Video player with FLASH CARD 4 ZX Spectrum
ZXNet echo conference «hardware.zx»
Hello, All
This project is in no way connected with the "Society of Spectrum Lovers"
We are talking about a separate module with a hardware video decoder and analog
output, controller that generates the stream and flash card.
Hello andrews
and> you can communicate with the ZX Spectrum via COM...and the module will be possible
and> can be used independently, or together, as you like
And then you don’t need to do anything at all.
Take a PDA running Windows CE, or even a regular PC laptop and communicate with ZX via COM.
Or you can use it autonomously. :)
Hello andrews
and> again we didn’t understand... the video stream is generated for the mpeg hardware decoder
and> local small processor, for example ARM 7, it also loads the file from
and> !local! SD disk (and understands the file system)...and z80
and> how the client sends files of the current directory upon requests...that z80
and> can't accept 2K ASCII?
Why then do we need ZX?
It is quite possible to install eCos on ARM7, as well as GPS and so on.
Hello andrews
and> again we didn’t understand... the video stream is generated for the mpeg hardware decoder
and> local small processor, for example ARM 7, it also loads the file from
and> !local! SD disk (and understands the file system)...
IMHO, such a perversion is useless as a separate device planned for
Speck. This is very similar to yet another garden planting. Where to stick - main
question? It seems to me that it is more logical to join Romanych and CHRV in development
far away video axel and play it as an optional add-on to this card,
because parity of opportunities will remain. Hardware manufacturers anyway
there is so little left and the joining of efforts by hardware manufacturers is very
reasonable approach.
PS This is just my IMHO.
Hello andrews
Minor correction, the processor is not ARM7, but ARM9
if you take NEC's MP201 chip.
Hello Sonic
It differs in that the open architecture - one, has a composite output - two... and
whoever is not interested in doing it, doesn’t do it or three :)
Hello Sonic
Son> Why then do we need ZX?
Son> On ARM7 it is quite possible to install eCos, GPS, etc.
install, who doesn’t let you...you can communicate with the ZX Spectrum via COM...a module
can be used autonomously, or together, as you like
Hello Sonic
Son> 1) The CPU will not have time - it will download too much. At least 3.5 MHz.
Son> 2) In the case of video, this is of course not applicable, but audio is the same way
Son> you can play completely in the background, while, say, working in XAS.
again we didn’t understand... the video stream for the mpeg hardware decoder is generated locally
small processor, for example ARM 7, it also downloads the file from !local! SD disk
(and understands the file system)...and the z80 sends it to the client based on requests
files of the current directory...that the z80 cannot accept 2K ASCII?
ARM7+all hardware=application server
zx spectrum (z80) = thin client
analog video output is generated on the card itself
if necessary, muxed with output from zx spectrum
Hello andrews
It’s a good all-in-one thing, but we can’t get it here, at least not right away
found it. And how many legs does he have? what body? and in general how and how many layers
Solder the board? =)
Hello andrews
heroy, well, yes, I didn’t think about MIPS vs MHz =)
Andrews, we probably got the idea. It’s just not clear why here
client-server, and especially with some thread *z*80. ARM can handle everything. A
it is simply unprofitable to pack a bunch of iron.
There is really only one way out - a single-chip spec that acts as a push-button
controller (or is it enough for video? instead of counters? =)), but IMHO
1) this is the maximum that can be thought of for him.
2) it’s possible without it
and
3) it still requires a rather large matrix - $$$.
Hello andrews
> there is a desire to connect to the Spectrum as an external device via that
> the reason that nothing else is analogous yet, which is all
> could be convinced at CC'2006 very specifically...
So what? by connecting this crap to the spec you can show video on SS 2007
and say “look at the chip NEC sculpted, everything is hardware, the spec gives the command
start and stop, as well as pause... that's some awesome software
decision," and from the audience shouts of "NEC's first place!" .. you would still figure it out
first of all, what is Spectrum within the framework of today and to whom and why is it
interesting, there are more video players on the market than there are stars in the sky and their cost
junk... be it pocket or stationary... during development they were still
will become cheaper..
Hello andrews
What use cases are planned for the player? maybe there are some unique ones? IMHO on
The main advantage of the Spectrum over the pussy is that everything is tied to the CPU and goes
a struggle between software solutions, and not “who can turn the steepest stone” (as in pussy,
There is no point in going anywhere with a soldering iron, and the software is not allowed everywhere)..
so I can’t figure out the meaning of the video player on the spec implemented as
external “stone” in relation to the CPU... it’s somehow impossible to explain
a win in relation to pocket DVD players... maybe I'm missing something?
Hello NovaStorm
Just fresh (July 2006). You'll have to shake the Eltech to get the evalution board
I’ll get it, I’ll promise to write an article, maybe they’ll give it to me. And according to the links there it looks like Linux
in development tools from Trolltech.
Hello Raydac
Why do you think NEC created this chip? it's obvious there
advantages...look, it really has everything, even support
SD cards...
I want to connect to the Spectrum as an external device for the reason that
there is nothing else analogous yet, as everyone could see at CC'2006
very specific...
Hello andrews
and> how and how many layers of board to solder it on? =)
there would be something to solder... for now just download Trollitekh's software and master it
Hello ASDT
They were arguing from the wrong side...ARM9 will certainly do without the Z80. But here I have
typical z80 program, I formed a certain sequence and stuck it in
some kind of algorithm...I don’t care who calculates it...but I came up with everything in my own poor way
an ultra-economical screen allows for a new arrangement of stars or a 3D scene. Tomorrow
ARM100 appeared, I threw the previous one to hell, but there is no need to rewrite the software and even
no need to recompile :) this is Packard's Hewlett concept
Hello Raydac
You can think differently in writing. Physical processors, etc. Nothing, sir, they’re eating, sir.
