Re: Compaq EVO D500 "BTX Halted" Error, After Successful Instal

In the bios disable BIOS DMA.

John Baldwin ([e-mail]) wrote:
> 
> On 27-Jun-2002 Coreix Systems - BSD UNIX & Linux Networking, Development & Support wrote:
> > 
> > 
> > I have a Client who has supplied a Compaq EVO D500 For a gateway machine. 
> > Install BSD 4.5, Without a Problem, Successful Install..
> > However, On <REBOOT> Following BTX Error...
> > 
> > -
> > int=0000000d  err=00000000    efl=00030346    eip=0000c9c7
> > eax=00002020  ebx=00000001    ecx=00000200    edx=000013dd
> > esi=000008a6  edi=00014000    ebp=0000150c    esp=000014da
> > cs=f000       ds=ed03 es=ed03 fs=0000 gs=0000 ss=ed03
> > cs:eip=0f 20 dd 81 e5 00 f0 0f-20 c2 0f 01 e0 a8 01 75
> > ss:esp=00 40 01 00 a6 08 00 00-0c 15 00 00 fa 15 00 00
> > 
> > BTX halted
> > 
> > 
> > 
> > Can anyone shed any _light_ on what might be wrong here, We have installed 
> > SuSE linux on the machine and it Install's and Boot's fine...?
> 
> Does this machine have a RAID controller or any kind of funky disk
> controller that it is booting from?
> 
> The disassembly looks like:
> 
> 00000000  0F20DD            mov ebp,cr3
> 00000003  81E500F0          and bp,0xf000
> 00000007  0F20C2            mov edx,cr0
> 0000000A  0F01E0            smsw ax
> 0000000D  A801              test al,0x1
> 
> IOW, the BIOS on this thing is doing bad things by trying to enter
> protected mode on its own.  With paging even.  *sigh*  I wish BIOS
> writers would grow up and use the defined BIOS calls for accessing
> upper memory and what not instead of getting cute and doing it all
> themselves.  It prevents the BIOS from working in VM86 mode like we
> do in our boot process.  This really needs to be fixed by the BIOS
> writers if possible.
> 
> -- 
> 
> John Baldwin <[e-mail]>  <><  http://www.FreeBSD.org/~jhb/
> "Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/
> 
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