21 Sep
2023
21 Sep
'23
12:24 a.m.
Group,
Ive got a tape here from what I believe to be a VM system. The
structure is unknown to me, although I can possibly take a stab at it.
Lots of data between tapemarks that seems to consist of a number of
records that start out something like this (translated from EBCIDC):
00000000 02 43 4d 53 46 30 30 30 31 31 32 30 35 31
31 32 |.CMSF00011205112|
00000010 34 37 30 37 36 30 31 32 32 32 31 31 30 31 31 31 |4707601222110111|
Another example:
00000000 02 43 4d 53 46 44 41 54 41 20 5f 4e 55 4c
4c 5f |.CMSFDATA _NULL_|
00000010 3b 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |; |
00000020 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
The data itself appears to be a bunch of 80 character card images.
I found a mention on the old yahoo groups H390-VM discussions, but no
clarity was ever shed on the subject.
Does anyone know about this tape format?
--Chuck