[Coco] DE-1 Clarification Please

[tim franklinlabs.com]

   James,

   The order doesn't matter. The ROM burns into one flash chip and the POF
   burns into another. There should't be and "squashing" of code based on
   order. If the DE1 isn't booting after following the steps listed in the
   instructions then something is wrong. I haven't set up a DE1 as a CoCo
   in a while but if memory serves. it was pretty straight forward.

   Just remember, after programming the POF, set the swich to RUN to
   prevent any erroneous writes that could wipe it out.

     On October 28, 2017 at 1:58 PM James Ross wrote:
     Hey Tim,
     Thanks for this clarification. Nice to know!!
     Since the day I got my DE1 to boot up to the 3 amigos, I have not
     had time to play w/ it again. However, I really want to get the
     process down pat, since I want to go back-and-forth re-programming
     it with tutorials and the CoCo3FPGA.
     Here is my question: does the order in which you program DE1 matter?
     For example, the last few messages on the Yahoo group a couple of us
     in that thread have determined that you must:
     1) First program the FLASH w/ the ROMS
     2) Next program the CoCo3 FPGA *.pof file
     Since if you reverse that order, programming the FLASH second, it
     will clobber the *.pof file?
     Since apparently to program the FLASH, regardless which control
     panel you use, the process must load a *.pof file -- w/ the older
     control panel you have to do it manually, w/ the newer control panel
     it does it automatically.
     *OR* am I/we incorrect in that assessment?
     James
     ________________________________________
     From: Coco on behalf of tim franklinlabs.com
     Sent: Tuesday, October 24, 2017 9:58 PM
     To: CoCoList for Color Computer Enthusiasts
     Subject: Re: [Coco] DE-1 Clarification Please
     The PROG/RUN switch enabled the write capabilities of the on board
     FPGA
     flash device. NOT the FLASH RAM. The FPGA doesn't retain anything
     when
     power is removed. You can send the progtam directly to the FPGA
     (.sof)
     file and run it using the programming tool. When power is removed,
     the
     FPGA forgets the program. There's a "Config Flash" chip connected to
     the FPGA that programs the FPGA automatically at power up. This
     flash
     is programed by placing the RUN/PROG switch in PROG mode and sending
     the POF file the same way you send the SOF file This is done with
     the
     programmer tool (not the control panel).
     The control panel allows you to write to the on board external
     flash. A
     totally seperate chip. This chip is NOT connected to the RUN/PROG
     switch therefore the switch has no affect on writing to it.
     On October 24, 2017 at 4:22 PM rcrislip wrote:
     Trying to follow the various procedures to flash/program the DE-1 is
     a
     little confusing for me. An answer to this question will clear the
     fog
     tremendously. When using the Control Panel, is the "prog/run" switch
     set to prog or run, likewise when using Quartus, what position is
     the
     switch to be in? I think I know, but conformation from you folks
     will help a lot. TIA
     RECrislip
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