Has anyone tried the "two transistor interface" with Datamaster"? I have used it with other applications and Datamaster and it worked fine but did not have luck with 749 ECM.
Thanks, I will give that a shot. Just check "Disable CCM Handshake" right?
Did you find that you had to mess with the Serial Communication Timing any? I am running an older P1 Thinkpad 770 witn Win98.l
I got it setup a long time ago and haven't looked at the settings since. I don't think I even had to disable the handshaking thing, just tweak the timing to something between 190 and 200...