One of the student developer in JNTU, INDIA developed this ppt as a reference guide to learn about Open POWER ISA , Open POWER RTLs

1. Highlights of
Open Power ISA, IBM-A2I, IBM-
A20, Power 10

2. POWER ISA Timeline:
 August 20,2019 – Open ISAAnnouncement at NA OpenPOWER Summit
 February 13, 2020 – Final Draft of the End User License Released by OPF:
https://openpowerfoundation.org/final-draft-of-the-power-isa-eula-released/
 April 2020 – POWER ISA 3.0 contribution to OPF
-Includes:
• Compliancy subsets
• Custom Extension Space (Sandbox)
• Incremental updates from prior publication
 May 2020 – POWER ISA 3.1 contribution to OPF
 May 2020 – POWER ISA workgroup chartered in OPF

3. Power Architecture Format – The Books

4. Power ISA Compliancy
A supporting/ compliant design must :
- Support Base architecture (never optional)
And support atleast one of the compliancy subsets:
- ACS: AIX compliancy subset
- LCS: Linux compliancy subset
- SFFS: Scalar fixed-point+ Floating-point compliancy subset
- SFS: Scalar Fixed-point compliancy subset
And may utilize the combination of hardware and firmware

5. Open Power ISA Compliancy subsets

6. Power ISA 3.1 Foundation for Expansion
 General: Byte reverse instructions, Vector integer multiply/Divide/Modulo instructions, 128 bit Binary integer
operations, VSX scalar minimum/maximum/compare- Quad precision
 SIMD: VSX 32 byte storage Access operations, SIMD permute- class operations, Bit-Manipulation operations
VSX load/store Rightmost element operations, VSX Mask manipulation operations, VSX PCV generate
operations for expand/compress
 Pause/ wait reserve
 Copy/ paste extensions
 Hypervisor interrupt location control
 Instruction Prefix support: 88 and modifying opcodes

7. Power ISA 3.1 Prefix architecture

8. A2I Power Processor Core

9. A2I Architectural Capabilities

10. A2I Microarchitecture

11. A2O Power Processor Core

12. A2O Microarchitecture

13. Power10 Microarchitecture

29. Resources :
ISA : https://wiki.raptorcs.com/w/images/f/f5/PowerISA_public.v3.1.pdf
ISA and Power10 : https://www.youtube.com/watch?v=imzUxijnv7M
Power10 : https://www.youtube.com/watch?v=27VRdI2BGWg
A2O : https://www.youtube.com/watch?v=Bz3tFvKTLxg
https://static.sched.com/hosted_files/openpowerna2020/39/Bill%20Flynn.pdf
https://www.youtube.com/watch?v=2IshMgIGCR4
A2I : https://www.youtube.com/watch?v=DshEFxTZd6I
https://github.com/openpower-cores/a2i - A2I (VHDL)
A2I user manual : https://wiki.alcf.anl.gov/parts/images/c/cf/A2.pdf