INT 13 U - ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE. FIXED DISK - GET DEVICE STATUS AX = 1C09h DL = drive (80h,81h) ES:BX -> buffer for Device Status Block (see #00259) Return: CF set on error CF clear if successful AH = status (see #00234 at AH=01h) SeeAlso: AX=1C08h,AX=1C0Ah,PORTIBM PC Portable (uses same BIOS as XT) 3510h"ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE." Format of ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE. Device Status Block: Offset Size Description (Table 00259) 00h BYTE 08h 01h BYTE number of words in block (09h) 02h BYTE error flags 03h BYTE unused 04h BYTE command error code (see #00255) 05h BYTE command status code (see #00256) 06h WORD ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE. standard status 08h 5 WORDs ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE. vendor-specific status codes