Category: video

INT 10 - EGA Register Interface Library - READ ONE REGISTER

	AH = F0h
	BL = register number
	BH = 00h
	DX = group index (see #00223)
Return: BL = data
Note:	the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
	  compatibility box, and others; it is used for software virtualization
	  of write-only registers on an EGA video adapter, so that multiple
	  programs may peacefully coexist without clobbering each other's
	  display settings
SeeAlso: AH=F1h"EGA",AH=F2h"EGA",AH=FAh"EGA",INT 2F/AX=BC00h