alt Hacker Newswonders how ARM did that - the MIPS R2000 came in at ~115k and the 80286 ~134k
anyway - say you want 50% of the transistors for on chip RAM these days, then thats
100 billion / 50 thousand = 2 million ARM 1s
clocking at say 3GHz
6e15 MIPS = 6 peta MIPS
so if you could run code on it, you would get a 10,000x speed up ;-)
Replies
tyingq • today at 12:37 PM
A fairly deep dive into it
https://www.righto.com/2015/12/reverse-engineering-arm1-ance...
icelusxl • today at 3:54 PM
ARM1 has no cache memory, no hardware multiply and division, no MMU and no cache.
> wonders how ARM did that
Acorn co-founder Hermann Hauser famously joked that he gave the original ARM microchip design team two distinct advantages: no time and no resources. With no money for a large crew or complex hardware, the tiny core team had to keep the processor design exceptionally simple, which ultimately birthed the revolutionary RISC architecture.
It also had to run in simulation on a BBC micro… Probably with a second processor via the Tube interface, but still.