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strange debug ROM table entries

mete
Senior

Hello,

I am looking into the ROM tables on STM32F439ZI.

TPIU (0xE0040000) class type is 0x9, in its romtable, there are two entries:

  • 0xb, which is strange because it is marked as present (0b11) but offset is zero which is prohibited.
  • 0x1, which means present value is 0b01, which is reserved.

ETM (0xE0041000) class type is 0x9, in its romtable, there is an entry:

  • 0x411, which again has a present value of 0b01, which is reserved.

Am I mistaken or anyone can give insight what these are ?

Best regards,

Mete

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