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I'd like to get familar with an implemebtaion of modern CPUs. Are there Amy processors with an open-source Hardware Decriprion Language? Perfectlt, I'd like to take a look at Intel/AMD implemebtaion, but Im not sure it is open.

So is there any CPU with an open source decription? I'm loooking for any architecture: x86, Arm, DEC-Aplha, etc...

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    \$\begingroup\$ This is unfortunately one of those cases where you're simply asking people to enter text into a search engine for you. \$\endgroup\$
    – Tom Carpenter
    Apr 8, 2020 at 22:50
  • \$\begingroup\$ There are plenty of CPUs over on opencores.org. RISCV is gaining popularity \$\endgroup\$
    – Dave Tweed
    Apr 8, 2020 at 22:51
  • \$\begingroup\$ Yes there is. LEON (Sparc) is one. \$\endgroup\$
    – user_1818839
    Apr 8, 2020 at 22:52
  • \$\begingroup\$ I don't think that question should have been closed. It's vague but there are actually valuable answers (about hobby cores vs properly design, clones of legacy CPUs or RISCV, traditional HDLs vs Chisel or Spinal...). \$\endgroup\$
    – TEMLIB
    Apr 9, 2020 at 19:18

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A very quick search brought up OpenRISC - it is in Verilog.

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    \$\begingroup\$ Verilog is an HDL. \$\endgroup\$
    – Dave Tweed
    Apr 9, 2020 at 1:17

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