[rescue] [OT] S: IBM /370 or /390 card

[Dave McGuire]

On 9/12/23 17:03, Lionel Peterson via rescue wrote:
> That just doesn't sound right - if IBM could make a meaningful 370 mainframe with the 68000 CPU, why would they continue using all those zillionsvof 'modules' to build up a mainframe? Tradition?

   Speed.  The XT/370 is slower than pissing tar.

> The I/O system in a mainframe is where the value is, not the CPU (for common business applications, not scientific computations)...

   Eh, not quite.  CPU performance is very important in a mainframe, but 
I/O is also very important, sometimes more so, and more frequently more 
so than in the rest of the world.

            -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA