Paul/John Thank you for your prompt answer. I do have SNA formats. I will try to search for the other books.
For the time being I will compare the 2 bytes of ru+1 for x'0502', and if yes, I will check if it is x'0502FF', to be sure that it is the attach request ... I hope I will not find in the future that the x'0502FF' sequence may appear when the bit in the RHFI bit is on, and it is not an attach .... I'm grateful for your help ... I will try to find the licensed book more thouroughly in resource link. Mauri. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
