testbios loops?

[Li-Ta Lo]

On Fri, 2004-10-08 at 09:04, Dave Aubin wrote:
> Hi,
> 
>   Oh it does.  I just left that snippet out.  It starts at the correct
> place:) 
> 

Then there is a big problem. The code just to somewhere that is not
code (0000). Can you send more messages ?

Ollie

> -----Original Message-----
> From: Li-Ta Lo [mailto:ollie at lanl.gov] 
> Sent: Friday, October 08, 2004 11:02 AM
> To: Dave Aubin
> Cc: LinuxBIOS
> Subject: RE: testbios loops?
> 
> On Fri, 2004-10-08 at 08:58, Dave Aubin wrote:
> > Hi,
> 
> Why it starts from c000:fffd ? It should starts from c000:0003
> 
> Ollie
> 
> > 
> > It will first do this (I'm using the testbios -t option)
> > c000:fffd 0000                ADD       [BX+SI],AL
> >         AX=0200  BX=0000  CX=0000  DX=0080  SP=fff8  BP=0000  SI=0000 
> > DI=0000
> >         DS=0040  ES=0000  SS=0030  CS=c000  IP=0002   NV UP DI PL ZR
> NA
> > PE NC 
> > c000:ffff 000000              ADD       -86[DI],DL
> >         AX=0200  BX=0000  CX=0000  DX=0080  SP=fff8  BP=0000  SI=0000 
> > DI=0000
> >         DS=0040  ES=0000  SS=0030  CS=c000  IP=0004   NV UP DI NG NZ
> NA
> > PO NC 
> > c000:0002 74eb                JZ        ffef
> >         AX=0200  BX=0000  CX=0000  DX=0080  SP=fff8  BP=0000  SI=0000 
> > DI=0000
> >         DS=0040  ES=0000  SS=0030  CS=c000  IP=0005   NV UP DI NG NZ
> NA
> > PO NC 
> > c000:0004 4b                  DEC       BX
> >         AX=0200  BX=ffff  CX=0000  DX=0080  SP=fff8  BP=0000  SI=0000 
> > DI=0000
> >         DS=0040  ES=0000  SS=0030  CS=c000  IP=0006   NV UP DI NG NZ
> AC
> > PE NC 
> > c000:0005 37                  AAA
> >         AX=0306  BX=ffff  CX=0000  DX=0080  SP=fff8  BP=0000  SI=0000 
> > DI=0000
> >         DS=0040  ES=0000  SS=0030  CS=c000  IP=0008   NV UP DI PL NZ
> AC
> > PE CY
> > 
> > Then it will do this:
> > c000:0137 0d0a00              OR        AX,a
> >         AX=debf  BX=ffff  CX=0335  DX=0080  SP=ffef  BP=0000  SI=0004
> > DI=0002
> >         DS=0040  ES=0000  SS=0030  CS=c000  IP=013c   NV UP DI NG NZ
> NA
> > PO NC 
> > c000:013a 0000                ADD       [BX+SI],AL
> >         AX=debf  BX=ffff  CX=0335  DX=0080  SP=ffef  BP=0000  SI=0004
> > DI=0002
> >         DS=0040  ES=0000  SS=0030  CS=c000  IP=013f   NV UP DI NG NZ
> AC
> > PO CY 
> > c000:013c ba9198              MOV       DX,9891
> >         AX=debf  BX=ffff  CX=0335  DX=9891  SP=ffef  BP=0000  SI=0004
> > DI=0002
> >         DS=0040  ES=0000  SS=0030  CS=c000  IP=0140   NV UP DI NG NZ
> AC
> > PO CY 
> > c000:013f 96                  XCHG      AX,SI
> >         AX=0004  BX=ffff  CX=0335  DX=9891  SP=ffef  BP=0000  SI=debf
> > DI=0002
> >         DS=0040  ES=0000  SS=0030  CS=c000  IP=0141   NV UP DI NG NZ
> AC
> > PO CY 
> > c000:0140 91                  XCHG      AX,CX
> >         AX=0335  BX=ffff  CX=0004  DX=9891  SP=ffef  BP=0000  SI=debf
> > DI=0002
> >         DS=0040  ES=0000  SS=0030  CS=c000  IP=0146   NV UP DI NG NZ
> AC
> > PO CY 
> > c000:0141 9a9a8d9691          CALL      9196:8d9a
> >         AX=0335  BX=ffff  CX=0004  DX=9891  SP=ffeb  BP=0000  SI=debf
> > DI=0002
> >         DS=0040  ES=0000  SS=0030  CS=9196  IP=8d9c   NV UP DI NG NZ
> AC
> > PO CY 
> > 9196:8d9a 0000                ADD       [BX+SI],AL
> >         AX=0335  BX=ffff  CX=0004  DX=9891  SP=ffeb  BP=0000  SI=debf
> > DI=0002
> >         DS=0040  ES=0000  SS=0030  CS=9196  IP=8d9e   NV UP DI PL NZ
> NA
> > PE NC 
> > 9196:8d9c 0000                ADD       [BX+SI],AL
> >         AX=0335  BX=ffff  CX=0004  DX=9891  SP=ffeb  BP=0000  SI=debf
> > DI=0002
> >         DS=0040  ES=0000  SS=0030  CS=9196  IP=8da0   NV UP DI PL NZ
> NA
> > PE NC
> > 
> > I'm still looking for the openbios utility.  So far found broken 
> > links:( I can get some other bios to work, but they appear to be 
> > flacky.  I really think I should be using the one that came programmed
> 
> > on the board.
> > 
> > Thanks,
> > Dave
> > 
> > -----Original Message-----
> > From: Li-Ta Lo [mailto:ollie at lanl.gov]
> > Sent: Friday, October 08, 2004 10:53 AM
> > To: Dave Aubin
> > Cc: LinuxBIOS
> > Subject: Re: testbios loops?
> > 
> > On Fri, 2004-10-08 at 08:35, Dave Aubin wrote:
> > > Hi,
> > >  
> > >   I went back to trying to get the Nvida 6800gt card's bios, but 
> > > still
> > 
> > > even with dd -if=/dev/mem of=vgabios.rom skip=786432 bs=1 
> > > count=32768 I get the same binary as dd -if=/dev/mem of=vgabios.rom 
> > > skip=1536 count=64.
> > > I used dhex (free util) to verify they are the same.
> > >   What happens when I run them trough testbios is that once it is 
> > > done
> > 
> > > programming 0xc7fff it jump to 0x9 something or other and the video 
> > > bios isn't programmed correctly.
> > 
> > 
> > What do you mean by 'programming oxc7ff it jump to 0x9' ?
> > 
> > Ollie
> > 
> > 
> > 
> 
>