Asymmetrical architecture was invented a long time ago by HP and that's what you and I
tried to do it in Tornado.
Hello andrews
"There have been discussions about multiprocessing more than once, it seems that they decided that the coprocessor is in
tens, or even hundreds of times more powerful than a CPU is not good =)"
Most likely, the AWP spec is no longer needed...
Hello andrews
"Personally, it was only in the mid-90s that I considered connecting the 8087 to the Z80,
but then I repented because I realized that it was nonsense.."
Can you be more specific?
Can strengthen the math part...
Hello andrews
and> Instead of puffing zx on decoding a compressed video stream
and> isn't it better to give the sopra as we wanted in zx tornado...and now
and> arma at the same price as then aveerki
The coprocessor on the Spectrum is a 10,000% dead end.. The company practically went for it
Peters, who made an analogue of the elephant with butterfly wings so beloved by you...
NO SPECIALIZED CO-PROCESSOR should be allowed on Spec
!!!!!!!!!!!! Be it video, audio, or game... Personally, I’m only in
in the mid-90s I considered connecting the 8087 to the Z80, but then repented
because I realized that it was nonsense..
Hello andrews
and> You can think differently in writing. Physical processors, etc.
and> Nothing, sir, they’re eating, sir. Asymmetrical architecture was invented a long time ago
and> HP and that's what you and I tried to do in Tornado.
Let's just say that the main advantage of Speck is that it is accessible to the developer
in the best sense of the word, in that there is no uncle who says “here I am
I put special chip for that, but here is a special one. chip for this and I write drivers myself -
buy a new version." Speck is like an old car, it still has the level that
available for modernization and modification by a private person, as I told Slava
Mednonogov "PiC is flawed if only because it is potentially impossible to
Slava Mednonogova"... so try to make a clone of PiSishka or a video player or
imitating them is of course honorable, but delusional, since they will throw stones here,
they'll look at you like an idiot there, and after a while you'll say, "not
Am I a fool..."... so if you reinvent the wheel, it's the one you ride on
will be or will be admired, and not the one about which you can say “here’s another one
bicycle... it's cool because it has no wheels and is carried on the back"
Hello ASDT
Igor, should I publish the documents you sent me... they’re in my archives
lie...what the hell is 8087...at90s1200...and I’m not suggesting a stupid resistor...server
applications are completely different
Hello Raydac
Standardize client requests (ZX Spectrum) to the application server and let
only your uncle will try to dictate his terms to you... another uncle will immediately appear
more accommodating... and the client himself is completely in your hands, as before.
Hello andrews
Instead of puffing zx on decoding a compressed video stream, wouldn’t it be better
this is to give the sopra as we wanted in the zx tornado... and now the armies are at the same price as
then aveerki
Hello, andrews
koroče z80+arm7(9,...)
Hello andrews
I won’t say that 4 z80 is a gain of less than 4 times :D
Hello ASDT
ASD> "Personally, it was only in the mid-90s that I considered connecting to the 8087
ASD> to Z80, but then I repented because I realized that it was nonsense.."
ASD>
ASD> Can you be more specific?
ASD> Can strengthen the math part...
Strengthening the swearing part is not a problem, the problem is that it is pointless, since it is not
meets the requirements of the platform and its concept.. It will be like
executive car with its aerodynamics put turbocharged
engine from formula one and demand that this car win
grand prix..
Hello NovaStorm
Nov> So, for thought - the HP iPAQ rx1950 on HPC.ru (hucksters!) costs $239. By
Nov> capabilities approximately correspond to the requirements of the topic. You can
Nov> do it at least for the same price?
No, he can’t, and if he says he can, he won’t take into account what it requires
mass production, investments in which can only be provided by the state,
if Andryusha persuades them to invest 30% of the stabilization fund in this business :)
Hello andrews
So, for thought - the HP iPAQ rx1950 on HPC.ru (hucksters!) costs $239. By
capabilities approximately corresponds to the requirements of the topic. Can you at least do
at the same price?
Hello NovaStorm
The price for MP201 in small quantities in Russia has not yet been established, since it is still
did not go on sale. Expect portable QVGA late next year
video players, because once there is a chip, there will be mass production on it. But this
I explained elsewhere that handhelds are a separate matter, they
are programmed completely differently and are bought by completely different people and for others
goals. They cannot be connected to LCD TVs, although they may appear in the future
and such models.
Hello andrews
and> the presence of a huge number of clones is evidence that there is one
and> concepts and requirements have never existed in the past and will never exist in
and> future...and this is probably even for the better, because... almost 25 years active
and> lives are worth something!
If there weren't a concept, there wouldn't be a computer... There was a Spectrum after all
business project in the 80s, and there are no business projects without goals... there are a lot of clones
they did, but practically no one supported them... local support is not in
score, the release of two or three games as a clone is not a success, but... a misunderstanding
rather..
Hello NovaStorm
Nov> So, for thought - the HP iPAQ rx1950 on HPC.ru (hucksters!) costs $239. By
Nov> capabilities approximately correspond to the requirements of the topic. You can
Nov> do it at least for the same price?
send the technical specifications, I’ll think about it...if you need several pieces (3-10), then maybe. and
I can...small-scale production will have to be organized by you yourself, from me
no capital for this
Hello Raydac
Ray> does not meet the requirements of the platform and its concept..
the presence of a huge number of clones is evidence that a single concept and
requirements have never been in the past and will never be in the future...and that's even
probably for the better, because... Almost 25 years of active life are worth something!