In <[EMAIL PROTECTED]>, on 04/11/2007
at 08:05 AM, IBMsysProg <[EMAIL PROTECTED]> said:
>ISAM or Indexed Sequential Access Method was about the second access
>method produced by IBM for data storage and retrieval especially for
>new fangled devices called disk drives
FSVO newfangled; IBM's first mainstream disk drive was the RAMAC, back
in the 1950s.
>sometimes known as DASD
Thats a common misconceptions; disk drives are DASD's, but not every
DASD is a disk drive. Take the data cell - please!
>The 360 instruction set was the worst for speed.
On what do you base that claim?
>Some instructions like load would take a very small number of cycles
>and some like MVCL could take hundreds or thousands.
Well, other than the fact that MVCL did not even exist on the S/360,
how many cycles would you expect it to take to move millions of bytes?
An MVCL of, e.g., 10 bytes did not take "hundreds or thousands".
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
ISO position; see <http://patriot.net/~shmuel/resume/brief.html>
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)
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