Re:Ask HN: Does anyone care about OpenPOWER?
by inkyoto on Thursday February 08, 2024 @05:00PM
(#39308362)
> Perhaps it didn't have atomics at that point? That would've killed it for that project.
That would have been PPC 601 and perhaps [entry level] 603 models. Motorola/IBM first released a single processor PPC, then they added support for multiprocessor systems which did have atomics – https://devblogs.microsoft.com/oldnewthing/20180814-00/?p=99...
Other than that, I immensely enjoyed hand writing PPC assembly – it is a very straightforward RISC design, the «rlwinm» / «rlwimi» instructions are fun – once you figure out how to use them.
That would have been PPC 601 and perhaps [entry level] 603 models. Motorola/IBM first released a single processor PPC, then they added support for multiprocessor systems which did have atomics – https://devblogs.microsoft.com/oldnewthing/20180814-00/?p=99...
Other than that, I immensely enjoyed hand writing PPC assembly – it is a very straightforward RISC design, the «rlwinm» / «rlwimi» instructions are fun – once you figure out how to use them.