[libre-riscv-dev] PPC on Talos and Playstation 3

Lauri Kasanen cand at gmx.com
Mon Mar 30 09:05:11 BST 2020

On Mon, 30 Mar 2020 00:52:31 -0700
Jacob Lifshay <programmerjake at gmail.com> wrote:

> Normally, the size of a pointer or general-purpose integer register is used
> to determine 32 or 64-bit rather than the size of the FP unit since nearly
> every processor more powerful than a microcontroller supports 64-bit FP.
> even the 8086 (16-bit) supports 64-bit floating point (or even 80-bit) with
> the 8087 math coprocessor. Also, recent intel processors support 512-bit FP
> registers (the avx512 instruction set), but it's only a 64-bit processor.

Aiye, but the context was running 64-bit fpu code, and with an embedded
cpu it's possible it would not have such.

- Lauri

More information about the libre-riscv-dev mailing list