Hi John
The problem is the data does not stay valid long enough after pWR* goes high.
It is discussed on pages 335-337 of book. Also the 8255 requires the data be
valid at least 30 nsecs after write signal goes high. The same type of issues
occur on propeller and IDE select on the IDE board.
Yeah - I looked on the ISSI site and they are only BGA it looks - I did not
realize that Mouser would make a mistake like that. I am not a proponent of
BGAs but this is an interesting video using a hot air gun to solder them
http://www.xess.com/blog/mounting-a-bga-on-a-pcb-quickly-and-cheaply/
