if there was ...which one bit of hardware would people want re-made?I'm just curious in the sense of I see interface 1's go for a fair bit on ebay and also multiface units etc.. so whats the one thing that you don't …
... possible owing to I/O and timing differences between the machines. Sinclair ... there's no floating bus on the Timex, and even if there was ... . I consider buying a TS2068 and replace these ROMs. Then supposedly ... precise) without a standard ZX-bus.
Hm ...Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... Pegaz;426987]- tzx, z80 and other format support, not ... actual Speccy timing.
[QUOTE]- Other graphics and beeper ... SideWize main sprite flashes and disappears, but thats can ... contended memory/floating bus emulation will certainly flash, jerk and/or ...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…
... DivIDE places data on the floating bus. This will kill this idea ... the following, all speed fixed - timing fixed - interrupt fixed
< ... has just been turned on and sets up custom screen ... this "extra unwanted initialisation", and trying to determine why it ...zxs v0.2 releasedI have released v0.2 of zxs if anyone is interested, judging by the response to the first release, I'd say not, but I'm gonna do it anyway!. It has h…
... 's an issue with the timing of display updates. Enter this ... games until that's resolved, and anything that uses multicolour effects ... you need to emulate the floating bus to prevent a number of ...
