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# neorv32
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neorv32 with modiefied Makefiles, compatible with MSYS2 64 for cross compilatation on Windows and Linux.
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# Windows Installation and example of cross compilation
### 1. Installation
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You must download the latest RISCV precompiled binaries for your platform from: https://github.com/xpack-dev-tools/riscv-none-elf-gcc-xpack/releases/
in this case the architecture x64 for windows binaries(https://github.com/xpack-dev-tools/riscv-none-elf-gcc-xpack/releases/download/v13.2.0-2/xpack-riscv-none-elf-gcc-13.2.0-2-darwin-x64.tar.gz), then extract these under the folder C:\riscv_precompiled\
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< span style = "color:red" > Note: If you change the location where you installed the RISC-V precompiled binaries, you need to modify line 42 of the file common.mk. This will be explained further in this manual at point number 8.< / span >
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< span style = "color:magenta" > Your precompiled binaries should look like this on your file system:< / span >
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< br >
< img src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAnwAAAGICAYAAADbBj3EAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAGSVSURBVHhe7d0PdBvXfSf6L+TapmS7atI6EOA/cl3J2yp6ZEg0f0w1idtuGYpmap+21jvbpuXqPZZq9hxTalylTKm2ZxNxxcabRGJOm0jLLk0nm27l9hwnhiGZ3SbNHylxsiSfUEVJLCXxH4kgnE0aO5b1z+K8+7tzLzAYzIAgRZDg6Ps5HnPmYubODABivrz3DhR79ZV/c6Do/y2amPlJ1Vm+z9fivq8WTtgzHnY+811/rvWR33J9h11tqn+d+N6vHwvzWvhfe2+tEfj9rXR6oh5O0RzTCjmWCDzlRDU3198T/l4REVG9WGF+ElGIuf5RNNf1iYiIao2Bj6gCBjciIooCBj6iBcSASERE9YiBj4iIiCjiGPiIiIiIIi722msX2QtVUbX3WC/MDexEtBzxY5SoXizq1dj/q1/PX8vi/iAiIiKiqGLgIyIiIoo4Bj4iIiKiiGPgIyIiIoo4Bj4iIiKiiGPgIyIiIoo4Bj4iIiKiiGPgIyIiIoo4Bj4iIiKiiGPgIyIiIoq4ksD3+7//B1i79ucDp+eeex6f+MQnsav/z83a5d7+9ndWfDzI5z73RNm+pMzPv57sazmR51aev8Xivla7zFKp5557Tj2Hd5RNn/vc58waLjlmmSqxdc3F29/+jrLnQsoqHcvXv/4NXS77W+7suchPunLyPpf3jyXz3/j6183S3Mj7brb3PBHRclQS+D71qUfVBfX7err99tvxD48dLCyvXXu7WSvcl7/8Rewe+JBZqp7sy+7nS1/6Ih58sLck9MkH8MMP/9fCOjLt3Pkn6kN94S6Y7373ffjWiW+ZpauDPNfPPfdsYZLn3Xuxk/eDTAtJgt473vEOvPe9f6SXbfiR19N7LE8/XXrBfstb3oyPf3wIu3bN7Q+Karz73b+JE4v42su5yDnKT7pyuwd2q8+eL5ml+nQ1fr4QUX2puy5dCZZ9fX+Kr5sLvm0JkjDp9Zu/+W68eQEvmB/+q0H0bPujq/pDWULIl770pbLWtYU0ODiI++67zywBDzzwAB577DH1ev6mKXENqIu4n6zz7LPPLnjL2F/91V9h27Ztixr6aLmRfwF9/v8KOj9fiGipzSvwSbet7Vr1ds1JuXdZul3tevPtJvnMZ/4OvQ8+aJZq55c2/BIO7P/kknwo+7tYg54rb5enfdy/XVgX7lz09fWVhG1vnTLv3V8Q2UYeCwqNEtSkNde2bMk60tpXqaWrX+1TJkvWHx8fN0sLY4N67ffv31+z0CevnZyrPC+261Hmbfe0beW0k/e5s9vZKZ1O65/erm37PvCW+cl7RuqSn7Yu7++qfa3t4zZUe19zb7epZR+TqdJ7xRvS5THZn/dYbLld9j4H9tjse0sm+zsg7HmF8W4nk5d0/YY9Vr3Zg+BSfr4QUcTFzDSLOQe+T33603jLW9+iLi7f112+g4N/peafN48WSfh7p7o42y7Y1tZW80hl0k0rdd5332/qep9//vkFbcmrZCk+lOUi/Y53vNN0n7vdmcJ78ZQL0e/+7u8WHrfPZSZzqKRbVl6bK239uuWWJJ5Tz7mfXFS/+KUvFfYlwdBP1pEWPHnc32InJKhJYLOk27ba94X1VvXeO3r0qFlaOLUOfe6QhGcDux5tK6c8Lq+nJUFFutntcy7rvOENcfz+e96jX3tL5qVs7dq1piSY1PWg+uPJ7kdeK2+wkvePfVxCuOzf+5rL77N9X9qQKd3s9vFbbr1VPybryHvIlstxyzl6A6nsW/6Qk8flPSF1uZ8rz+o65Vi95NiErVNaer2/I2G870mZ5H1rw6Ecz+88sKXkd8+/34XE0EcUQd6gVUXoWkpzDnzveMfbdXeqkCAmLTYv5vN62euWW29RH/rFD3g7ZiuIhDrbEigfwHIxWqyQt9T+24H/pi/Wb37LW0wJsHv3hwoXOLlgece8CTsvP70XeVlvejpnlhbWmjUJ/TpZ/tdTjtOGk4UkXbtB3bvLjYxRDCO/Q/Z1k9fThuXPfOYzOixZEsJk+s377tOPWTIvZbORsGNbU2U/3tZcIe8fb2urBKWPfOQjZgn4w54/1AFQ2JDpDfbynpAQJe9deQ9bUqc/pMq+7e/4Aw/8jn4ObF32pzcg+n8HPvKR/1o4lkokaEuAtKQOGbYggn73vOtWZ/7dvEQUEVW2sC21OQe+tbeXtyLkpqfNXJEOI2pdG+Qq8d60IZO9QcT+DGpBrAX5q1v++pa/wuWv8cViW0YsG+LkgnfmzJR6HsNvmPF29cqFTNa/EhIAglrd5KItF0O7L39LooS9uV4sb1Xnffr0abO0tKRVT1r3pJVPWvsWmgTmMNLqJ8+fPK/eVisJ2PH4G8xSkQ1l8hrY18Eb1MJI620lQe8zaZmzr7m0RNvQf0a9bv73rZe/tVHWlW3mq9LvwGzsc2snYcNkpXNYaEv1+UJEJGp604bcsSsBToLAfL9GRf4Cl7/Ea20pP4z9F0J7MSoEP0/LmpdcvLx3t0oryJWwrTMdHZtNSSlpeZH9SAusv4tOyuTCOpcuZdnPp9X+vPUshVqHvWrY11Bea+lKtfL5F81cKenily5ymWR+PmYLbUJe18KxmcmqFOD8r2k1+5qLafVH5h13VDfmzttlayd/ILWC/2DytuLNr0WPYY+I5m2BWhBrFvi8F63EmjUl3YFzIaFRQoh/ULZ8bctCfi3L+/+0b0k+jGWsopyf93vD5KtHJOgKCUX+O2flubUX1KamJv1Tlm1X1XxIUJMWHLcVr/xiKPu3+7SPe8OIlNmxWmGhL5VKlRyjbCNde7Jf/zb2Rg3/TRvzGfc3mz/90z9d0rDn/V2RliwbpOQ98NBDD+l5Ic+RfZ7kfSFduTKFBXQ/CeSW1FMp3AvZf9jX4EgXsmzvfd3kPOQ1lT88vNtVs6/ZuL8jxX3JuUhX8GwkDL/voeDudPndc8f3ue9r+SnLs5t76FuqzxciWmJ11NVbs8B35vQZ9eFfHJcnf2XPl7QSClufTNL1uJDj/J544rM1/zCWi4m3a0kukDJ+SJ4beY4Kj6mLvny3mJALqG09s4/bchuWpOw97/n9Obfw2W1lclvsgm+2sLzre8eDWbbbV+oKGlAvj0vwtxdYIV3/NijaumXq6flDs0YpCYwSHBfSE098bsnCnvC+L2Rcmn3t5afcKGEfk+fIPufy+ksLl/t4cGuVn7dLXuqS573StsX3YPF1seFUjsP/utkuY/vdjbZc1pH3cLXHGUTC59DHP16oU95/ld6rlry/vM+hTPa9Kb97/t+h8mEJYeFOyqsPfovx+UJEdcq20AWFP+9jQY8voNhrr12cXx/FVcP/CoQ9XTV+pSJCAoO0YNkwMRfSyvjYY/+w4F8GfTWQFnJpEasmJNWbK3nPXDl+PBItN3V/NbYfK2EH6v/YsevNFj9mebymY/iI/KTFRVqxbEtRtaRbUFo55WtDKJi0XHlbsuzk7XYlIqKrE1v4ZuWP4LNFbKL6wxa++eLHI9FyU/dXY/uxEnag/o8du95s8WOWxxn4ZuV/RWZ7xokoOvjxSLTc1P3V2H6shB2o/2PHrjdb/JjlcXbpEhEREUUcAx8RERFRxDHwEREREUUcAx8RERFRxDHwEREREUUcAx8RERFRxDHwEREREUVc7NVX/k1/c0vY17fURt1/S84ywefRb7avKZpNtb8HtX7m7XFcXa/w4n4K0WIqvrb+97T/VeenWv0Iey0qfz7N9nvs3eoq/Z2v/ASG/1KEPV1VPs4WvmXtKv1lWSLyO2OnWlus/dQPvpeJiGqJgY+oCldX+CIioqhh4CMiIiKKOAY+IiIioohj4KNIsWPf/BMtNRmjx3F6RERLhYGPiIiIaLEsUUtEbOLpsTn+2b0QR1leR9lB2FXCjs5bhXcdXe6r31+H5+HZT95XV1UHdOVmPy5rYfd7ZerpWOZncV7dWqr+nbO47HGFPZP
style="float: left; margin-right: 10px;" />
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### 2. Cloning repository
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Clone or download this repository on your windows machine.
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```
$ git clone https://gitea.squirrelnut.synology.me:5001/FPGALover/neorv32
```
### 2. Download and install MSYS2(msys2-x86_64-20240113.exe) --> https://www.msys2.org/
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Once MSYS2 is installed, run MSYS2, and run the command using the MYSS2 command shell (pacman -S mingw-w64-ucrt-x86_64-gcc)
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< br >
```
$ pacman -S mingw-w64-ucrt-x86_64-gcc
```
< br > < br >
Select ALL dependencies by pressing Enter and select Y[yes].
< br >
```
resolving dependencies...
looking for conflicting packages...
Packages (15) mingw-w64-ucrt-x86_64-binutils-2.41-2
mingw-w64-ucrt-x86_64-crt-git-11.0.0.r216.gffe883434-1
mingw-w64-ucrt-x86_64-gcc-libs-13.2.0-2 mingw-w64-ucrt-x86_64-gmp-6.3.0-2
mingw-w64-ucrt-x86_64-headers-git-11.0.0.r216.gffe883434-1
mingw-w64-ucrt-x86_64-isl-0.26-1 mingw-w64-ucrt-x86_64-libiconv-1.17-3
mingw-w64-ucrt-x86_64-libwinpthread-git-11.0.0.r216.gffe883434-1
mingw-w64-ucrt-x86_64-mpc-1.3.1-2 mingw-w64-ucrt-x86_64-mpfr-4.2.1-2
mingw-w64-ucrt-x86_64-windows-default-manifest-6.4-4
mingw-w64-ucrt-x86_64-winpthreads-git-11.0.0.r216.gffe883434-1
mingw-w64-ucrt-x86_64-zlib-1.3-1 mingw-w64-ucrt-x86_64-zstd-1.5.5-1
mingw-w64-ucrt-x86_64-gcc-13.2.0-2
Total Download Size: 49.38 MiB
Total Installed Size: 418.82 MiB
:: Proceed with installation? [Y/n]
[... downloading and installation continues ...]
