yet another PlayStationPortable Documentation

5 Media Engine

Video RAM appears to be inaccessable, at least at the usual address. (there is something mapped at 0x04000000 ?, appears to be mmio and not ram)
I/O seems to be accessable (unconfirmed)
looks like the exception handler location is set by loading cop0 register 25 (usually perfcnt) with the address of your handler
INT 31 catches the ME irq on the main core

start	end	size	description
`0x00000000`	`0x001fffff`	2mb	ME internal RAM
`0x08000000`	`0x09ffffff`	32mb	Main Memory
`0x1fc00000`	`0x1fcfffff`	1mb	Hardware Exception Vectors (RAM)

start	end	size	description
`0x80000000`	`0x801fffff`	2mb	ME internal RAM
`0x88000000`	`0x89ffffff`	32mb	Main Memory
`0xbfc00000`	`0xbfcfffff`	1mb	Hardware Exception Vectors (RAM)

0
1
2
3
4
5
6
7
8	r	badvaddr	virtual address of last error/exception
9	r/w	count	system counter
10
11	r/w	compare	counter comparison value
12	r/w	status	system status
13	r/w	cause	exception cause
14	r/w	EPC	exception program counter
15	r	prid	processor revision id
16	r	config	configuration
17
18
19
20
21		SC-code	SC-code < < 2
22			CPU ID (0=Main, 1=ME)
23
24	?	?	?
25	r/w	Ebase	virtual address of exception vector
26
27
28	r/w	TagLo	cache instruction register
29	r/w	TagHi	cache instruction register
30	r/w	ErrorEPC	error exception program counter
31