INT D4 - PC-MOS/386 v5.01 - GET CURRENT PROGRAM NAME                            
	AH = 1Dh
	BX = task ID (FFFFh for current task) (see AH=19h)
	ES:DI -> buffer for program name (see #04016)
Return: CF clear if successful
	    ES:DI buffer filled
	CF set on error
	    AX = error code (see #01680 at INT 21/AH=59h/BX=0000h)
SeeAlso: AH=19h,AH=1Eh


Format of PC-MOS/386 program name buffer:
Offset	Size	Description	(Table 04016)
 00h  8 BYTEs	filename
 08h  3 BYTEs	extension