There are two ways to access ADB devices (keyboard, mouse, etc)
	eitehr by setting up enough 'glue' so that the ROM based routines
	rused under MacOS can be used (MRG_ADB), or by having code in the
	kernel to talk directly to the devices on the bus (HWDIRECT).

	HWDIRECT is really the better way to go, but some macs still
	require the older MRG_ADB approach.


		David/abs

   _.oXo._   Too complex to explain, too simplistic to admit.   _.oXo._
		

> Tue, 13 Jan 1998, Rodney M. Hopkins wrote:

> Date: Tue, 13 Jan 1998 22:51:49 -0600
> From: "Rodney M. Hopkins" <rhopkins@sunflower.com>
> To: port-mac68k@NetBSD.ORG
> Subject: MRG_ADB kernel option
> 
> What is the MRG_ADB kernel option?  Obviously I can read, but the given
> description "Use ROM-based ADB driver" means little to me.  Is this the
> hardware direct option I keep hearing people talk about in here or is this
> something different?
> 
> Also I notice by default the MRG_ADB option is off.  Why and what
> benefit/harm can having it off or on do?
> 
> Thanks in advance,
> 
> 
> Rodney Hopkins
> rhopkins@sunflower.com
>