Both BALR and BASR change all bits of the link register. ICM with a mask of 7, however, does not alter bits 0-7.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of Joseph Reichman [reichman...@gmail.com] Sent: Sunday, February 19, 2023 9:38 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: BSAM Read 31 bit mode My mistake was the BALR in AMODE 31 doesn't kill bits 1 - 7 thanks -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Binyamin Dissen Sent: Sunday, February 19, 2023 5:16 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: BSAM Read 31 bit mode The fact that your code is AMODE 31 does not mean that the access method MUST be above the line. The actual expansion had an XR 15,15 before the ICM. Why do you think that there is an issue? BALR does not change the AMODE. On Fri, 17 Feb 2023 15:35:35 -0500 Joseph Reichman <reichman...@gmail.com> wrote: :>Hi :> :> :> :>I see this documentation from IBM :> :> :> :>Addressing mode: When you issue the READ macro in 24-bit mode, provide only :>24-bit addresses unless you code SF64 or SF64P. When you issue the READ :>macro in 31-bit addressing mode, provide only 31-bit addresses unless :>documentation says otherwise or you code SF64 or SF64P. With SF64 or SF64P, :>the data area can reside above the 2 GB bar but you cannot issue READ in :>64-bit mode. :> :> :> :> :> :>And yet my read macro expands to ICM 15,B'0111',49(R6) :> :> BALR 14,15 :> :> :> :>Does the address mode paragraph then mean AMODE 31 RMODE 24 :> :> :> :> :> :>In Addition the synad exit :> :> :> :>Which has :> :> :> :>Table 58. Register contents on entry to SYNAD routine-BDAM, BPAM, BSAM, and :>QSAM Register Bits Meaning 0 0-7 Value to be added to the status indicator's :>address to provide the address of the first CCW (QSAM only). Value may be :>zero, meaning unavailable, if LBI is used. Using Non-VSAM User-Written Exit :>Routines 494 z/OS: z/OS DFSMS Using Data Sets Table 58. Register contents :>on entry to SYNAD routine-BDAM, BPAM, BSAM, and QSAM (continued) Register :>Bits Meaning :> :> :> :>8-31 Address of the associated data event control block for BDAM, BPAM, and :>BSAM unless bit 2 of register 1 is on; address of the status indicators :>shown in Figure 109 on page 491 for QSAM. If bit 2 of register 1 is on, the :>failure occurred in CNTRL, POINT, or BSP and this field contains the address :>on an internal BSAM ECB :> :> :> :>Does this mean The DECB has to be AMODE 24 :> :> :> :>Thanks :> :> :>---------------------------------------------------------------------- :>For IBM-MAIN subscribe / signoff / archive access instructions, :>send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- Binyamin Dissen <bdis...@dissensoftware.com> http://secure-web.cisco.com/13hbCrLlhji1mE1QcrvOfhv220KW1Zbxc753wJYo9J6fI6SSH4j4xbkROG3VX4x1gpt7mCqN4G8oMrCFgaKuUI3BQnPlEKy_brLCZmDkRAXsa3hz1Vhie_a63QG5TuyjONJ6U2_r09JZ6I_piAF-_qr9v2ZFSc0xv6W-w_k8Pkoljr5mbtMhUg1XHb6HTqz4Hp6wsKPwpR-DkqDNB8O4CnjZTUc6d2fFrWlbjs6Ahl-7nhdDsumi8j0VoQIy9J6oJQ0V8lLeWdZrhxYIkaXei1H62qt8yuBJARAIuJ77F15muF8wbVFVaxtymYI7bpJ7J5zr_Omk_MSvbV_A9ZvLy0QaeUzFraZOxt8yYWi7wCb1ZcDVXI2Ub9gYV5g8kC_IIGS87GSTsfxQy25_8Aq0AaD7DhjGN-FKHGDD14odIDVqK8kGQmmC-wUEjI2VU9x8r/http%3A%2F%2Fwww.dissensoftware.com Director, Dissen Software, Bar & Grill - Israel ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
