Just a detail from latest revision.
If no internal TLB matches the current access, the MMU needs to find elsewhere the mapping information.
The MMU slices memory in pages.
Now it’s time to describe the memory management unit and cache, glued together in the “MCU”.
Let’s begin with the MMU.
First, there are two kinds of multipliers and dividers in our CPU, the integer and the floating point ones. They are a bit different.
SPARC CPUs use condition codes, the famous NZVC bits (Negative, Zero, ‘Verflow and Carry).
Some instructions last more than one cycle, even on RISC CPUs.
Integer registers are read at the beginning of the EXECUTE stage and are updated at the end of the WRITE stage.
There are many circumstances where a CPU may halt and jump to an exception vector:
This is the traditional RISC implementation, the one you find in hundreds of CPU cores, thousands of books, millions of computer architecture courses, gazillions chips.