Re: looking for some doc about what z/OS displays on a tape drive
Thanks all, I found what I was looking for in an old copy of IBM 3480 Magnetic Tape Subsystem User's Reference GC35-0099-3 under the section that talks about the MSGDISP macro. It actually had a figure that described CSECT IGXMSG01 that validated what I thought I knew. Tony Thigpen Alan Altmark wrote on 7/21/21 7:47 AM: On Tue, 20 Jul 2021 10:03:18 -0400, Tony Thigpen wrote: Is there actually any real IBM doc that describes what may be displayed by z/OS on the little display on a 3480/3490/3590 tape drive? Yes. I'm looking at a copy of the IBM 3490 Hardware Reference, GA32-0127. The Load Display CCW supports (from any OS, not just z/OS): A-Z 0-9 # $ @ , . / ' ( ) * & + - = ¢ % | : _ < > ? ; Any service that z/OS provides that allows an application to interact with the display may be more restrictive. The display consists of two 8-character messages. If, how, and when those messages are displayed is the subject of a control character that the host sends along with the messages. There is at least one VTS-style product on the market that uses the displayed value as the requested volser whenever the message includes the control to index the (virtual) autoloader. This allows systems without DFSMS and 'modern' library controls to still be able to request a tape mount from the emulated library. Alan Altmark IBM -- 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
Re: looking for some doc about what z/OS displays on a tape drive
On Tue, 20 Jul 2021 10:03:18 -0400, Tony Thigpen wrote: >Is there actually any real IBM doc that describes what may be displayed >by z/OS on the little display on a 3480/3490/3590 tape drive? Yes. I'm looking at a copy of the IBM 3490 Hardware Reference, GA32-0127. The Load Display CCW supports (from any OS, not just z/OS): A-Z 0-9 # $ @ , . / ' ( ) * & + - = ¢ % | : _ < > ? ; Any service that z/OS provides that allows an application to interact with the display may be more restrictive. The display consists of two 8-character messages. If, how, and when those messages are displayed is the subject of a control character that the host sends along with the messages. There is at least one VTS-style product on the market that uses the displayed value as the requested volser whenever the message includes the control to index the (virtual) autoloader. This allows systems without DFSMS and 'modern' library controls to still be able to request a tape mount from the emulated library. Alan Altmark IBM -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: looking for some doc about what z/OS displays on a tape drive
The 3480 Operator's Guide doesn't seem to be online and that. I think, is the most likely complete source. The reference guide (which has examples of common messages) is available on bitsavers and there is a WSC bulletin on computinghistory.org.uk which describes the functions of the message display but is not an exhaustive list. The latter points out that there are hardware-generated messages such as REWINDNG, UNLOADNG, LOCATNG (or maybe LOCATING), CLEAN and CHK xy, and there are z/OS-generated message such as the mount/keep messages and the display of the mounted volser. Tape library management systems also used the display for things like rack numbers. Stand-alone dump did, too. On Tue, 20 Jul 2021 at 15:03, Tony Thigpen wrote: > Is there actually any real IBM doc that describes what may be displayed > by z/OS on the little display on a 3480/3490/3590 tape drive? > > > > Tony Thigpen > > -- > 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
Re: looking for some doc about what z/OS displays on a tape drive
Probably have to start with the hardware manual. Charles -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Tony Thigpen Sent: Tuesday, July 20, 2021 7:03 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: looking for some doc about what z/OS displays on a tape drive Is there actually any real IBM doc that describes what may be displayed by z/OS on the little display on a 3480/3490/3590 tape drive? Tony Thigpen -- 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
looking for some doc about what z/OS displays on a tape drive
Is there actually any real IBM doc that describes what may be displayed by z/OS on the little display on a 3480/3490/3590 tape drive? Tony Thigpen -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
