Keyboard Notes:

1. The 64 keys under C0 through C7 occupy the same matrix position as in the C/64, as does the RESTORE key. Including SHIFT-LOCK, there are 66 such keys.
2. The extended keyboard consists of the 8 keys under the C8 output. Counting the CAPS-LOCK key, there are 9 new keys. The C/64 does not scan these keys.
3. The new CURSOR LEFT and CURSOR UP keys simulate a CURSOR plus RIGHT SHIFT key combination.
4. The keyboard mechanism will be mechanically similar to that of the C128.