In <[email protected]>, on 01/31/2014 at 04:33 PM, Charles Mills <[email protected]> said:
>I have finally come to terms with that concept. When I started out, >on a S/360 40, it came with a book >(http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/360/funcChar/A22-6881-2_360-40_funcChar.pdf) >that had the exact timing for each opcode. Most RR instructions were >7.5us and most RX instructions were ~12us. IBM published timing manuals for most S/360 and S/370 processors, but the more advanced the machines the more complicated the timing formula. After a while it didn't really make sense to publish them, since they would have been to complex for practical use. -- 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) ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