```
< br > < br >
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After the installation is completed, add the *Path* *"C:\msys64\ucrt64\bin"* under the enviroments variable on Windows.
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< br >
< img src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAR0AAAA/CAYAAADdeRzyAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAq3SURBVHhe7Z39a1vXGce/DvsHluy3tHmbtOINEdLBQGYZg7CAjMMMo15ZmJv+Ii9jMAvmrluqdo2TZcM/SAzWYrWDRO26oaxgRpBgoyQhYP1UghGZ40lJnTRLQhLy8gfEd+c595x7z5WuHFsvx4r1fMKJztu997nH9z73eY7ueYSlpSXn/v37Xrp3755Md+/e9dKdO3ec27dvO7du3ZLpt+/8wXn06JHz8OFD58GDB4H+ut/Nmzed5eVl5/r1606tVnPoOFevXnWuXLniVCoVZ2Fhwbl8+bJz9uxZ5/Hjxx1Jx09lnVWpZpw4kk5RFRsoJh3EM05VFqpOJh53Mm5BUXSSMOvMsptPJuMO9DHk8SDKbkqaBzba4pnMqvspJv19wNuJOnbR3w81VTO0nd5vQHhF/TloGs/F6xM4Dz1+ND66Tp/bKmOWEWOr+gbkammMgm2+TKbca5WPsc0W8QfpL+KDiKrs6kQwmY6hcK6myo3UstPIxccwElEVKKMymIfjzCKBEiaiKcSKjiiLVM2gMjyErNxdsC2PAnJye425HyAxq/bhFJHMTat9EGWkpoE8tQnNlBsewLjYm+wryuXUjDhSGGK76AAGBtw0Ed5JQbIWMFZVMhSBaRKgNINUrKjkcjBLgjYdM3G8xdEQuVodoyYymaxLPsYmXVI65/Hmjh3YtWsX9uzZg0jkFZy5oZpwCe/GYti7dy/27duHEydOqHpLlBdRVdkGErNw5ifFpalIjCJWOIfgJerfsNFUDEWzP+IY0xqotoQKkhiVF7sgMol0soxFOji1xTOYUm2RybToaWLshyhNKAUxXKec4sjk1fGFrOIp728nyxUshd5fYjt9w3o3ZBPkeRhKajgnhlCcRHQQ8dwwhupv9tAxE8fTJ2vK1eoYNZPJZF3yMTbpoqXzbbx9YRnCvcJnx4Df//oMbqoWYC+mzi1AuFd469WXVZ0FIiMYi+cwt+qT3SSB0VgKM4H+5g3rWiJdpZbF0DAgvANxvCqEy7ABJNXxVSItJRTEvMjnhW0VtJbCxqwbhMhksuHyMc2w4l7tfP0X+PHlEs77Wscn8g2VsQGZ164bEnApxI2dpTJZFEPZwFMwMSVM/rVrKZ/IS4gJu8TbVBxjOqee6tRW9i986aa52Uaqiyhrl7B2DoWyrLWHOo8G90URmZxHVWjCimFSrXnMWh2jZ8hk0pZ8TFewPqdDTx0TR5jKViEXSs4dKNOc0jgw0sxkIeuoYs6jrJUEZs3jyDkIbRmJNjUHQ23jGPNdh3oSU8gghaiUcxEx65aOex7Cl/HHizS25/K5bmZ60nAH1zxmrY5RE5lMOiIf0w0G6FulrVu3qqJQAsIkJVZWVuQnoU1YXffeBx9janLCq9OJcPOf4Y0Xsohc+BRHdqzgi7/8CAeKCfzrb+N4YeUi3v7mBP4hewtH68gpXMweVaX2+NP7p5F+85eq1EHEBTy0NIV588LtJORCRReRtuGu2aLbYxZKCRMDcxhdyzhuiHwM0UVL53Mc/747kXzg5Ev44O+vYYdq8eZ0/vkrbL9s2dJpBWEddfPiLM2kfBdqs9DlMQulNIfcWsdxI+RjJFYmkmu1E/ieqg3w4mH88Af3VKGfqCE7pNwCkYZzybpvwZh1QZYijeVwxf82j+lZrM/p1PPV7+xXuX4igsl545uXzeRWbQTqmyrHmQcbL72PlTkdqnv69KnqT3M672H3uTx+sn0F1WoVBw8elNu2i57TefLkiaphGKbX6JLSaUy+0nHzur4bSodhmN5lw90rhmH6C1Y6DMNYhZUOwzBWYaXDMIxVtuiJY