Changes
/* FDC Command Table (15 commands) */
|-
| Execution || colspan="8" | Head is positioned over proper cylinder
|}
{| class="wikitable"
|+ Invalid
|-
! !! D7 !! D6 !! D5 !! D4 !! D3 !! D2 !! D1 !! D0
|-
| command byte 0 || colspan="3" style="text-align: center;" | x || colspan="5" style="text-align: center;" | Invalid Codes
|-
| result byte 0 || colspan="8" | ST0: status register 0
|}
