PORTIBM PC Portable (uses same BIOS as XT) 96EA-96EB - S3 Trio64 - MAJOR AXIS PIXEL COUNT 2
Desc:	specify the major axis length of the second edge for a Bresenham
	  trapezoid
Note:	the value programmed into this register is one less than the desired
	  width or major-axis length
SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 96E8h

96EAw RW  drawing control: major axis pixel count 2 (bits 11-0)