0040h:0074h         Last Fixed Disk Operation Status                  

        BYTE

            00h     No error
            01h     Invalid command
            02h     Address mark not found
            03h     Attempt to write on write-protected disk
            04h     Sector not found
            05h     Reset failed
            07h     Drive parameter activity failed
            08h     DMA overrun
            09h     Attempt to DMA across 64K boundary
            0Ah     Bad sector flag detected
            0Bh     Bad cylinder found
            0Dh     Invalid number sectors on format
            0Eh     Control data address mark detected

            0Fh     DMA arbitration level out of range
            10h     ECC error detected
            11h     ECC corrected data error
            20h     Controller failure
            40h     Seek failure
            80h     Time out
            AAh     Drive not ready
            BBh     Undefined error
            CCh     Write fault
            E0h     Status error
            FFh     Sense operation failed


Copyright © 1985 to 2022 Beta Systems                            Last modified: Wednesday, January 05, 2022 .