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TMS320F28379D: f2838x_cpu1_echoback_demo_FLASH.out from C2000Ware download doesn't run on F2837x controlCARD R1.3

Part Number: TMS320F28379D
Other Parts Discussed in Thread: C2000WARE

I can download and run the echoback application through CCS v.10 to my control card.  There are a few places where the DCC timer doesn't report DONE or ERROR, and I stick in an endless loop.  I can edit the bits read from the registers to cause the initialization to complete, and get to the main operation loop, but then I can't get EtherCAT Configurator to move the EtherCAT slave off INIT.  I'm not surprised that it mis-behaves since I had to get around the DCC timer failures.  So my questions ere these:
1. Should the software, which in part appears in directories names f2838x work on my f2837x based controlCARD?
2. If not 1, is there a known problem for why the timer doesn't come read on initialization?
3. Are the ready-made applications in C2000Ware or elsewhere that are know to run in my environment?
4. I pointed CCS at directories where I found source code, and the code appeared to be slightly different than what was used for the executable,
    as stepping though the source code I was several lines away from the code actually being executed.