Talk:Power ISA

Trying to place POWER4, 970 in the chart

Recently I was talking on Twitter about how OpenBSD has PowerPC support for Macs up to and in including the 970 (G5 in Apple-speak) although only in 32 bit mode. Since it's missing from the chart, I thought I'd try to add it. Progress so far:

According to IBM, "The PPC 970 enhances the POWER4 instruction set with 162 Single Instruction/Multiple Data (SIMD) instructions that allow many processing elements to perform the same operations on different data in parallel." this is from a product overview of a BladeCenter JS20
Wikipedia says POWER4 was PowerPC ISA v.2.00/01, but I'm still looking for the source for that.

Other possibly useful documents, just not for POWER4/970:

Forget where I found the link to this document, but it might help place POWER5 in the chart? POWER5 Architecture
Cell Broadband Engine Architecture and its first implementation

Also, someone smarter than me might be able to merge this info with the current chart; it's the -qarch documentation for IBM's XL Fortran compiler, listing which targets have different feature support. Documentation for newer XL Fortran compiler versions strips a lot of this out. Olddellian (talk) 20:41, 17 March 2019 (CDT)

I've already looked at the PowerISA and compliant cores thing. Long story short, I couldn't figure it out. Compare even these Wikipedia sites:

https://en.wikipedia.org/wiki/Power_ISA

https://en.wikipedia.org/wiki/List_of_PowerPC_processors

https://en.wikipedia.org/wiki/IBM_POWER_microprocessors

https://github.com/torvalds/linux/blob/master/Documentation/powerpc/isa-versions.rst

https://www.kernel.org/doc/Documentation/powerpc/isa-versions.rst

Also the POWER1 … 9 Wiki pages.

I also searched some RedBooks and unfortunately didn't find all the informations.

As long as I'm not sure, I won't touch the chart.

MPC7500 (talk) 19:57, 20 March 2019 (CDT)

Here is another source: https://embarc.org/man-pages/gcc/PowerPC-Built_002din-Functions.html

POWER5+ v2.03