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

[Mike Katz]

You answered your own question.  The I/O system (the Channel 
Architecture) and I'm sure the big iron 370's where more powerful than 
the re-microcoded 68000's.  Cycle speed, pipeline, cache, etc.

On 9/12/2023 4:03 PM, 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?
>
> The I/O system in a mainframe is where the value is, not the CPU (for common business applications, not scientific computations)...
>
> Ken
>
>> On Sep 12, 2023, at 15:25, Mike Katz via rescue <rescue at sunhelp.org> wrote:
>>
>> Supposedly one of the reasons that the original PC used an Intel 4.77mHz 8-bit bus 8088 was that the 8MHz 16-bit bus 68000 was more powerful than an entry level 360.  I don't know about a 68008 (8-bit bus version of the 68000).
> _______________________________________________
> rescue list - http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org