INT 1E - Disk Initialization Parameter Table Vector

	- not an interrupt, but a far pointer to the diskette base table
	- this table contains initialization parameters for the disk
	  controller used during formatting, reading, and writing to a disk

	Disk Initialization Parameter Table Vector Definition:

	Offset	   Description

	  00  |7|6|5|4|3|2|1|0|  Disk Controller Mode byte 1
	       | | | | `----------  head step rate in milliseconds (0-F)
	       `-----------------  head unload time in milliseconds (0-F)

	  01  |7|6|5|4|3|2|1|0|  Disk Controller Mode byte 2
	       | | | | | | | `---- DMA flag (0 = use DMA)
	       `----------------- (head load time/2)-1 in milliseconds

	  02  clock ticks until motor off
	  03  FM or MFM Mode:  Log2 (Bytes per Sector/128)
	      FM=Frequency Modulation used on single-density disks
	      MFM=Modified Frequency Modulation used on double-sided disks
	  04  last sector on track
	  05  gap length in bytes:

		     Bytes Per	 Sectors     Write    Format
	      MFM     Sector	Per Track     Gap	Gap
	       1	256	    18	      0Ah	0Ch
	       1	256	    16	      20h	32h
	       2	512	     8	      2Ah	50h
	       2	512	     9	      1Bh	6Ch
	       3       1024	     4	      80h	F0h
	       4       2048	     2	      C8h	FFh
	       5       4096	     1	      C8h	FFh

	  06  disk data length
	      80h for 128 bytes/sector
	      FFh otherwise
	  07  gap length when formatting
	  08  data pattern used during formatting
	  09  floppy head bounce delay (in milliseconds)
	  0A  floppy motor start delay (in 0.125 second intervals)
	  0B  floppy motor stop delay (in 0.25 second intervals)

	- see INT 13,18