Add a variable time_res

wtfstopw.asm

 	startmsglen: equ $ - startmsg
 
 	hours: db "000000000"
-	timestr: db ":00:00.0000    ", 0x0a
+	timestr: db ":00:00.0           ", 0x0a
 	timestrlen: equ $ - timestr
 
+	time_res: dq 3 ; 3 digits bellow seconds
+
 	nl: db 0x0A
 	buf: db 0
 
 	sub rbx, 1
 	mov [ts_cur.tv_sec], rbx
 	print_time_us_cont:
+	
+	; Divide result given time_res
+	mov r10, rax
+	mov rax, 1000000000
+	mov r9, [time_res]
+	mov r8, 10
+	xor rdx, rdx
+	print_time_respow:
+		div r8
+		sub r9, 1
+		cmp r9, 0
+		jg print_time_respow
+	mov rcx, rax
+	mov rax, r10
 	xor rdx, rdx
-	mov rcx, 100000
 	div rcx
+
 	; set the us char in timestr
 	mov r8, timestr
-	add r8, 10 ; r8 points on last char before \r
-	mov r9, 4 ; r9 count the number of digits
+	mov r9, [time_res] ; r9 count the number of digits
+	add r8, 6 ; first digits after seconds
+	add r8, r9 ; r8 points on last char before \r
 	print_time_us_loop:
 		xor rdx, rdx
 		mov rcx, 10