15 May
2007
15 May
'07
5:53 a.m.
At 07:40 PM 5/13/2007, you wrote:
About 3 years ago I announced to the list a little
something I'd done with
an IBM PC/XT with CGA that was unconventional for the platform
(full-motion video using stock hardware). I recently gave a talk at a
hacker convention on the complete methodology of how I did it, and the
video of that talk is now available here:
http://www.archive.org/details/8088CorruptionExplained
This whole discussion has reminded me of an unfinished project of mine, a
192x99, 19,008 pixel LED display. I have not manufactured the driver
circuits, but they have been designed.
The display is organized/refreshed as 11x1728. 8x11 characters look very
good to me, so I designed it to handle 24 wide by 9 high characters.
Here are pictures of it:
Front: http://www.stockly.com/images2/060129-LED_Display_Front_2718.jpg
Back: http://www.stockly.com/images2/060129-LED_Display_Back_2716.jpg
Weight of all the
legs: http://www.stockly.com/images2/060129-Weight_of_39584_Legs_2696.jpg
As you can see from the pictures it is as big as a couch. : )
I built it in the spirit of blinkin lights for my Altair. 19008 LEDs is
2376 bytes, 71280 bytes a second at 30 frames. The altair should be able
to handle this...??? Any ideas?
I would really love if it could handle a shade or two of grey. : ) I'm
considering now building a driver out of an FPGA. It would be able to
handle a fast refresh rate and frame rate in order to get grey scales. I
was thinking 4 shades would be enough. The FPGA might even be able to act
as the dual port SRAM for the bitmap display? Any ideas how I should
proceed? : )
You can find my thread on this on USENET called "Wall of RAM". I have
copied it here:
http://www.stockly.com/forums/showthread.php?t=21
Grant
