Date: Sun, 14 Sep 2008 14:34:52 -0700 From: Xin LI <delphij@delphij.net> To: "Carlos A. M. dos Santos" <unixmania@gmail.com> Cc: FreeBSD Current <current@freebsd.org>, olli@FreeBSD.org Subject: Re: Why VESA and DPMS are available only for i386? Message-ID: <48CD837C.9050206@delphij.net> In-Reply-To: <e71790db0809021849q1c22690sec4f3c6e7f5f8b34@mail.gmail.com> References: <e71790db0809021849q1c22690sec4f3c6e7f5f8b34@mail.gmail.com>
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Carlos A. M. dos Santos wrote: > Hello, > > Several PRs were closed based on the argument that FreeBSD/amd64 > cannot call to the VESA BIOS. XFree86 solved this problem by means of > the INT10 module. I believe that it would be possible to do the same > on the FreeBSD kernel. > > Is there any ongoing effort to enable the VESA kernel moule on > non-i386 platform? Is there any particular difficulty for doing this, > besides depending on VM86? > According to VESA's VBE 3.0 standard, there is a "Protected Mode Entry Point" [optionally] provided by BIOS, which OS or application is supposed to copy to a place where it is writable. The code there would be written in 16-bit protected mode. Therefore I think it's do-able... http://www.vesa.org/public/VBE/vbe3.pdf Cheers,
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