Have you checked the Cyanogenmod Wiki?
Taken from the CyanogenMod website:
CyanogenMod is an aftermarket firmware for a number of cell phones based on the open-source Android operating system. It offers features not found in the official Android based firmwares of vendors of these cell phones.
CyanogenMod's supported devices list boasts more than 160 mobile devices and their variants, including phones, phablets, tablets, and other hardware.
Major version numbers parallel vanilla Android (often referred to as AOSP) in the following manner:
- CyanogenMod 6: Android 2.2 (Froyo)
- CyanogenMod 7: Android 2.3 (Gingerbread)
- CyanogenMod 9: Android 4.0 (Ice Cream Sandwich)
- CyanogenMod 10: Android 4.1 (Jelly Bean)
- CyanogenMod 10.1: Android 4.2 (Jelly Bean)
CyanogenMod 8 was reserved for Android 3.x (Honeycomb). Since the source code of Android 3.x was not made public until after Android 4.0 source was released, there was no CyanogenMod 8 release or development, because all development efforts went towards CyanogenMod 9.
Note that not all devices will necessarily receive official support from CyanogenMod. Similarly, devices may be dropped from further development for various reasons as new versions of Android are released (for example, the latest "stable" build for the Nexus One is CyanogenMod 7.2).