Hi, i've discovered that my old msx1 sony hb 10p has a failure detecting keypress on some keys.
for example 'b','r','7',';' does not detect keypress.
i suspect is a failure in some column / row hw line or worse, a problem in PPI ?
anyone know if those keys share a common row or column?
i've discovered that there is an approximate n. of keys not working. the rate is 1 key dead every 8 keys.
Login or register to post comments

but test PB7 to be certain about it:
is this the end of my msx?