>And presumably the EODAD address has to be a 24 bit address also since >the DCB has other info in the leftmost byte of that word.
No. There are fullword fields in the DCBE to hold EOEAD and SYNAD routine addresses. DCBE fields take preprecedence over the corresponding DBC fields. Peter Hunkeler CREDIT SUISSE ---------------------------------------------------------------------- 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

