Use of the RISC-V instruction set only in a Open-source FPGA design (license question)
I have started to create a VHDL design for new architecture. Now I'm thinking about the used instruction set. Could create an own encoding of the used machine code, but must create a C compiler for it or port the architecture to an existing compiler like GCC. Also must write an assembler, if I use an own instruction set.
What are the license requirements for me as developer, when I want use any specific parts of the RISC-V instruction set only? Would also to add some specific processor control registers and a modified base architecture. Might be security by obscurity, but control registers where I can setup the end of the stack and the size in privileged mode. Also two types of the stack. Return address and data, both separately as example.
BTW: The project is currently for the purpose of education only. Without interest from me to sell this maybe exotic (not RISC-V itself, but my modifications) architecture.
Use of the RISC-V instruction set only in a Open-source FPGA design (license question)
I have started to create a VHDL design for new architecture. Now I'm thinking about the used instruction set. Could create an own encoding of the used machine code, but must create a C compiler for it or port the architecture to an existing compiler like GCC. Also must write an assembler, if I use an own instruction set.
What are the license requirements for me as developer, when I want use any specific parts of the RISC-V instruction set only? Would also to add some specific processor control registers and a modified base architecture. Might be security by obscurity, but control registers where I can setup the end of the stack and the size in privileged mode. Also two types of the stack. Return address and data, both separately as example.
BTW: The project is currently for the purpose of education only. Without interest from me to sell this maybe exotic (not RISC-V itself, but my modifications) architecture.
However, analysts are positive on the stock now. “We have seen a huge downside movement in the stock due to the central electricity regulatory commission’s (CERC) order that seems to be negative from 2014-15 onwards but we cannot take a linear negative view on the stock and further downside movement on the stock is unlikely. Currently stock is underpriced. Investors can bet on it for a longer horizon," said Vivek Gupta, director research at CapitalVia Global Research.
Should I buy bitcoin?
“To the extent it is used I fear it’s often for illicit finance. It’s an extremely inefficient way of conducting transactions, and the amount of energy that’s consumed in processing those transactions is staggering,” the former Fed chairwoman said. Yellen’s comments have been cited as a reason for bitcoin’s recent losses. However, Yellen’s assessment of bitcoin as a inefficient medium of exchange is an important point and one that has already been raised in the past by bitcoin bulls. Using a volatile asset in exchange for goods and services makes little sense if the asset can tumble 10% in a day, or surge 80% over the course of a two months as bitcoin has done in 2021, critics argue. To put a finer point on it, over the past 12 months bitcoin has registered 8 corrections, defined as a decline from a recent peak of at least 10% but not more than 20%, and two bear markets, which are defined as falls of 20% or more, according to Dow Jones Market Data.
