added miner repo

rin/miner/cpuminer/README.txt

@@ -0,0 +1,80 @@
+This file is included in the Windows binary package. Compile instructions
+for Linux and Windows can be found in RELEASE_NOTES.
+
+cpuminer-opt is open source and free of any fees. Many forks exist that are
+closed source and contain usage fees. support open source free software.
+
+This package is officially avalaible only from:
+
+ https://github.com/JayDDee/cpuminer-opt
+
+No other sources should be trusted.
+
+cpuminer is a console program that is executed from a DOS or Powershell
+command prompt. There is no GUI and no mouse support.
+
+New users are encouraged to consult the cpuminer-opt Wiki for detailed
+information on usage:
+
+https://github.com/JayDDee/cpuminer-opt/wiki
+
+Miner programs are often flagged as malware by antivirus programs. This is
+a false positive, they are flagged simply because they are cryptocurrency 
+miners. The source code is open for anyone to inspect. If you don't trust
+the software, don't use it.
+
+Choose the exe that best matches you CPU's features or use trial and
+error to find the fastest one that works. Pay attention to
+the features listed at cpuminer startup to ensure you are mining at
+optimum speed using the best available features.
+
+Architecture names and compile options used are only provided for 
+mainstream desktop CPUs. Budget CPUs like Pentium and Celeron are often
+missing some features. Check your CPU.
+
+Support for AMD CPUs older than Ryzen is incomplete and without specific 
+recommendations. Find the best fit. CPUs older than Piledriver, including
+Athlon x2 and Phenom II x4, are not supported by cpuminer-opt due to an
+incompatible implementation of SSE2 on these CPUs. 
+
+More information for Intel and AMD CPU architectures and their features
+can be found on Wikipedia.
+
+https://en.wikipedia.org/wiki/List_of_Intel_CPU_microarchitectures
+
+https://en.wikipedia.org/wiki/List_of_AMD_CPU_microarchitectures
+
+File name                      Architecture name
+
+cpuminer-sse2.exe              Core2, Nehalem, generic x86_64 with SSE2   
+cpuminer-aes-sse42.exe         Westmere
+cpuminer-avx.exe               Sandybridge, Ivybridge
+cpuminer-avx2.exe              Haswell, Skylake, Kabylake, Coffeelake, Cometlake
+cpuminer-avx2-sha.exe          AMD Zen1, Zen2
+cpuminer-avx2-sha-vaes.exe     Intel Alderlake*, AMD Zen3
+cpuminer-avx512.exe            Intel HEDT Skylake-X, Cascadelake
+cpuminer-avx512-sha-vaes.exe   AMD Zen4, Intel Rocketlake, Icelake
+
+* Alderlake is a hybrid architecture with a mix of E-cores & P-cores. Although
+  the P-cores can support AVX512 the E-cores can't so Intel decided to disable
+  AVX512 on the the P-cores.
+
+Notes about included DLL files:
+
+Downloading DLL files from alternative sources presents an inherent
+security risk if their source is unknown. All DLL files included have
+been copied from the Ubuntu-20.04 installation or compiled by me from
+source code obtained from the author's official repository. The exact
+procedure is documented in the build instructions for Windows:
+https://github.com/JayDDee/cpuminer-opt/wiki/Compiling-from-source
+
+Some included DLL files may already be installed on the system by Windows or
+third party packages. They often will work and may be used instead of the
+included version of the files.
+
+
+If you like this software feel free to donate:
+
+BTC: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT
+
+