Re: Cycles per ASM instruction

hancock4@[EMAIL PROTECTED]
 wrote:
> On Feb 21, 12:32 am, Arthur T. <art...@[EMAIL PROTECTED]
> wrote:
>>      I remember seeing them for the 370/115.  It's hard to forget
>> that moving from a 360/22 to a 370/115 gave us a CVD timing worse
>> by one to two orders of magnitude.  IIRC, the number of cycles for
>> that instruction was approx 250.
> 
> 
> Are you saying the 370-115 was slower than the 360-22?  (I didn't even
> know there was a model 22).

The 22s were the last 360 announced, and were simply recycled 30s, 
introduced after the S/370 135 came out and 30s were being returned in 
great numbers, but before the 115 and 125 were ready. The 115 and 125 
were microcoded up the wazoo, so it's easily imaginable that they were 
slower than the 30/22.

-- 
John W. Kennedy
"The blind rulers of Logres
Nourished the land on a fallacy of rational virtue."
   -- Charles Williams.  "Taliessin through Logres: Prelude"