Re: is Vax addressing sane today

On Mon, 7 Oct 2024 17:38:54 -0000 (UTC)
Thomas Koenig <tkoenig@netcologne.de> wrote:

Anton Ertl <anton@mips.complang.tuwien.ac.at> schrieb:

Michael S <already5chosen@yahoo.com> writes: 

On Mon, 07 Oct 2024 07:17:02 GMT
anton@mips.complang.tuwien.ac.at (Anton Ertl) wrote:
 

 
However, in John Mashey's criteria the number of registers plays a
role; he requires >4 bits for the GPR specifier, and >3 bits for
the FPR specifier.
 
- anton 

>
Which sounds rather arbitrary. 

>
In a way it is, but see below.
 

Or even worse, like if he wanted for
SPARC to be called 'typical RISC' and for ARM to be called atypical
and had chosen the numbers to match the agenda. 

>
I think that ARM did not exist for John Mashey. 

 
When was his definition made?
 
ARM was rather late to the RISC game, this might have been literally
true.

ARM was rather early to the RISC game. Shipped for profit since late
1986. Less than a year after MIPS and ROMP. Several months after
SPARC. PA-RISC first shipped in the 1986H1, but volume production
started later than ARM.
Appolo PRISM, Motorola 88K, Intel i960 and AMD 29K all came later than
ARM.