; make sure current run-mode is kernel and previous is user
	MOV	#0177776,R0
	MOV	#030000,(R0)
	NOP

; initialize kernel- and user stackpointers
; kernel
	MOV	#1000,R6
;; user
;	MOV	#0177717,R0
;	MOV	#1000,(R0)

; user: 060000-080000 will be mapped to physical address 020000
	MOV	#0177646,R0
; 020000 / 0100 (0100 => 64 decimal)
	MOV	#0200,(R0)
	NOP

; user: make sure write- and read-access is possible
	MOV	#0177606,R0
	MOV	#077406,(R0)

; kernel: flat mapping
; 0-010000 -> 0
	MOV	#0172340,R0
	MOV	#0000,(R0)
; 060000-0100000 -> 060000
	MOV	#0172346,R0
	MOV	#0600,(R0)
	NOP

; kernel: make sure write- and read-access is possible
; 0-010000
	MOV	#0172300,R0
	MOV	#077406,(R0)
; 060000-0100000
	MOV	#0172306,R0
	MOV	#077406,(R0)

; place a value at 020000 kernelspace which is
; 060000 in userspace
	MOV	#020000,R0
	MOV	#01234,(R0)

; MRR0
	MOV	#0177572,R0
; enable MMU traps
	BIS	#512,(R0)
; enable MMU
	BIS	#1,(R0)

; get word from 060000 in userspace and put that on
; the kernel stack
	MOV	#060000,R0
	MFPI	(R0)
	NOP

; check for 01234
	MOV	(SP)+,R0
	CMP	#01234,R0
	NOP

	HALT

	make_raw