I'm studying ISAs and would really like to see the very first ISA that Sophie Wilson chose/put together when designing the very first ARM CPU while at Acorn Computers around 1983 or so.
From what I understand, they (she and Steve Furber) collaborated and chose the ideal instruction set for their planned processor, using the RISC paradigm they recently learned about.
Does anyone know of a copy of this instruction set (I would love to see Sophie Wilson's original design, before Steve Furber asked to cut out a few instructions that he felt weren't technically possible to physically fabricate)?
I've looked online and on various forums but couldn't find anything definitive. Maybe this was never published, but there must be some historical record?
It could just be a high-level overview: number of instructions, brief description of what each instruction does. It doesn't have to be the technical (official) specification, though that would be great.
Thanks in advance.