Open Grubby-CPU opened 2 years ago
I am not sure if DITC was included in any ISA level. I can try to find some documentation. I only see it described in the A2L2 spec relative to its bus activity.
I do see it referenced in several patents from that timeframe; e.g. https://patents.google.com/patent/US8640230.
It is briefly mentioned in the A2O user manual, but the function is also not described further; there are some related SPR bits. It may have been an 'experimental' feature.
Hi all,
When I was reading the A2 code, I found some unknown codes (xuq_dec_b.vhdl) as shown below. I guess these instructions are related to DITC (direct interthread communication) but I cannot find any information in the A2 manual or the power ISA manual. Any help?