Sorry to bump this up again, but I just ran into something strange.
I’m still trying to figure out the exact hex address where the CLUT begins in WALL.PSX. So I loaded WALL.PSX into TM, and when I scroll down enough, I start seeing the CLUT at around 178000:

However, when I use TM’s “Go To…†option to jump to the hex address 178001, the CLUT looks weird all of a sudden:

What does this mean? Does the CLUT really begin at 178000, 178001, or some other address? I also noticed that there are some pixels above the “178000†line.
Moreover, in my VRAM snap the CLUT has the dimensions of 64 x 286. Does this mean the CLUT is 18304 bytes (64*286=18304)?