' p l l ' ' o J o r i l o a I H i r n . d J o i L I a S L I O O U 0 1 i I H m s s a i d x a a i n o L I l i h i s o s o d i n d a u U n i o e J n u M m a L I l i o J p a s n i o u i l i e d p I l i i u e j o a s n a L I l i o J i a , \ a o s i P H M i i r i M i L U P U ! p a s o I o s l P i o ' l u a I ' p a l d o o ' p a o n p o i d a i J a L l l l a u a q I I e L l s i a H L ' p i I " o j o u l o a I g l r n d J O i L l l o d o l d O L I l S I u i a i a L I u o i l e t u i o j u i O L I l p u P T e y a l e r u s u I L
| MPU SEL | MCS | BHE | A<O> | HWR | LWR | Upper byte | Lower byte | Valid data bus width of MPU |
| H | L | L | L | H | L | Write | Write | 1 6-bit |
| H | I ¨nvalid | I ¨nvalid | |
| | L | Write | I ¨nvalid | Upper 8-bit |
| H | H | I ¨nvalid | I ¨nvalid | |
| | L | L | I ¨nvalid | Write | Lower 8-bit |
| H | H | I ¨nvalid | I ¨nvalid | |
| | L | I ¨nvalid | Write | Lower 8-bit |
| H | H | | | |
| H | X | X | X | Invalid | Invalid |
| | | | | | | | |