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Brand new River Raid remake?one of my friend is trying to make a riverraid remake on flash just to have fun, I checked zx spectrum port of river raid. it is bad, really bad, jer…
... have a little less video memory contention than previous 128K machines, so ... are you claiming have less contention on the +2A/+3 than ... is not pointing to contended memory, which is easy to arrange ... , there will actually be more contention on the +2A/+3 for ... -
Sinclair BASIC compiler for PC?Boriel's compiler is very powerful but it isn't meant for Sinclair BASIC, and the old compilers in the archive have their limitations: BASIC listing …
... /> I wasn't talking about memory contention. Interpreted code is always much ... .
[QUOTE]
- all contention issues aside. And a compiler ... -
Sinclair BASIC compiler for PC?Boriel's compiler is very powerful but it isn't meant for Sinclair BASIC, and the old compilers in the archive have their limitations: BASIC listing …
... /> I wasn't talking about memory contention. Interpreted code is always much ... -
Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…
... page 2 due to the memory contention issue).[/QUOTE]
No ... the top 16K of BASIC memory lives) as needed; no need ... -
The So What's This Buzzsaw All About Then? Thread.Erm. This: [URL="http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap"]http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap[/URL] Keys…
Ah, good point. If memory contention is disabled, it'll do ... timing checks against the screen memory and probably conclude that it ... -
Should I buy a Sam Coupe?Hi folks I been interested with the Sam Coupe since Miles Gordon Technology released the SAM as the successor to the Spectrum. Are their any SAM us…
... ?[/QUOTE]
Due to memory contention while the video is being ... up to 28MHz with uncontended memory reading - making the SAM about ... run - both to address the memory paging and patching AY sound ... -
Should I buy a Sam Coupe?Hi folks I been interested with the Sam Coupe since Miles Gordon Technology released the SAM as the successor to the Spectrum. Are their any SAM us…
[QUOTE=Quazar;376976]Due to memory contention while the video is being ... up to 28MHz with uncontended memory reading - making the SAM about ... run - both to address the memory paging and patching AY sound ... -
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…
... hardware constraints (Z80 undocumented opcodes, memory contention, floating bus, fixed number of ... -
Colour clash on the Commode64?Was there any? Every now and again, I see a screen shot like this... [img]http://www.lemon64.com/games/screenshots/full/j/jack_the_nipper_02.gif[/i…
... possibilities here, also 128k of memory was enough)... we would probably ... also a lot more predictable) memory contention. -
Colour clash on the Commode64?Was there any? Every now and again, I see a screen shot like this... [img]http://www.lemon64.com/games/screenshots/full/j/jack_the_nipper_02.gif[/i…
... also a lot more predictable) memory contention.[/QUOTE]
Didn't ... -
Colour clash on the Commode64?Was there any? Every now and again, I see a screen shot like this... [img]http://www.lemon64.com/games/screenshots/full/j/jack_the_nipper_02.gif[/i…
... also a lot more predictable) memory contention.[/QUOTE]
Really? I never ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... opportunity - of course the extra memory and sound chip were great ... old hat, and maybe the memory contention could have been avoided?), but ... ability to flip the screen memory from 16384 to 49152) and ... -
Best Spectrum game from 2009Ok, its almost 2010, and we have to decide which was the best game this year :) Miles Mad Mission [url]http://www.worldofspectrum.org/infoseekid.cg…
... fairly similar. The lack of memory contention gives them a boost over ... 's the ones with more memory and switchable higher processor speeds ... -
Best Spectrum game from 2009Ok, its almost 2010, and we have to decide which was the best game this year :) Miles Mad Mission [url]http://www.worldofspectrum.org/infoseekid.cg…
... and memory contention. Second generation (1990-1995), including Pentagon, has no memory contention and ... -
Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... great goal when compatibility and memory contention will be fixed or implemented ... -
Project OTLA / k7zx (high speed loading)Hello, I am proud fan of zx spectrum (I do not have speccy, but clones (Didaktik Gama, Didaktik M)), I am using portable CD player to load games. Al…
... .
As regards the memory contention, this is very true and ... -
Using the stack to copy memory blocksA [b]PUSH[/b] and a [b]POP[/b] instruction together take less time than two [b]LDI[/b], so long [b]POP/PUSH[/b] sequences are sometimes used to copy …
... it largely comes down to memory contention. LDI has DE on the ... -
Why was/is the ZX Spectrum so popular?Why? How? Even after all this time you have a website like this etc.... It's just amazing!
... , and thanks to not having memory contention either, the BBC is a ... -
Help with loaderHelp! I have been racking my brains for too long, and so it?s time to ask for help. Kyd Cadet II is about 98% complete now and I am trying to put to…
... will be screwed due to memory contention. How big is AGD's ... -
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…
... . +2A/+3 models use different memory contention, ports adressation and ram pages ... mode switching (switch roms and memory layouts)
My ZX128 ... -
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…
... as 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 ... never 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
... +2A 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
... +2A 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
... +2A has the correct 128 memory contention. There are a lot of ... -
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…
... code up in memory (>=32768 ) to avoid memory contention.[/QUOTE]
But ... code that's in contended memory is the bit that fills ... , it's all in uncontended memory.
(OK, I admit ... -
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…
... , because many clones had no memory contention and related problems, and also ... -
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 ...
