Hi everybody,
This has not much to do with the OpenBIOS project, but with low level programming. Everyone here seems to know lot of things in this domain, that's why i'm asking to all of u those questions :
- Can we setup a VESA 2 (not VESA 3 !) configuration (select video
mode, and everything) without making a int 0x10 ? We're programming a protected mode OS, and switching to VM86 sucks. I know it's possible with VESA 3, but with VESA 2 ? If yes, do you have any docs about it ?
I think it is NOT possible without INT 10. Have a look at Ralph Brown's Interrupt list: http://www.cs.cmu.edu/afs/cs.cmu.edu/user/ralf/pub/WWW/files.html and look at INT 10/AX=4F0A.
Is the int 0x10 VESA code specific to each graphic card ?
No.
- I've got a problem with DMA programming, here's my source :
(....) I use it to transfer a sector from the floppy disk. Do you see anything wrong in this code ? The transfer is not made by the floppy, and i don't know why... I don't know if it's in the DMA programming, or in the floppy driver ..............
I'm not sure, but I think the floppy don't support DMA and it is as default disabled by the floppy controller.
Help !
Thanks,
Thomas, from france
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