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Reading Assembly Language Code

Reading Assembly Language Code

Reading Assembly Language Code

The following lines are loaded into the reset vector of a M16C processor:

0FFFFC 2187                 ADD.B -121[SB], R0L
0FFFFE 0E00                 MOV.B 0[FB], R0H      

It has been years since I have worked with assembly code and I am struggling to figure out how these two lines of code can point me to the lines of code that are executed upon a reset.  I understand the lines will load two values into the two R0 bytes, but I don't understand 1) how the values (addresses) loaded into R0 will give the address of the code executed upon a reset and 2) how to find the values in the Frame Pointer or the Static Base register (with offset) can be known.

Any help would be greatly appreciated.



RE: Reading Assembly Language Code

It's a vector, not a set of instructions.
Disassemble from 0x0E002187 instead.


If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.

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