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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…
... end. Does it appear on Harlequin?
[QUOTE]The product ... FAQ and Wiki assume the contention happens at T1, while the ... T1 itself, or does the contention really take place at beginning ... and memory access (saying the contention happens at point T and ... -
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…
... end. Does it appear on Harlequin?[/QUOTE]
I don ... real spectrum, let alone the Harlequin, but then never got round ... T1 itself, or does the contention really take place at beginning ... 0x4000 - 0x7fff). For IO, the contention starts at T2. For port ... -
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…
... real spectrum, let alone the Harlequin, but then never got round ... the same time as the contention ends, then there are two ... -
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…
... , I'm saying that Memory contention does not start until 14337 ... 14336, then it will experience contention - if it is being fetched ... wont.[/QUOTE]
OK, contention.tap (in the latest fusetest ... do you get on the Harlequin and on a real machine ... -
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…
[QUOTE=Philip Kendall;213989]OK, contention.tap (in the latest fusetest. ... do you get on the Harlequin and on a real machine ... />
All zeros on the Harlequin.
On an issue ... -
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…
... now finally understand how your contention scheme works (and gives identical ... zeros on Harlequin? If I remember correctly, Harlequin applies memory contention at 14338 ... -
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…
... floating bus timing and how contention affects instructions.
2. ... . Indeed they match the Harlequin because I've moved the ... doing analysis from software, the contention [I]looks like[/I] ... talking about which cycles the contention is [B]actually[/B] ... -
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…
... ]So, has the "[I]contention starts at 14336 and continues ... I]" statement come about because contention was investigated using IO instructions ... long, which means the contention can be applied anywhere in ... /> [1] or at least, the Harlequin as there's still the ... -
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…
... just one type of contention, which starts at 14336 ... /> My only explanation why Harlequin gets the same results as ... that the memory contention in Harlequin does not work ... is that the IO contention gets applied in the ... you change the memory contention to be the ... -
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…
... is just one type of contention, which starts at 14336 and ... later is that the memory contention in Harlequin does not work as ... I was thinking about 2 contention patterns.
[QUOTE]Chris ... the same as the IO contention pattern?[/QUOTE]
I ... -
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…
... have a pointless crossover between contention models.
The ... others not, and the memory contention being the same as the ... being a clean period of contention spanning the whole bytefetch - ... />
I'm wiring up Harlequin now. I don't expect ... -
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…
... you'd just finished your contention implementation based on the old ... I've seriously simplified the Harlequin waitGen circuit, and everything is ... -
Oxford Speccy meetup, October 20th[b]Update:[/b] Date and venue decided - The Gloucester Arms, from 2pm, 20 October 2007. Full details: [url]http://matt.west.co.tt/spectrum/oxford-spe…
... , the Universe, and Memory Contention on the Harlequin (aka Bomb).
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…
... threw at it (floating bus, contention, whatever), then, to me, that ... , since I'm designing the Harlequin.....
ChrisMore colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... =aowen;398746]
In the Harlequin full decoding. In the replacement ... think it'll need a contention cycle if the ULA is ...ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…
... byte fetch (equivalent to Harlequin's AL1) and then ... the second byte fetch (Harlequin's AL2). The RAS ... way it cancels the contention with the rising edge ... of state T1. This "contention off" mode persists until ... ignored by the ULA contention handler as it will ...Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... the composite output of my Harlequin:
Is yours similar ... 32 printers work with the Harlequin, clagged onto the back of ... in contention (SPECTRA, If1bis and DivMMC included). I think the Harlequin is ...Please explain Spectrum FPGA-clones to meI've been using the great ZXDS-emulator on the DS XL so far, which is great. But I kinda missed toying around with hardware. I've tried bidding on a …
... series chips to make a harlequin or speccybob and then saw ... 512K Spectrum with no memory contention (similar to a Pentagon I ... works and lack of memory contention, border and multicolour effects don ... work on ZX Prism. Memory contention will be modelled in the ...Looking for advice on building a HarlequinNew member here. From the US. My first computer was a Timex Sinclair 1000 back in the early 80s (in fact, I got one of the first batches sold in th…
[quote="Claudius;895910"]
The Harlequin is for ordinary people not ... I've have a zero contention video memory. That would be ... content putting my rev G Harlequin together. If I have some ...Spectaculator 2.0 availableHi, I've just released a new version of Spectaculator. It should be on WOS in a few days. Here's a cut 'n' paste from comp.sys.sinclair: Spectacula…
... rewind
o Memory contention and scanline-based multicolour rendering ...ZX Spin 0.3 ReleasedStandard Cut'n'Paste from CSS post again! I can't get to my webpage, so I've uploaded SPIN0.3 to WOS, Alt.Binaries.Comp.Sinclair, and also Daren Pea…
... .
Fixed an \"Emulate Memory Contention\" bug
Added Magnum Lightgun ...[NEW]: Spectaculator 4.0Hi everyone, Finally managed to finish it... enjoy! --- [NEW]: Spectaculator 4.0 Spectaculator is a Sinclair ZX Spectrum emulator for PCs runnin…
... />
o Brand new memory contention system and cycle-accurate display ...ANN: "Sam Revival" magazine issue 7 out now (SamCoupAs there's been a few posts in these forums about the Sam Coup? I thought I would mention that issue 7 of the 'Sam Revival' magazine is out... Insid…
... off with 'MODE 1
Contention' where Simon Owen has carried ...SpecEmu 2.1 betaFinally I think I've cracked all the gory contention details required by those trendy multicolour demos (48K/128K modes only, +3 contention can wait …
... 've cracked all the gory contention details required by those trendy ... (48K/128K modes only, +3 contention can wait for another day ...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…
... /> - Fixes to some overlooked opcode contention timings.
- Improved floating bus ...how do you view 'delta compressed' videos from BMP2SCRusing BMP2SCR, you can compress AVI to a chain of binary files, and the help file says something about streaming .TAPs. However the BMP2SCR manual ha…
... etc, my only bone of contention about this otherwise excellent utility ...People suckPeople suck, thats my contention, gimme a pen and paper, an etchosketch, I'll prove it, the truth, the fact, the factorum. I'm tired of this back sta…
People suck, thats my contention, gimme a pen and paper, an etchosketch, I'll prove it, the truth, the fact, the factorum. I'm tired of this back stabbing arch-humanity bullshit. We are a virus with shoes.
Now who said that?Z80 cycle contentionHi, Does anybody knows exactly when the ula halts the Z80 clock during a memory r/w cycle? I mean which Z80 clock cycle, T1 or T2? Thanks..
Hi,
Does anybody knows exactly when the ula halts the Z80 clock during a memory r/w cycle?
I mean which Z80 clock cycle, T1 or T2?
Thanks..
