steve_bank
Diabetic retinopathy and poor eyesight. Typos ...
An ARM 64 bit instruction set. All processors have the same basic instructions.
Logic
Comparison
Boy operations.Arithmetic
Comparison
Branching
Memory access
What separated Intel x86 and Morola 68k was memory architecture.
The 65k was flat, any user had full access to all memory.
x86 used segmented memory. Don't know about current processors, originally you had 64k segments. In the early days 64k was a large program. It was intended to support a multi-user OS where users or apps could be quickly switched in and out. It was called context switching, the entire state of an app was stored and another switched in.
With the 386 the complexity of the instructions to manage apps became too commentated to do by direct coding and required tools.
Real/Protected Mode. Early 286 386 users used te as fast 8086 processors, protected mode was complicated.
Logic
Comparison
Boy operations.Arithmetic
Comparison
Branching
Memory access
What separated Intel x86 and Morola 68k was memory architecture.
The 65k was flat, any user had full access to all memory.
x86 used segmented memory. Don't know about current processors, originally you had 64k segments. In the early days 64k was a large program. It was intended to support a multi-user OS where users or apps could be quickly switched in and out. It was called context switching, the entire state of an app was stored and another switched in.
With the 386 the complexity of the instructions to manage apps became too commentated to do by direct coding and required tools.
Real/Protected Mode. Early 286 386 users used te as fast 8086 processors, protected mode was complicated.
Protected mode - Wikipedia
en.wikipedia.org