0LnzToirA9h5ul9ExNqa9Ze39c+wfdk6tdbuW+2Toj/N57ShJZTh3zwqWWHlOz25W1PLqpv3E4i37lp0ubRO38fZv30n6UjL+ooFtOuUpQpD5wLXMEJjCbXsxq9O9CNPT1YVXLWv4NSwkxKr/7spryNCqKrcsl3bp71vk1v/H2Y1ugzpSMsnHE3MFQgEoK40Cfr3s7b+JXIJcxVMsg3ufto1TUyGej1n/bk7Q25eKX480t/KR0ZGsIIGlUPrUzWrlboSmT11C+p1+5FosXN0p1QZT9oVNCFmyi55cBiaO949X2pbQ652CJmVF3ABRTW2vhiGrMjqkysJq9XV18OOa7qMzGhz4kCh6mAWdShI3Ipqv44+uNmyqjyWX/FuNePV4o/t/Sfe9V2uFJxA64lRGhDuEwVy8d4OpfmckimJxEJDa0pyFUwqAKGFWMpjMs7jKy1AsZ0SD2P9YbiJIUTRWFMu0mm9afDpVJ9ERSRUAYu0x06IpcxjjJMxXgTBSL6hYY6Xe/5Mr1Cl5TOefxm507s3r3bC1d62gtXKrj0rheu9OTJoqq0RNvhStcYIjQsXCa15+bUTeO6KfIebRZaM5n25jYSo+KGW6wKY2JcKIp8+JzHekJxKqsvEGfGoy5caj0dkcsYR+HeemFKG2gS6lSVOfTo80cXLZ2Xkb7whR+u9I3TbrjSm3kcPgr8ecENV3rs51+Tva1AJnnb4UrXSGi4zASmMhUZ8Y7mPipjI95NFx5as545OUlb1sGroimUyylEPRenDXnbol25aliqqOy62KjzZdrBinsVCFd64zoW9u7BTreJlpmrjA2UiyNcosCNXetCuFJFfbjMyMgYUJjBTAEN1kSgr7SK9JyFcF2mhSs2OotZcjN0Em5JPJ5B1bDOgvJGMRg3LAiaj1FZrYDXEvIzQEfkIsq+a/SsubZV4Anl5w/7czr7D+CVhT/i2MdfqgrL2ApXSgpM7T8QLpNciVgOuZjvooT3pZCcYyjIXzyIyjmf+tjjoQTk9ZWs3P8chTPXiLb5ImJGyM9wC4u+njYmkjsiFxFHbNG17MgyihVbDO/R6t+H2TAG6Afwtm3bJgv0lNKfOk/QanD9SfXvf/hXucpcl/WnzruhLTL4+oVP8foOpy5cKbUv48zhYcwsAEdOFZA92uOrzIVS6GRoS3rPZW70GT/90g4dlrdjdEuuXj1fJpQuKp2f4hO5FfEqPvzvcXxXtrlJhre48RGOpf+NTy5eVP3a47kIbUEvJwrLKs+RApk+pW33ihQNmciNuOFKr127hmp1GvtFP0IrJ4kMV7rdzW966CtqciUKGOOQmkwfY39O51IeH3m/f/Ulqv/5n8pvdmgOhRQuh9Rk+pu23av6NrfOD1f62ot+lEBqf/r0At751s+6+hM0HK6UYXqXLikdP5mhSandLFPicKUM01+0rHRELzgrfj+5Df1T27pJ9Fd9AnVG+StbHBz/3VtyH+3CSodhep+WlI5OVK5vMz8phVk6Zvvy8jIOHTok99EurHQYpvexP5HMMExfw0qHYRirsNJhGMYqrHQYhrHKpptIZhimt9lUSodhmN6nJfeKlIZJfdmkfl1W+DothmH6BZ7TYRjGKqx0GIaxCisdhmGswkqHYRirsNJhGMYqrHQYhrEKKx2GYazCSodhGKuw0mEYxiqsdBiGscozlY5e4kCfegkDfep6XUdls6/OE836MAzTf7ClwzCMVVjpMAxjFVY6DMNYhZUOwzBWYaXDMIxVWOkwDGMVVjoMw1iFlQ7DMFZhpcMwjFVY6TAMYxVP6ay2LMFcxrAe9LIHvZ3eD2HmGYbpH9jSYRjGIsD/ASAs8oYBfBNBAAAAAElFTkSuQmCC"
style="float: left; margin-right: 10px;" />
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< br > < br >
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Open a windows cmd and run the command (gcc --version)
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```
$ gcc --version
gcc.exe (Rev2, Built by MSYS2 project) 13.2.0
