Working:
30693050  1770 - Write Command Register: WaitForSpinUp T00 S43 +000 (+0x00); Cmd: 0x10; Status: 0x05 (Bu L/0); Data: 1 (0x01); DRQ=0 INTRQ=0; turbo_state: None
33105060  1770 - FinishCommand T01 S43 +000 (+0x00); Cmd: 0x10; Status: 0x20 (R/S); Data: 1 (0x01); DRQ=0 INTRQ=1; turbo_state: None
33114970  1770 - Control Register: Reset=1; DDEN=0; drive=0, side=0
33114980  1770 - Write Sector Register: Wait T01 S00 +000 (+0x00); Cmd: 0x00; Status: 0x80 (Mo); Data: 0 (0x00); DRQ=0 INTRQ=0; turbo_state: None
33114990  1770 - Write Command Register: ReadSector T01 S00 +000 (+0x00); Cmd: 0x94; Status: 0xA1 (Bu R/S Mo); Data: 0 (0x00); DRQ=0 INTRQ=0; turbo_state: None
33175596  1770 - SetDRQ: ReadSectorReadByte T01 S00 +000 (+0x00); Cmd: 0x94; Status: 0x83 (Bu D/I Mo); Data: 0 (0x00); DRQ=1 INTRQ=0; turbo_state: None
33175728  1770 - SetDRQ: ReadSectorReadByte T01 S00 +001 (+0x01); Cmd: 0x94; Status: 0x83 (Bu D/I Mo); Data: 0 (0x00); DRQ=1 INTRQ=0; turbo_state: None
33175860  1770 - SetDRQ: ReadSectorReadByte T01 S00 +002 (+0x02); Cmd: 0x94; Status: 0x83 (Bu D/I Mo); Data: 0 (0x00); DRQ=1 INTRQ=0; turbo_state: None
[...]
33209124  1770 - SetDRQ: ReadSectorReadByte T01 S00 +254 (+0xFE); Cmd: 0x94; Status: 0x83 (Bu D/I Mo); Data: 0 (0x00); DRQ=1 INTRQ=0; turbo_state: None
33209256  1770 - SetDRQ: ReadSectorReadByte T01 S00 +255 (+0xFF); Cmd: 0x94; Status: 0x83 (Bu D/I Mo); Data: 0 (0x00); DRQ=1 INTRQ=0; turbo_state: None
33209386  1770 - got sector: ReadSectorNextByte T01 S00 +000 (+0x00); Cmd: 0x94; Status: 0x81 (Bu Mo); Data: 0 (0x00); DRQ=0 INTRQ=0; turbo_state: None
33209990  1770 - SetDRQ: ReadSectorReadByte T01 S01 +000 (+0x00); Cmd: 0x94; Status: 0x83 (Bu D/I Mo); Data: 0 (0x00); DRQ=1 INTRQ=0; turbo_state: None
33210122  1770 - SetDRQ: ReadSectorReadByte T01 S01 +001 (+0x01); Cmd: 0x94; Status: 0x83 (Bu D/I Mo); Data: 0 (0x00); DRQ=1 INTRQ=0; turbo_state: None
[...]
33518670  1770 - SetDRQ: ReadSectorReadByte T01 S09 +254 (+0xFE); Cmd: 0x94; Status: 0x83 (Bu D/I Mo); Data: 10 (0x0A); DRQ=1 INTRQ=0; turbo_state: None
33518802  1770 - SetDRQ: ReadSectorReadByte T01 S09 +255 (+0xFF); Cmd: 0x94; Status: 0x83 (Bu D/I Mo); Data: 5 (0x05); DRQ=1 INTRQ=0; turbo_state: None
33518932  1770 - got sector: ReadSectorNextByte T01 S09 +000 (+0x00); Cmd: 0x94; Status: 0x81 (Bu Mo); Data: 5 (0x05); DRQ=0 INTRQ=0; turbo_state: None
35918938  1770 - FinishCommand T01 S10 +000 (+0x00); Cmd: 0x94; Status: 0x98 (CRC RNF Mo); Data: 5 (0x05); DRQ=0 INTRQ=1; turbo_state: None


Not working:
69942332  1770 - Write Track Register: IdleWithMotorOff T42 S01 +000 (+0x00); Cmd: 0x80; Status: 0x00; Data: 0 (0x00); DRQ=0 INTRQ=0; turbo_state: None
69942338  1770 - Write Sector Register: IdleWithMotorOff T42 S43 +000 (+0x00); Cmd: 0x80; Status: 0x00; Data: 0 (0x00); DRQ=0 INTRQ=0; turbo_state: None
69943087  1770 - Write Command Register: WaitForSpinUp T42 S43 +000 (+0x00); Cmd: 0x10; Status: 0x01 (Bu); Data: 1 (0x01); DRQ=0 INTRQ=0; turbo_state: None
72835256  1770 - FinishCommand T01 S43 +000 (+0x00); Cmd: 0x10; Status: 0x24 (L/0 R/S); Data: 1 (0x01); DRQ=0 INTRQ=1; turbo_state: None
72835357  1770 - Control Register: Reset=1; DDEN=0; drive=0, side=0
72835367  1770 - Write Sector Register: Wait T01 S00 +000 (+0x00); Cmd: 0x00; Status: 0x80 (Mo); Data: 0 (0x00); DRQ=0 INTRQ=0; turbo_state: None
72835377  1770 - Write Command Register: ReadSector T01 S00 +000 (+0x00); Cmd: 0x94; Status: 0xA1 (Bu R/S Mo); Data: 0 (0x00); DRQ=0 INTRQ=0; turbo_state: None
75295384  1770 - FinishCommand T01 S00 +000 (+0x00); Cmd: 0x94; Status: 0xB8 (CRC RNF R/S Mo); Data: 0 (0x00); DRQ=0 INTRQ=1; turbo_state: None