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.
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Spiking bond yields driving sharp losses in tech stocks
A spike in interest rates since the start of the year has accelerated a rotation out of high-growth technology stocks and into value stocks poised to benefit from a reopening of the economy. The Nasdaq has fallen more than 10% over the past month as the Dow has soared to record highs, with a spike in the 10-year US Treasury yield acting as the main catalyst. It recently surged to a cycle high of more than 1.60% after starting the year below 1%. But according to Jim Paulsen, the Leuthold Group's chief investment strategist, rising interest rates do not represent a long-term threat to the stock market. Paulsen expects the 10-year yield to cross 2% by the end of the year.
A spike in interest rates and its impact on the stock market depends on the economic backdrop, according to Paulsen. Rising interest rates amid a strengthening economy "may prove no challenge at all for stocks," Paulsen said.
