[DSP-10] Need Help!

[Bob Larkin]

Hi Chuck,

"Almost for sure," the DSP program is not loaded.  That message means that 
the DSP is not responding when the PC attempts to read some of the DSP memory.

Most often, the lack of a load traces itself back to the reset of the DSP. 
This is an interesting area, in that there should be a reset when power-up 
occurs, and when the reset button is pushed. Different EZ-Kits seem to 
react differently, and don't always do this.

Before loading, the red LED should blink slowly. If this is not happening, 
loading will not work.  After the loading, the LED is on whenever the DSP 
is processing the 48 kHz interrupt. This is most of the time, and the LED 
is almost full brilliance. (An aside: you can put a 'scope on the LED and 
watch the interrupt usage---the interrupts come in sets of five and repeat 
every 104.2 microseconds.)

Check the reset and repeat power on to get the flashing LED.  Also, be sure 
you have the proper UHF3.EXE---that's the one for the EZ-Kit and UHF3X.EXE 
is for the KK7P boards.

For the whole group, has anyone with a really stubborn EZ-Kit figured out 
the reset process in detail?

Good luck!

73,
Bob  W7PUA

At 11:10 AM 3/17/2004, you wrote:
>Hi,
>
>My DSP-10 has been performing perfectly for the past 6 months until
>today.
>
>I down loaded the new updated files to give them a try.  When I tried to
>start the PC program after the DSP had loaded, I get the following error:
>  "Time out error obtaining DSP pointer table.  Either UHF3.exe is prior
>to 2.0 or DSP is not responding".  I tried this routine several times and
>got the same error message.  I then reloaded the original program and
>came up with the same error.
>
>At this point I felt that there was a problem with the DSP-10, so I ran
>the two diagnostics programs and they indicated that everything was OK.
>The Voltages on both U107 & U108 were correct and the two PLL's were
>locked up.  I then retried the original program again, but still got the
>error.
>
>The only thing that I noticed when I loaded the original or new operating
>programs was that the LED1 had a weak glow.  I do not recall that I ever
>noticed this before.
>
>Thank you for any help in this matter.
>
>73,  Chuck   WA6EXV
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