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The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
... /+3 models use different memory contention, ports adressation and ram pages ... -
The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
but didn't Andrew choose the +2a as the basis because the memory contention is in the right place? -
The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
... the basis because the memory contention is in the right place ... sinclair manual.
The +3 contention is built to the specifications ... -
The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
... sinclair manual.
The +3 contention is built to the specifications ... seen the effect of memory contention being in the wrong place ... -
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
... has the correct 128 memory contention. There are a lot of ... -
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
... has the correct 128 memory contention. There are a lot of ... -
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
... at a technical level the contention on this model is so ... -
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
... at a technical level the contention on this model is so ... -
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
... has the correct 128 memory contention. There are a lot of ... -
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
... being written for the page contention of the +2A rather than ... the +2A has the page contention that Sinclair *said* the original ... don't fix the page contention issue. They're also pretty ... -
Why doesn't my loop work?Can anyone help me understand why my loop doesn't work? Is it to do with how DEC HL affects the flags? [code] ; Read 32k bytes from port 191 as fa…
It'll run particularly slow to be honest ;)
Move the code up in memory (>=32768 ) to avoid memory contention. -
Why doesn't my loop work?Can anyone help me understand why my loop doesn't work? Is it to do with how DEC HL affects the flags? [code] ; Read 32k bytes from port 191 as fa…
... (>=32768 ) to avoid memory contention.[/QUOTE]
But the only ... -
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…
... gonna lose a lot to contention. Unless the CPU is fast ... -
Spectaculator... is it worth the money?Hi Folks, This is a genuine request for feedback. I have used the demo version of Spectaculator and it seems a very good Spectrum emulator. Lots o…
... speed. Maybe its an inaccurate contention issue, maybe IY or IX ... -
Xmas / NY present for all ZX UsersHi there, wasn't sure where this should go, but this is a couple of years "work" during free time while not in the office. This is a package of 480 o…
... has a different contention pattern and no contention on ports so a ... -
NEW! Poll Best Spectrum game from 2010 - Everybody vote here please -OK, so since there were several releases after the day I posted the original Poll, I would post this new one to include all the games from 2010. Eve…
... has been a point of contention and you can't please ... -
Converting TRD-Dos into TapHello, there are still many programs appearing on TRD-Dos or SCL format and users of normal Spectrum cannot run them. Of course I know about emulator…
... many clones had no memory contention and related problems, and also ... -
How the spectrum generates the video from ramHi everyon, I know that most people here allready know this but i think i found out how the spectrum acctually dispalys stuff and why the LD x, (HL)…
... is the source of the contention delays when reading or writing ... -
How the spectrum generates the video from ramHi everyon, I know that most people here allready know this but i think i found out how the spectrum acctually dispalys stuff and why the LD x, (HL)…
... conflict and this is called contention. By having a physically separate ... 32k without any worries of contention. That's why the top ... -
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
[QUOTE=BiNMaN;504855]so memory contention on the toastrack and the ... -
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
So the question for games not running properly is not that the CPU contention timing is different, but that contention is applied differently to memory banks on the toastrack/+2 and the +2a/b/3.
Which runs the most games? -
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... is not that the CPU contention timing is different, but that ... contention is applied differently to memory ... -
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... is not that the CPU contention timing is different, but that ... contention is applied differently to memory ... /+2B, or written assuming the contention in the manual will work ... -
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…
... to slow down CPU anymore. Contention is missing but should be ... -
Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... (already overclocked) and simplified memory contention scheme - afaik all memory was ... (some utilising Z80s) suffered less contention, but this led to significant ... -
A thousand core CPU?Maybe this is old news to most people on here, but according to: [url]http://www.zdnet.co.uk/news/emerging-tech/2010/12/25/intel-why-a-1000-core-chi…
... to be some shared resource contention going on. It's a ... -
A thousand core CPU?Maybe this is old news to most people on here, but according to: [url]http://www.zdnet.co.uk/news/emerging-tech/2010/12/25/intel-why-a-1000-core-chi…
... to be some shared resource contention going on. It's a ... -
ZX Poly - wow!Hi Folks, Came across the following: [url]http://www.igormaznitsa.com/zxpoly/zxpoly.html[/url] Has anyone else seen this before? I am no hardware…
... it would fit around the contention of the Z80/ULA or ... -
A thousand core CPU?Maybe this is old news to most people on here, but according to: [url]http://www.zdnet.co.uk/news/emerging-tech/2010/12/25/intel-why-a-1000-core-chi…
... apples vs oranges here - my contention is that the XBox runs ...