He talks about it for microcontrollers but conveniently ignores a whole range of CPUs between this class and OoO because they don't fit his argument. eg from Wiki:
> The Cortex-A53 is the most widely used architecture for mobile SoCs since 2014 to the present day, making it one of the longest-running ARM processors for mobile devices. It is currently featured in most entry-level and lower mid-range SoCs, while higher-end SoCs used the newer ARM Cortex-A55. The latest SoCs still using the Cortex-A53 are MediaTek Helio G37, both of which are entry-level SoCs designed for budget smartphones.
These may not be the most exciting CPUs but does the ISA matter here? Yes probably quite a bit. Does it matter that they are compatible with beefier OoO cores in say a big.LITTLE configuration. Yes it does.
I wouldn't mind too much if he had said I'm just talking about high end. But he implicitly claims to cover everything except 100k transistor CPUs.
> The Cortex-A53 is the most widely used architecture for mobile SoCs since 2014 to the present day, making it one of the longest-running ARM processors for mobile devices. It is currently featured in most entry-level and lower mid-range SoCs, while higher-end SoCs used the newer ARM Cortex-A55. The latest SoCs still using the Cortex-A53 are MediaTek Helio G37, both of which are entry-level SoCs designed for budget smartphones.
These may not be the most exciting CPUs but does the ISA matter here? Yes probably quite a bit. Does it matter that they are compatible with beefier OoO cores in say a big.LITTLE configuration. Yes it does.
I wouldn't mind too much if he had said I'm just talking about high end. But he implicitly claims to cover everything except 100k transistor CPUs.