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Author Topic: Could A Fake Coolrunner Be A Cause For A Long Slim Boot?  (Read 64 times)

boflc

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Could A Fake Coolrunner Be A Cause For A Long Slim Boot?
« on: March 11, 2012, 03:23:00 PM »
as long as the xilinx chip reports properly when programming, you should be good to go.

1) try different lengths on cpu-rst.  28, 35, 42-43, 50cm.  (a t-x slim post qsb makes this testing easy, but you can certainly piecemeal your own wires)

2) try switching to "phat" mode.
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boflc

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Could A Fake Coolrunner Be A Cause For A Long Slim Boot?
« Reply #1 on: March 11, 2012, 05:42:00 PM »
chip not getting identified properly could present an issue.. but if you have done others.. well, it's probably not that.

phat/slim isn't about the wiring.  cpld programming directs the output to pins.

try your cpu-rst wiring length.
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kiler01

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Could A Fake Coolrunner Be A Cause For A Long Slim Boot?
« Reply #2 on: March 14, 2012, 12:51:00 PM »
hell yeah!!! got it working.

i tried cutting the wire to 40cm lenght it didn't work. so a fried told me to try another chip and shzaam! it works. boots on ~5cycle on cold boot and ~~2-3 afterwards.

 it's pretty strange.I used xilinx impact and jtag tool's files for programming with verification afterwards. and for this other chip i used gcprog or what's it called. well i'm happy it works. now i gotta gather it all up and see if the times are affected
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