Program Counter Flashcards
1
Q
Program Counter:
A
2
Q
When in Thumb mode:
A
Instructions are 16 bits wide.
All instructions must be halfword-aligned.
The PC is in bits [31:1] and bit 0 is undefined.
3
Q
“word” and “halfword” mean?
A
4-byte and 2-byte quantities respectively.
4
Q
when in Jazelle mode:
A
Instructions are 8 bits wide.
Four are fetched at a time.
5
Q
A
