Quote Originally Posted by asensio12 View Post
I have version 3.3, is in a 27128 eprom and works in older versions of ST01/02 cards. Desoldered
v3.3 from the original card, make an eprom copy, put the copy in an old ST01/02 card and works well.
Not to be a Doubting Thomas, but there is a 20-pin PAL/GAL chip on the v3.3 ST01 that is lacking on the earlier cards. Certainly, something can't be working properly...?