[Coco] Altera DE1 for sale

[tim franklinlabs.com]

   One thing I always found odd about the Altera boards (DE1/DE2) was the
   video sync code supplied with the CD as "Examples". I noted that the
   code has the VGA sync timing parameters correct but the code adds in
   "fudge factors" (i.e. delay parameters). The DE2 has additional clocks
   added to the code beyond the delays. I always attributed this to the
   clock difference between the 27.125Mhz being limited to 27.2Mhz from
   the PLL on the Altera board.
   To investigate this, I rewrote my own video sync generator that uses
   only the true video timing with no added delays and "fudge nuggets" of
   code. It works perfect and doesn't have any problems with any monitor
   I've tried. I discovered what they were doing wrong and am convinced
   the code was written by interns (LOL)

     On October 21, 2017 at 9:57 AM Rob Rosenbrock wrote:
     It's been awhile since I installed the software (this is my second
     board) but I remember the disc being pretty useless. I had to
     download the newer version anyway. I'll be doing it again...
     BTW, I'd bet these came from ITT Technical Institute as part of the
     closure. My board is labeled as EECS which sounds like one of their
     class labels. Mine is board #60, so that might help in determining
     how many are available.
     Thanks for the link.

     On Oct 21, 2017, at 10:29 AM, tim franklinlabs.com wrote:
     If needed, the entire CD for the DE1 is available here..
     [1][1]http://hamblen.ece.gatech.edu/DE1/
     On October 21, 2017 at 9:23 AM Rob Rosenbrock wrote:
     FWIW:
     I'm taking a closer look at it today. My board is actually in
     excellent shape; apart from the broken plexiglass, it looks almost
     new.
     I connected it to a monitor and the (included) power supply. When I
     pressed SW11, (with SW12 in the RUN position,) the monitor came
     alive with the Altera demo screen and the LEDs began their chase
     sequence. The 7-segment displays began counting from 0-F. Pressing
     Key0 reset the demo, and SW0 displayed a color test screen. When I
     connected a speaker to the headphone jack, I got a normal tone. SW11
     stops and starts the demo.
     In my box, I received the DE1, a CDROM, USB cable, and the power
     supply. I did not receive any documentation (other than the CD), nor
     a jumper wire. Frankly, we only need the board and the power supply
     - the rest is easily obtained or is irrelevant; the software is
     downloaded. Despite my OCD I'm pleased.
     Looking at the board, SRAM 512KB is a IS61LV25616AL-10 which (as far
     as I can tell) is the older version. The newer boards used the
     IS61WV25616EDBLL-10. I don't anticipate any issues.
     It's not much of a gamble. Stakes aren't very high.
     On Oct 21, 2017, at 5:58 AM, Mark McDougall wrote:
     On 21/10/2017 11:55 AM, James Ross wrote:
     Similar experience here, too...
     Thanks Jim, Rob, Dave & James for your feedback.
     I think I'll take a gamble; looks like it's luck of the draw. I
     suspect the seller might mix it up a bit if I purchase 4 though...
     we'll see. I'm yet to get confirmation of my counter offer, though I
     didn't offer any less than someone else has reported - and I'm
     taking 4...
     Regards,
     --
     Mark McDougall
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     References
     1. [6]http://hamblen.ece.gatech.edu/DE1/ 2.
     mailto:[7]Coco at maltedmedia.com 3.
     [8]https://pairlist5.pair.net/mailman/listinfo/coco 4.
     mailto:[9]Coco at maltedmedia.com 5.
     [10]https://pairlist5.pair.net/mailman/listinfo/coco
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     [11]Coco at maltedmedia.com
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References

   1. http://hamblen.ece.gatech.edu/DE1/
   2. mailto:Coco at maltedmedia.com
   3. https://pairlist5.pair.net/mailman/listinfo/coco
   4. mailto:Coco at maltedmedia.com
   5. https://pairlist5.pair.net/mailman/listinfo/coco
   6. http://hamblen.ece.gatech.edu/DE1/
   7. mailto:Coco at maltedmedia.com
   8. https://pairlist5.pair.net/mailman/listinfo/coco
   9. mailto:Coco at maltedmedia.com
  10. https://pairlist5.pair.net/mailman/listinfo/coco
  11. mailto:Coco at maltedmedia.com
  12. https://pairlist5.pair.net/mailman/listinfo/coco
  13. mailto:Coco at maltedmedia.com
  14. https://pairlist5.pair.net/mailman/listinfo/coco