Does anyone has text console or framebuffer working on SC1200 without VGA-BIOS ?
ron minnich
rminnich at lanl.gov
Tue Sep 23 15:22:01 CEST 2003
On Tue, 23 Sep 2003, Bernd Mödeker wrote:
> the internal vga pci device at 0:12.4 should be found when you write
> 0x80009400 to pci index reg
> 0xcf8. After that the value 0x0504100b should be returned at 0xcfc as vendor
> id (0x100b) and device id (0x0504).
> After single stepping this return value AX is set to 0x4000 and not 0x100b.
> Unfortunaly EAX is not printed:
>
> c000:0124 ed IN EAX,DX
> c000:124 -
> AX=4000 BX=0000 CX=0000 DX=0cfc SP=ffea BP=0000 SI=0000
> DI=0000
> DS=0000 ES=c000 SS=0030 CS=c000 IP=0126 NV UP DI PL ZR NA PE
> NC
>
you're not going to get eax in an 8086. This is an issue.
I wonder if there is an enable for the vga device that we are not setting.
ron
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