```
< br > < br >
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Using windows explorer, go to the folder C:\msys64\ucrt64\bin make a copy of the file **mingw32-make.exe** and name it **make.exe**
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< br >
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< br > < br >
### 3. Cross-Compiling
Using the windows CMD, go to the directory where you cloned or donwloaded this repository to the directory **neorv32\sw\example\demo_blink_led_asm**
< br > < br >
```
$ cd neorv32\sw\example\demo_blink_led_asm
```
< br >
< span style = "color:red" > Note: if you changed the location of the precompiled RISCV binaries, you need to modify the file "neorv32\sw\common\common.mk" at the line # 42:</ span >
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```
# Compiler toolchain
RISCV_PREFIX = ** < your directory to where you installed the prebuilt compiler > \riscv-none-elf-**
```
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Run the command **make all** (make sure all antivirus are disabled)
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```
$ make all
"Memory utilization:"
text data bss dec hex filename
432 0 0 432 1b0 main.elf
"Generationg APP BIN"
"OK - APP BIN"
"Generationg APP IMG VHD"
"OK - APP IMG VHD"
"Generationg RAW HEX"
"OK - RAW HEX"
"Generationg RAW BIN"
"OK - RAW BIN"
"Generationg BOOT IMG VHD"
"OK - BOOT IMG VHD"
"Memories Generated"
```
List the generated files and you will see
< br >
```
$ ls -l
-rw-rw-rw- 1 adriz 0 6781 2024-02-24 01:45 main.asm
-rw-rw-rw- 1 adriz 0 432 2024-02-24 01:45 main.bin
-rw-rw-rw- 1 adriz 0 8708 2024-02-24 01:45 main.elf
-rw-rw-rw- 1 adriz 0 5456 2024-02-23 16:14 main.S
-rw-rw-rw- 1 adriz 0 2764 2024-02-24 01:45 main.S.o
-rw-rw-rw- 1 adriz 0 274 2024-02-24 01:16 makefile
-rw-rw-rw- 1 adriz 0 1882 2024-02-24 01:45 neorv32_application_image.vhd
-rw-rw-rw- 1 adriz 0 1878 2024-02-24 01:45 neorv32_bootloader_image.vhd
-rw-rw-rw- 1 adriz 0 444 2024-02-24 01:45 neorv32_exe.bin
-rw-rw-rw- 1 adriz 0 432 2024-02-24 01:45 neorv32_raw_exe.bin
-rw-rw-rw- 1 adriz 0 972 2024-02-24 01:45 neorv32_raw_exe.hex
```
You have been able to Assemble assembly code for the RISCV on windows.
