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@@ -77,4 +77,7 @@ access the bootloader you must then desolder the battery.
 * [CH583 Evaluation Board SDK](https://github.com/openwch/ch583)
 
 * [Open Source Toolchain for CH582/CH583](https://github.com/cjacker/opensource-toolchain-ch32v)
+  
+  * Moonriver toolchain contains an older xpack and a custom openocd.
 
+  * The more recent xpack toolchain changes using `riscv-none-elf-` as PREFIX in the Makefile instead of `riscv-none-embed-`. This target also requires to activate extensions seperately by setting `-march=rv32imac_zicsr` instead of `-march=rv32imac`