===== 02 RSV RESERVED BITS | BIOS 19951204 System ROM Version 3.0 11/18/96 A
BadVaddr as the group starts: 1F801DAA

Reserved bits, written and read back (the register put back at once):
EXP1 base 1F0000FF: wrote 1F0000FF, read 1F0000FF, put back 1F000000, read 1F000000
EXP1 base 1F000001: wrote 1F000001, read 1F000001, put back 1F000000, read 1F000000
EXP1 base 1F07FFFF: wrote 1F07FFFF, read 1F07FFFF, put back 1F000000, read 1F000000
EXP2 base 1F802001: wrote 1F802001, read 1F802001, put back 1F802000, read 1F802000
EXP2 base 1F802080: wrote 1F802080, read 1F802080, put back 1F802000, read 1F802000
EXP1 delay bits 14-15: wrote 0013E43F, read 0013E43F, put back 0013243F, read 0013243F
EXP1 delay bits 21-23: wrote 00F3243F, read 0013243F, put back 0013243F, read 0013243F
EXP1 delay bits 24-27: wrote 0F13243F, read 0F13243F, put back 0013243F, read 0013243F
EXP1 delay bit 29: wrote 2013243F, read 2013243F, put back 0013243F, read 0013243F
EXP1 delay low 16 all set: wrote 0013FFFF, read 0013FFFF, put back 0013243F, read 0013243F
EXP3 delay bits 14-15: wrote 0000F022, read 0000F022, put back 00003022, read 00003022
EXP3 delay bits 21-23: wrote 00E03022, read 00003022, put back 00003022, read 00003022
EXP3 delay bits 24-27: wrote 0F003022, read 0F003022, put back 00003022, read 00003022
EXP3 delay bit 29: wrote 20003022, read 20003022, put back 00003022, read 00003022
EXP3 delay low 16 all set: wrote 0000FFFF, read 0000FFFF, put back 00003022, read 00003022
EXP3 delay all zero: wrote 00000000, read 00000000, put back 00003022, read 00003022
COM_DELAY bits 16-17 cleared: wrote 00001325, read 00001325, put back 00001325, read 00001325
COM_DELAY bits 16-31 set: wrote FFFF1325, read 00031325, put back 00001325, read 00001325
COM_DELAY bit 18 set: wrote 00041325, read 00001325, put back 00001325, read 00001325
Done.