Go con the folder **neorv32\sw\example\demo_blink_led** which is the same example as the previous one but written on C code., and run the line "make all"
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```
$ make all
"Memory utilization:"
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text data bss dec hex filename
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1092 0 0 1092 444 main.elf
"Generationg APP BIN"
"OK - APP BIN"
"Generationg APP IMG VHD"
"OK - APP IMG VHD"
"Generationg RAW HEX"
"OK - RAW HEX"
"Generationg RAW BIN"
"OK - RAW BIN"
"Generationg BOOT IMG VHD"
"OK - BOOT IMG VHD"
"Memories Generated"
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```
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Now you have cross-compiled sucessfuly on windows for C and Assembly code.
If you go to the folder **neorv32\sw\example** , and run the command "make all" you will be able to build all the projects within this folder.
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Enjoy!
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# Linux Installation and example of cross compilation
### 1. Installation
Open shell and run:
```
sudo apt-get update
sudo apt-get install autoconf automake autotools-dev curl python3 python3-pip libmpc-dev libmpfr-dev libgmp-dev gawk build-essential bison flex texinfo gperf libtool patchutils bc zlib1g-dev libexpat-dev ninja-build git cmake libglib2.0-dev
git clone https://github.com/riscv/riscv-gnu-toolchain
cd riscv-gnu-toolchain/
mkdir build/
cd build
sudo mkdir /opt/riscv32im
sudo chown $USER /opt/riscv32im
./configure --with-arch=rv32im --prefix=/opt/riscv32im
make -j$(nproc)
```
### 2. Clone this repo
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Using shell, go to the directory where you cloned or donwloaded this repository to the directory **neorv32\sw\example\demo_blink_led_asm**
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```
$ git clone https://gitea.squirrelnut.synology.me:5001/FPGALover/neorv32
$ cd neorv32\sw\example\demo_blink_led
```
< span style = "color:red" > Note: if you changed the location of the RISCV compiler, you need to modify the file "neorv32\sw\common\common.mk" on the line # 448:</ span >
```
...
# Compiler toolchain
RISCV_PREFIX = ** < path where you installed your compiler under linux file system > /bin/riscv32-unknown-elf-**
...
```
### 3. Cross-Compile
Run the command **make all**
```
$ make all
Memory utilization:
text data bss dec hex filename
1012 0 0 1012 3f4 main.elf
Executable (neorv32_exe.bin) size in bytes:
1024
Installing application image to ../../../rtl/core/neorv32_application_image.vhd
```
List the generated files and you will see
```
$ ls -l
-rw-r--r-- 1 adrizcorp adrizcorp 18160 Feb 24 01:54 main.asm
-rw-r--r-- 1 adrizcorp adrizcorp 1012 Feb 24 01:54 main.bin
-rw-r--r-- 1 adrizcorp adrizcorp 4314 Feb 23 15:08 main.c
-rw-r--r-- 1 adrizcorp adrizcorp 7696 Feb 24 01:54 main.c.o
-rwxr-xr-x 1 adrizcorp adrizcorp 42856 Feb 24 01:54 main.elf
-rw-r--r-- 1 adrizcorp adrizcorp 141 Feb 23 15:08 makefile
-rw-r--r-- 1 adrizcorp adrizcorp 3704 Feb 24 01:54 neorv32_application_image.vhd
-rw-r--r-- 1 adrizcorp adrizcorp 1024 Feb 24 01:54 neorv32_exe.bin
-rw-r--r-- 1 adrizcorp adrizcorp 1012 Feb 24 01:54 neorv32_raw_exe.bin
-rw-r--r-- 1 adrizcorp adrizcorp 2277 Feb 24 01:54 neorv32_raw_exe.hex
```
Now you have been able to compile C code for the RISCV processor.
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Enjoy!
