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From: David Schultz <david.schultz@earthlink.net>
Subject: Re: What do we call non-pipelined designs?
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On 12/8/24 9:43 PM, Lawrence D'Oliveiro wrote:
> On Sun, 8 Dec 2024 23:05:40 +0000, MitchAlsup1 wrote:
> 
>> Why, in this day and age, would anyone want to even consider doing
>> something less pipelined than that ?!?!?
> 
> Here’s one reason (tell me if I’m wrong): I remember some CPU designs used
> CMOS and probably some other hardware magic I don’t understand to create
> chips that could run at any speed down to 0Hz.
> 
It required zero hardware magic. It was a design choice.

A dynamic latch required fewer transistors (area) but imposed a minimum 
clock speed to keep the stored charge from leaking away to uselessness. 
A static latch had no minimum speed but required more transistors.

In those early days with CPU transistor counts in the thousands, dynamic 
latches were a good and fairly common choice.

-- 
http://davesrocketworks.com
David Schultz