to get the EAS software to talk to my P38 I had to adjust the "One Byte Delay" the "Two Byte Delay" and the "Idle Delay"
The settings that worked for me are: "One Byte Delay" = 375 Two Byte Delay = 375
Idle Delay = 75
These settings will vary with I think the speed of your computer. Change one at a time just a little and then restart the software each time. IE change One Byte Delay a little then resart, if no sync, same for Two Byte Delay same for Idle Delay. It's a bit like looking for a needle in a haystack, took me 20 minutes to get sync.