RBIL61 - INT 15 - SYSTEM - FORMAT UNIT PERIODIC INTERRUPT (PS ESDI drives only) {callout or callback}

INT 15 C - SYSTEM - FORMAT UNIT PERIODIC INTERRUPT (PSIBM PS/2, any model 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. drives only)
	AH = 0Fh
	AL = phase code
	    00h reserved
	    01h surface analysis
	    02h formatting
Return: CF clear if formatting should continue
	CF set if formatting should terminate
Note:	called during 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. drive formatting after each cylinder is completed
SeeAlso: INT 13/AH=1Ah