Lindy, I have to agree with Rob, at a minimum read the Extended Addressability manual, it is a good place to start on ALET's and STOKEN's. Basically an STOKEN is a 64 bit IPL span unique identifier for a SPACE (address, data or hiper) in z/OS. An ALET is a value that is used to "link" two spaces together via synchronous cross memory, and is loaded into an access register (AR) to allow one to access another space. One requirement is that if the target space is an address, or a dataspace owned by another address space, then the target address space or owning address space needs to be non-swappable for the duration of the operation. While this project is somewhat less work than your prior ones, it is still a big swamp full of hungry croc's that you are wading into (with apologies to Chris Craddock for shamelessly stealing a warning). There are a number of us who have dug into this and have some scars, some worn proudly, others hidden away as deeply as we can.
Wayne Driscoll Product Developer NOTE: All opinions are strictly my own. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Rob Scott Sent: Friday, August 22, 2008 3:08 PM To: [email protected] Subject: Re: Trying to figure out IEAMSCHD If that is the case - I think you might be trying to run before you can walk. I think you be better served, perhaps, writing yourself a program to store and access data in a dataspace before you start playing with SRBs - the MVS Extended Addressability manual is a good place to start. Once you are familiar with that style of cross-memory programming (it will get you used to STOKENs, ALETs, access regs etc etc) - then perhaps you will be more comfortable with what is required for SRB routines. Rob Scott Rocket Software, Inc 275 Grove Street Newton, MA 02466 617-614-2305 [EMAIL PROTECTED] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Lindy Mayfield Sent: 22 August 2008 21:01 To: [email protected] Subject: Re: Trying to figure out IEAMSCHD Another thing that isn't helping, I'm only slightly embarrassed to say, is I don't know yet what an STOKEN or an ALET is. I'm trying. Not easy because so many hits in the docs. (-: -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Edward Jaffe Sent: 22. elokuuta 2008 22:07 To: [email protected] Subject: Re: Trying to figure out IEAMSCHD Lindy Mayfield wrote: > Which parameter on IEAMSCHD tells it the address space it is to run in? > Why not RTFM? TARGETSTOKEN=xtargetstoken is the name (RS-type), or address in register (2)-(12), of a required 64 bit input which contains the Space Token (STOKEN) of the address space in which the SRB routine is to receive control. ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
