On 2019-04-04 22:21, Paul Koning wrote:
That looks like standard RMS:VAR records, implied carriage control.  That 
means: each line is preceded by a 2 byte little endian length, and line ends 
are not actually in the file but implicit between each line.

No. It looks a little more complicated than that.
It's certainly variable length records as you say. However, after the size is the record number, and after that comes the data.

Relative file with variable length records maybe?

  Johnny


        paul

On Mar 26, 2019, at 5:54 PM, Ron Young <[email protected]> wrote:

Hi All:

   I want to load some programs from the vax82b decus "tape" into my
   simh/vax/vms 7.3 system. VMS is installed and running.

   I normally would download the tape image and mount it in simh/vms and
   copy/restore. Unfortunately, I can't find any tape images for vax82b.
   There are zip files located on
   https://eisner.decus.org/repository/master/vms/library/.

   However when I ftp the files over to vms, the record type is messed up
   (displays 2 bytes of "garbage" and doesn't see the end of line). Looking
   at a linux dump of the first couple of lines (shown below).

   Any ideas on how I can fix this, or where tapes images are located?

   thanks
   -ron


$ od -ao --endian=little apl.v30 | more
0000000   , nul soh nul  ht   P   R   O   G   R   A   M  sp  sp  sp  sp
         000054  000001  050011  047522  051107  046501  020040  020040
0000020   a   p   l  sp   !   !   V   e   r  sp   3   .   0   ,  sp   F
         070141  020154  020441  062526  020162  027063  026060  043040
0000040   a   l   l  sp   1   9   8   2  sp   D   E   C   U   S  gs nul
         066141  020154  034461  031070  042040  041505  051525  000035
0000060 stx nul   c   +  ht  ht   M   a   i   n  sp   A   P   L  sp   d
         000002  025543  004411  060515  067151  040440  046120  062040
0000100   r   i   v   e   r  sp   p   r   o   g   r   a   m nul eot nul
         064562  062566  020162  071160  063557  060562  000155  000004
0000120 etx nul   c   ;   , nul eot nul   c   ;  ht   I   n   i   t   a
         000003  035543  000054  000004  035543  044411  064556  060564
                                                
===============================================================================
Ron Young                               [email protected]
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                                  ||  on a psychedelic trip
email: [email protected]             ||  Reading murder books
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