[Coco] altera DE1 board
snhirsch at gmail.com
Tue Oct 19 21:31:25 EDT 2010
On Tue, 19 Oct 2010, Frank Pittel wrote:
> I needed a coco3 rom so I found the mess roms and picked one of the *.zip files
> for the coco3 and used the de1 console software to write the coco3.rom file to
> flash. I then power cycled the board and reloaded the *fpga*.sof file. With the
> exception of the black screen I get the same results that I got without the coco3
> rom loaded in flash.
> Am I doing something wrong, missing a step or two, etc? I think I'm going to try
> using an older fpga file and see if that helps.
I feel your pain. There were a couple of minor details that are easy to
miss. Took me days to get it going.
One major stumbling block: The numbering of the slide switches and
momentary buttons is bass-ackwards to my Western sensibilities; running
from right --> left. Beyond that, remember that they start from _zero_,
not one. The little identifiers on the silkscreening are/were too small
for me to see with my late-50s eyesight.
I spent days flipping on and off what I thought was SW7. It was actually
SW2. Once the light went on, I was soon off and running.
Check the list archives for a looongggg thread featuring yours truly.
There may be something valuable to be gleaned. Or, there may only be the
impression that I am great at confusing myself :-).
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