English Amiga Board - View Single Post - Lightwave benchmark for users with PPC, 060, PiStorm, Vampire accelerators

Karlos · 13 February 2023, 22:53

There's no such thing as CISC, really. It's just a term invented by early adopters of RISC to explain how their architecture was different.

When you look at, for example, the PowerPC, it's called RISC but it's in no way a Reduced Instruction Set. It has many instructions and a lot of them are pretty complicated. What it adopts of the RISC manifesto (something I just made up but probably exists in some form somewhere) is that it essentially exports the complexity of optimum instruction scheduling to the compiler. It's also a load store architecture which is typical of RISC machines.

There was a point to all this, but it's been a very long day and I've forgotten, so I'll just finish with the closing statement, "bollocks".

13 February 2023, 22:53	#73
Karlos Alien Bleed Join Date: Aug 2022 Location: UK Posts: 4,165	There's no such thing as CISC, really. It's just a term invented by early adopters of RISC to explain how their architecture was different. When you look at, for example, the PowerPC, it's called RISC but it's in no way a Reduced Instruction Set. It has many instructions and a lot of them are pretty complicated. What it adopts of the RISC manifesto (something I just made up but probably exists in some form somewhere) is that it essentially exports the complexity of optimum instruction scheduling to the compiler. It's also a load store architecture which is typical of RISC machines. There was a point to all this, but it's been a very long day and I've forgotten, so I'll just finish with the closing statement, "bollocks".