From: hoffman@xdelta.zko.dec.nospam
Sent: Wednesday, July 28, 1999 5:02 PM
To: Info-VAX@Mvb.Saic.Com
Subject: Re: OpenVMS 7.2 hobbyist - VAXstation 4000 VLC (was Re: OpenVMS
7.2 Hobbiest - Vaxstation 4000VLC


In article <7nnh0i$c35$1@bgtnsc02.worldnet.att.net>, pdp11@worldnet.att.net (Max) writes:
:... Question, how do I do a root 1 boot?
:I.E. I just type boot DKA400: at the >> prompt to get
:the StandAlone Backup.

  To boot from DKA400:[SYS1], use:

    >>> b/r5:10000000 dka400

  Search for "conversational" in the FAQ for some other options.

  I would also encourage you to take a look at the OpenVMS VAX installation 
  manual and the OpenVMS system management documentation...  You can skim
  these documents online at:

    http://www.openvms.digital.com:8000/

  Here's a (very old) list of the VAX VMB R5 bits (from the VAX-11/780 
  console floppy) that I had handy...

        R5  -  Software Boot Control flags

                Bit     Meaning
                ---     -------

                 0      RPB$V_CONV
                        Conversational boot. At various points in the
                        system boot procedure, the bootstrap code
                        solicits parameter and other input from the
                        console terminal.  If the DIAG is also on then
                        the diagnostic supervisor should enter "MENU"
                        mode and prompt user for the devices to test.

                 1      RPB$V_DEBUG
                        Debug.  If this flag is set, VMS maps the code
                        for the XDELTA debugger into the system page
                        tables of the runing system.

                 2      RPB$V_INIBPT
                        Initial breakpoint. If RPB$V_DEBUG is set, VMS
                        executes a BPT instruction immediately after
                        exabling mapping.

                 3      RPB$V_BBLOCK
                        Secondary boot from the boot block.  Secondary
                        bootstrap is a single 512-byte block, whose LBN
                        is specified in R4.

                 4      RPB$V_DIAG
                        Diagnostic boot.  Secondary bootstrap is image
                        called [SYSMAINT]DIAGBOOT.EXE.

                 5      RPB$V_BOOBPT
                        Bootstrap breakpoint. Stops the primary and
                        secondary bootstraps with a breakpoint
                        instruction before testing memory.

                 6      RPB$V_HEADER
                        Image header. Takes the transfer address of the
                        secondary bootstrap image from that file's
                        image header.  If RPB$V_HEADER is not set,
                        transfers control to the first byte of the
                        secondary boot file.

                 7      RPB$V_NOTEST
                        Memory test inhibit. Sets a bit in the PFN bit
                        map for each page of memory present.  Does not
                        test the memory.

                 8      RPB$V_SOLICT
                        File name. VMB prompts for the name of a
                        secondary bootstrap file.

                 9      RPB$V_HALT
                        Halt before transfer.  Executes a HALT
                        instruction before transferring control
                        to the secondary bootstrap.

                10      RPB$V_NOPFND
                        No PFN deletion (not implemented; intended to
                        tell VMB not to read a file from the boot device
                        that identifies bad or reserved memory pages,
                        so that VMB does not mark these pages as valid
                        in the PFN bitmap).

                11      RPB$V_MPM
                        Specifies that multi-port memory is to be used
                        for the total exec memory requirement.  No local
                        memory is to be used.  This is for tightly-coupled
                        multi-processing.  If the DIAG is also on, then
                        the diagnostic supervisor enters "AUTOTEST" mode.

                12      RPB$V_USEMPM
                        Specifies that multi-port memory should be used in
                        addition to local memory, as though both were one
                        single pool of pages.

                13      RPB$V_MEMTEST
                        Specifies that a more extensive algorithm be used
                        when testing main memory for hardware uncorrect-
                        able (RDS) errors.

                14      RPB$V_FINDMEM
                        Requests use of MA780 memory if MS780 is insuffci-
                        ent for booting.  Used for 11/782 installations.

                <31:28> RPB$V_TOPSYS
                        Specifies the top level directory number for
                        system disks with multiple systems.

 --------------------------- pure personal opinion ---------------------------
   Hoff (Stephen) Hoffman   OpenVMS Engineering   hoffman#xdelta.zko.dec.com