the registers OCR1BL0:OCR1BL7, OCR1BH0:OCR1BH7, OCR3BL0:OCR3BL7 and OCR3AH0:OCR3AH7 are missing from the header file and where they should be defined there are the registers with the names *A*n instead of *B*n defined. (lines 693-710 and 802-819)

I'm not sure if the same code was copy-pasted to/from some other header files because I have only looked at this file so far. I noticed this because it redefined an already existing define for all the A values with the same value.

What I also noticed but where I don't know if it's an issue: OCR2_0:OCR2_7 is also defined twice. (once below OCR2A and once below OCR2B) I'm not sure if this was intended because all other memory addresses usually have a different naming and in the data sheet in 17.11.4 OCR2A – Output Compare Register A and 17.11.5 OCR2A – Output Compare Register B they are named OCR2A[7:0] and OCR2B[7:0] respectively instead of OCR2[7:0] (though changing these might break programs relying on those defines)

I have also attached a patch (diff -rupN) which fixes the naming of the macros mentioned in the bug title here but not the OCR2_n macros.