implemented SETTMO routine, some documentation updates

c64/aliases/,aliases_ram_lowmem.s

@@ -60,6 +60,8 @@
 	.alias MEMSTR     $281
 	.alias MEMSIZ     $283 ; NOTE: Mapping the 64 erroniously has the hex as $282, while the DEC is correct
 
+	.alias TIMOUT     $285 ; IEEE-488 timeout
+
 	.alias HIBASE     $288 ; high byte of start of screen
 
 	.alias RSSTAT     $297 ; RS-232 status

c64/kernal/settmo.s

@@ -9,4 +9,5 @@
 ;;
 
 settmo:
+	sta TIMOUT
 	rts