INT 7D - SCSILink - SEND COMMAND                                                
	AH = 02h
	ES:BX -> parameter block (see #03863)
Return: CF clear if successful
	CF set on error
	    AL = initiator error
	    AH = target error
Desc:	send the specified command block to the target device and perform any
	  related I/O


Format of SCSILink parameter block:
Offset	Size	Description	(Table 03863)
 00h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	size of command block
 04h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	address of command block (see #03864)
 08h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	size of buffer
 0Ch	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	address of buffer


Format of SCSILink command block:
Offset	Size	Description	(Table 03864)
 00h		info not yet available