pci show

display 256 registers of pci device
input bus number,device number,function number
see the following program
develop environment visual c++ 6

Now I Open the source code
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void CPCIDlg::OnButton1()
{
CListCtrl *pListCtrl=(CListCtrl *)GetDlgItem(IDC_LIST1);
CString str;
int temp;
UpdateData(true);//get bus,dev,fun
for(int i=0;i<16;i++)
{
for(int j=1;j<=16;j++)
{
temp=GetResult(m_bus,m_dev,m_fun,i*16+j-1);
if(temp<16)
str.Format(\"0%X\",temp);
else
str.Format(\"%X\",temp);
pListCtrl->SetItemText(i,j,str);
}
}
}

int CPCIDlg::GetResult(int bus, int dev, int fun, int reg)
{
int i,j,temp;
i=reg/4;
j=reg-i*4;
j=j*8;
_asm{
pushad
mov eax,80h
sal eax,8
or  eax,bus
sal eax,5
or  eax,dev
sal eax,3
or  eax,fun
sal eax,6
or  eax,i
sal eax,2
mov dx,0cf8h
out dx,eax
mov dx,0cfch
in  eax,dx
mov ecx,j
and ecx,000000ffh
sar eax,cl
and eax,000000ffh
mov temp,eax
popad
}
return temp;
}

additional add the following code on function BOOL CPCIDlg::OnInitDialog()

CString str;
CListCtrl *pListCtrl=(CListCtrl *)GetDlgItem(IDC_LIST1);
pListCtrl->InsertColumn(0,\" \",LVCFMT_LEFT,30,0);
for(int i=1;i<17;i++)
{
str.Format(\"%X\",i-1);
pListCtrl->InsertColumn(i,str,LVCFMT_LEFT,30,i);
pListCtrl->InsertItem(i-1,str);
}