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Date:      Mon, 28 Apr 2003 14:30:10 -0400 (EDT)
From:      John Baldwin <jhb@FreeBSD.org>
To:        Terry Lambert <tlambert2@mindspring.com>
Cc:        current@FreeBSD.org
Subject:   Re: i386/loader compiled with NOFORTH
Message-ID:  <XFMail.20030428143010.jhb@FreeBSD.org>
In-Reply-To: <3EA9ACB2.7D8504FF@mindspring.com>

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On 25-Apr-2003 Terry Lambert wrote:
> John Baldwin wrote:
>> > Yes, figured this out by myself already.  I've ended up
>> > uncommenting the "hints" line in GENERIC config, everything
>> > is OK now, and bzip2(1) also works, modulo the memory
>> > restrictions -- only level 1 bzipping works that requires
>> > ~250K of memory.
>> >
>> > John, is there a way to fix btx/loader/whatever so that
>> > heap memory is not limited to 640K?
>> 
>> Not really.  At least, not easily.  We load the kernel up above 1mb,
>> but we don't know how much memory lives up above 1mb and we assume
>> that there is enough for the kernel and that's it.
> 
> You are limited to what you can access in real mode, without
> Gate A20 (16M, at which point the address space wraps).

The loader doesn't run in real mode.

-- 

John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/



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