[comp.sys.ibm.pc] SDLC

smith@enea.UUCP (02/18/87)

Can anyone tell me where to find

a) Plug-in RS-422 interface HW for a PC/AT

b) IBM Syncronus Data Link Control (SDLC) communication
   protocol in source code for PC/AT

Please mail me since I'm not reading the news very often.