===== 02 DRD CD READ TIMES | BIOS 19951204 System ROM Version 3.0 11/18/96 A
BadVaddr as the group starts: 00000480
ReadN timing: the first INT1 and the gaps between them, single and double speed.
Switches (Test 21h, bit1 door open, bit0 head at POS0): int3 00 @21786. Getstat: int3 02 @39332. Mode 20. HINTMSK was 1F.
Single speed, mode 00, from sector 16: ReadN int3 02 @39527
  INT1 at: 11325319 11767719 12219143 12663511 13116055 13574007 14022631 14481559 14926791 15377495 15837319 16276071 16728023 17186039 17631271 18082343 18537703 18992839 19459911 19888727 20340679 20792775 21256535 21697927 (24)
  GetlocL: int3 00 02 39 02 00 00 08 00 @54913
  Pause: int3 22 @32334 int2 02 @3678046
Single speed again, mode 00, from sector 16: ReadN int3 02 @40343
  INT1 at: 14234903 14684983 15130791 15584231 16048007 16489111 16947511 17384951 17843431 18295399 18742055 19193927 19651927 20104279 20571399 21000615 21451271 21911255 22355575 22807687 23266215 23714231 24159511 24628855 (24)
  GetlocL: int3 00 02 39 02 00 00 08 00 @43292
  Pause: int3 22 @102589 int2 02 @4128860
Double speed, mode 80, from sector 16: ReadN int3 02 @45235
  INT1 at: 3295459 3494915 3723027 3969155 4168227 4396355 4636899 4857155 5072499 5316387 5522323 5751411 5991075 6212243 6426611 6669171 6904227 7110131 7330851 7582259 7788195 8011971 8242675 8461539 (24)
  GetlocL: int3 00 02 39 02 00 00 08 00 @43388
  Pause: int3 22 @48571 int2 02 @2016059
Double speed again, mode 80, from sector 16: ReadN int3 02 @25559
  INT1 at: 5637527 5877159 6084103 6304263 6556583 6755655 6975895 7199543 7430791 7671495 7882519 8102663 8335495 8564903 8783767 9005783 9253079 11725847 11929831 12154935 12405383 12603399 12832951 13072423 (24)
  GetlocL: int3 00 02 39 02 00 00 08 00 @43388
  Pause: int3 22 @23357 int2 02 @2006829
Single speed near the end, mode 00, from sector 118100: ReadN int3 02 @35108
  INT1 at: (0)
  GetlocL: int5 43 80 @36519
  Pause: int5 43 ..(2) @237708 none
Double speed near the end, mode 80, from sector 118100: ReadN int3 42 @43123
  INT1 at: (0)
  GetlocL: int5 43 80 @36662
  Pause: int5 43 ..(2) @25329 none
Mode 80 put back to 20: int3 42 @64584
Done.