INT 62 u - FGDRIVER v4.02 - "FG_MOUSEPOS" - GET CURRENT MOUSE POSITION
	AX = 007Ah
	ES:BX -> variable pointer record (see #03491)
Note:	the FGDRIVER functions are rearranged with each major release, but
	  their parameters do not change (see #03474 at AX=0000h)
SeeAlso: AX=0079h


Format of FGDRIVER MOUSEPOS variable pointer record:
Offset	Size	Description	(Table 03491)
 00h	WORD	segment of WORD buffer for mouse column
 02h	WORD	offset of WORD buffer for mouse column
 04h	WORD	segment of WORD buffer for mouse row
 06h	WORD	offset of WORD buffer for mouse row
 08h	WORD	segment of WORD buffer for button status
 0Ah	WORD	offset of WORD buffer for button status
Note:	button status: bit 0 = left button, bit 1 = right, bit 2 = middle