Amiga.org
Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: ozkano on June 23, 2008, 01:36:06 PM
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this project done by Tolga one of the member of commodore.gen.tr (turkish commodore commidity)
this is the link of the project
http://www.commodore.gen.tr/forum/index.php?topic=2278.0
this is the demonstration
http://i288.photobucket.com/albums/ll185/tabaci/?action=view¤t=tfegoodsmall.flv
the first step of project has finished (Amiga part) it will also support Atari and Msx and much more
-it support all amiga games (no mather dos or track loading)
-supports as DF0: or DF1:
-using regular 9 pin amiga joystick to select game from menu
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Very interesting!
What about mounting it internally and running it off the host computers power supply?
I wonder if it will be available to the community ... My Turkish is a bit rusty (non-existent lol)
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Interesting stuff... they seem to have given it composite video output (Eh??) and a joystick input to control it.
I still think that using a default disk image and using the host computer to control disk selection is the way to go.
I wonder what is at the heart of the design?
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right now it does not support video over lay because video quality decrease so by using a switch you can change video input, amiga or floopy emulator,
this is the protype of this emulator, it fits internal drive and takes power from mother board
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LCD was not prefered lack of limited lines at one time
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heart of the design is atmega32 16pc. currently project is on hold due to *rather unexpected* progress of the Turkish team in the Euro 2008 finals :)
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Cool...
Merhaba by the way :-)
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I was just curious as to why it was composite output and not RGBS? Does the atmega32 have composite out?
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Yet an another Floppy Emulator !?! This one seems similar to the sdiskemul (http://atariamiga.free.fr/installation_sdiskemul_amiga600.php)
!
alexh wrote:
I was just curious as to why it was composite output and not RGBS? Does the atmega32 have composite out?
Maybe because in this case you need only 2 wires (gnd + video) ?
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I'd like to see what horsepower and minimum clock speed you would need to generate a colour composite video signal using only a micro controller and one I/O.
Perhaps with a 120MHz microcontroller and using 100% cpu power you *might* do it.
Video encoders are quite complex beasts.
B&W might be easier.. but we're still taking reasonable amounts of CPU power to time everything to 27MHz.
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alexh wrote:
I'd like to see what horsepower you need to generate a composite video signal using only a micro controller and one I/O!
It's not too hard : the composite video is only black and white.
Now it's "easy" to do some video output with an modern uC.
look at this demo :
http://pouet.net/prod.php?which=50141
;-)
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Generating the CSYNC timing marks and Luma & Chroma modulated data using nothing but the CPU and a timer?
You sure?? Cool.
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B&W might be easier.. but we're still taking reasonable amounts of CPU power to time everything to 27MHz.
Yes it's B&W ! Additionnaly 27Mhz is too much to display an 320*200 picture !
An 10Mips uC is enough (look at the sdiskemul!).
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alexh wrote:
Generating the CSYNC timing marks and Luma & Chroma modulated data using nothing but the CPU and a timer?
You sure?? Cool.
I said B&W ;-)
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The microcontroller demo doesn't use encoded outputs, it has separate RGBHV but still very cool.
20MHz to do the sound and gfx including sync... v cool.
Yes it's B&W ! Additionnaly 27Mhz is too much to display an 320*200 picture!
Yeah, I know. It's the SDTV natural frequency.
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Oh you are talking about the Craft Demo. Yes it's an RGB design (impossible to do PAL signal without an true composite output with an simple uC).
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http://www.linusakesson.net/scene/craft/ has all the lovely details about this demo
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Piru wrote:
http://www.linusakesson.net/scene/craft/ has all the lovely details about this demo
:-o
Anyone not impressed by this is missing a chromosome!
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How about using parallel port instead of floppy? since its much faster (IIRC), and more accessible
so that we could use memory cards instead of ZIP diskettes and similar..
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i`m interested to see how your suggestion works