[Coco] altera DE1 board

Frank Pittel fwp at deepthought.com
Tue Oct 19 22:44:56 EDT 2010

On Tue, Oct 19, 2010 at 09:31:25PM -0400, Steven Hirsch wrote:
> 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 :-).

I saw that thread. :-) It was while reading a thread on the yahoo site for the
project that I saw mention of needing the coco rom. I think I'm in the same
position that you were in. So close I can taste it but still can't get it to

the other Frank

More information about the Coco mailing list