fpgaol_docs/err_sol.md

Error and Solution

can not login

Error message:

Your username and password didn't match.
Please try again.

Possible reason:

• wrong username or password

Solution:

Check your username and password. Or Ask the administrator to reset your password.

refuse to acquire

Error message:

Sorry, but...
You might see this page if you:
......
WARNING: This will release the FPGA you are currently using.

Possible reason:

• Attemptted to acquire multiple FPGA instances.
• Opened two FPGA pages.
• Refreshed the FPGA page.

Solution:

Open only one FPGA page. Or press Reacquire button.

no instance available

Error message:

There are no FPGA instances currently available.

Possible reason:

• Some devices were accidentally offline.
• Many users are using at the same time.
• Both above.

Solution:

Wait and try again. Or contact with the administrator.

upload or program fail

Error message:

Failed to program device with the uploaded file. Perhaps this file is not a valid bitstream?

Possible reason:

• You have select the wrong chip(not xc7a100tcsg324-1).
• poor network condition.
• Some device(s) accidentally went wrong.

Solution:

Check the chip and try again.

connection closed

Error message:

Connection closed unexpectedly!
Perhaps it's a network error
or you may be holding FPGA for too long (>10 min).

Possible reason:

• poor network condition.
• timeout.

Solution:

Wait and try again.

fail to render waveform

No Error message: (your browser get stuck)

Possible reason:

• The signal you put on LED(s) change too rapidly.
• poor network condition.

Solution:

Use period mode waveform.