On 3/27/2013 11:20 AM, Paul Gilmartin wrote:
Survey question: Has any reader here ever coded in JCL a PARM for which the called program required alignment? (I heard long ago of an F+2 alignment to satisfy S/360 specifications.)
For OS/360, just about every program relied on half-word alignment of the length field, but I also saw ones using IC. But since (or despite) the S/370 changed some alignment requirements to recommendations, I've been using ICM. And in forty-odd years, I've never run across code that required or expected other alignments.
If that's universally true, then the maximum length could be 32766, even keeping OBTAIN/GETMAIN length a half-word, as the system returns 32768 bytes for a 32767 request.
Gerhard Postpischil Bradford, Vermont ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
