Viewing posts from February, 2012
Let's continue REing the branch instructions.
Today my goal is to look into an issue I've briefly mentioned at the beginning, but ignored afterwards: the code fetch and execution process.
Today's aim is to RE the remaining $a-related opcodes. That is, boring but required stuff before we can get to looking at the microcode.
No obvious place to go now. Let's try some statistical analysis. We'll count how many times each opcode [as distinguished by top 8 bits] is used.
Today's first idea is to look at the VP1's MMIO registers to see if we can run some test code.