winIDEA HelpUsing ICUM as a first Boot core
Using ICUM as a first boot core requires a custom procedure to establish a debug session. Python scripts are available per request from iSYSTEM Technical support.
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This page describes ICUM usage in RH850 1st Gen devices (where cores are shown as PE1/PE2/ICUM...). On U2A, ICUM enabling/disabling is performed through Hardware Property Area - see Technical Note. |
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Boot Core to PE1 via in Hardware / CPU options / Reset. |
At all times leave the Boot Core to PE1.
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Disable ICUM with a Python script. |
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Download code to FLASH. |
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Re-enable ICUM with the script. |
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Reset CPU. |
After CPU reset, debug status 
is in PE1/PE2 winIDEA instances. For any code changes the above steps must be repeated, because of ICUM protection.
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Open secondary winIDEA instance via Debug / Core / ICUM. |
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Load symbols only. |
In secondary (ICUM) winIDEA instance load symbols only
. At this point secondary (ICUM) winIDEA should have status STOP and primary (PE1) status PE1 DISABLED.
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Run ICUM in secondary winIDEA. |
Run ICUM in secondary winIDEA, reset CPU in primary (PE1) winIDEA. The ICUM application is responsible for booting PE cores.
