INT 4D - TI Professional PCIBM PC - DISK - GET STATUS OF LAST OPERATION
	AH = 01h
	DL = drive (bit 7 set for hard disk)
Return: CF clear if status unchanged
	CF set if status changed since last call
	AH = 00h
	AL = status of previous operation (see #00234 at INT 13/AH=01h)
Notes:	this function is nearly the same as INT 13/AH=01h on a standard PCIBM PC BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly.
	the TI's BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. tranparently performs a number of retries, and an error
	  status is only reported if all of the retries fail.  To get the error
	  status if the operation succeeded on a retry, use AH=07h instead
SeeAlso: AH=00h,AH=07h,INT 13/AH=01h