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[Qemu-devel] Re: [PATCH] debugcon: support for debugging consoles (e.g.B

From: Sebastian Herbszt
Subject: [Qemu-devel] Re: [PATCH] debugcon: support for debugging consoles (e.g.Bochs port 0xe9)
Date: Sun, 22 Nov 2009 18:16:43 +0100

H. Peter Anvin wrote:
Add generic support for debugging consoles (simple I/O ports which
when written to cause debugging output to be written to a target.)
The current implementation matches Bochs' port 0xe9, allowing the same
debugging code to be used for both Bochs and Qemu.

Your implementation seems to miss the read part, unless you don't want to be
compatible with Bochs. user.dbk says:
"Reading from port 0xE9 will will return 0xe9 to let you know if the feature is 

- Sebastian

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