Subject: Re: 16mb limit on NetBSD 1.2 floppies?
To: Andrew Gillham <gillhaa@ghost.whirlpool.com>
From: Jason Thorpe <thorpej@nas.nasa.gov>
List: port-i386
Date: 07/02/1996 11:42:10
On Thu, 27 Jun 1996 14:21:01 -0400 (EDT) 
 Andrew Gillham <gillhaa@ghost.whirlpool.com> wrote:

 > This _might_ eliminate scenarios where a custom kernel or kernel
 > copy floppy has to be created.
 > Perhaps adding a config option EXTMEM_LIMIT that makes sure
 > the RAM size is <= EXTMEM_LIMIT.
 > So in the config file:
 > options		EXTMEM_LIMIT=15360	# Limit to 16MB (ISA DMA issue)
 > 
 > Maybe: (in sys/arch/i386/i386/machdep.c)
 > ...
 > #ifdef EXTMEM_LIMIT
 > 	if (biosextmem > EXTMEM_LIMIT)
 > 		biosextmem = EXTMEM_LIMIT;
 > #endif /* EXTMEM_LIMIT */
 > 
 > Just a thought.

This is a pretty good idea, actually.  I'll talk to JT about it...

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Jason R. Thorpe                                       thorpej@nas.nasa.gov
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