At 20:55 -0500 on 02/20/2007, Thompson, Steve wrote about Re: IBM
S/360 series operating systems history:
I had a friend
who worked for Holiday Inns at Holiday City in Memphis back about 1977
where they were still running TOS (I think he had 128K) with 2311 disk
drives (if I remember the model correctly). I do not know if they
supported ISAM, BDAM or just SAM back then (what a waste of DASD if they
could only do SAM).
IMPOSSIBLE. TOS did not have ANY DASD support (it was a TAPE ONLY
system with no DASD DTFs or xxMOD macros [although you could in
theory add them by copying them from a DOS system so you could
assemble your program] nor any support to access DASD from user
programs). If you wanted DASD support, you needed to switch to DOS
which had the DASD IO support, Macros, and had a DASD SYSRES.
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