diff --git a/src/mame/cccp/README.md b/src/mame/cccp/README.md
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+# **src/mame/cccp** #
+
+СССР - Сою́з Сове́тских Социалисти́ческих Респу́блик (USSR)
+Driver files for hardware made in the Soviet Union. With some overlap for newer ones that are still on typical Soviet-era hardware.
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diff --git a/src/mame/ddr/README.md b/src/mame/ddr/README.md
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+# **src/mame/ddr** #
+
+DDR - Deutsche Demokratische Republik
+Driver files for hardware made in East Germany, before the German unification.
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