0x400-0x4FF Standard read/write 10 01 10XX 0xD80-0xDBF Standard read-only 11 01 11XX 0x5C0-0x5FF Custom read/write 11 11 0XXX 0xB00-0xB7F Standard read/write 01 00 XXXX 0x000-0x0FF Standard read/write 10 11 12 13 14 15 16-17 18 19 20 21 22 23 (See text) Writable Writable Read-only 0 Read-only 0 Read-only 0 Read-only 0 Read-only 0 Writable
Eben