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Date:      Sun, 20 Jul 2003 23:38:51 -0700
From:      Pascal Dornier <pdornier@pcengines.ch>
To:        freebsd-bugs@FreeBSD.ORG
Subject:   boot1.s hangs on system without keyboard controller
Message-ID:  <5.2.0.9.0.20030720233315.01f98ec0@pcengines.ch>

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File: src/sys/boot/i386/boot2/boot1.s

The code to enable A20 gate will hang on "legacy free" systems without a
keyboard controller at port 60 / 64.

Suggest adding some sort of time-out to proceed anyway if expected reply
does not come within a reasonable time. Or bail immediately if FF is read.

Thanks !

Pascal Dornier
www.pcengines.ch/wrap.htm


Pascal Dornier   pdornier@pcengines.ch     http://www.pcengines.ch
Your Spec + PC Engines = Custom Embedded PC Hardware



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