colbert@unc.UUCP (Darylene Colbert) (01/15/85)
<> For some reason the 3270 PC loses incoming data from the RS232 port when a BIOS call is made to change the displa to medium resolution graphics mode (I have the APA card). I have tested my interrupt-driven program on 3 different 3270 PC's and all share the problem. The same program works fine on a PC/XT. It appears that approximately 40ms worth of data is lost when the call is made. Does anyone have a clue to what is going on and what I can do to get around it? Thanks. Edmund Burnette :wq