[Open-graphics] VGA text mode C version

[Petter Urkedal]

On 2008-07-29, Timothy Normand Miller wrote:
> Small change to the PCI_TW_INFO bit assignment:
> 
> You have:
> 
> let   PCI_TW_INFO_TYPE_MASK	= 0x03000000
> let     PCI_TW_INFO_TYPE_ADDR	= 0x00000000
> let     PCI_TW_INFO_TYPE_RCOUNT	= 0x01000000
> let     PCI_TW_INFO_TYPE_WDATA	= 0x02000000
> 
> But I want to change it to be 1 to 3, like this:
> 
> parameter b_idle = 0;
> parameter b_addr = 1;
> parameter b_rcount = 2;
> parameter b_write = 3;

Thanks, I'll fix it, and add the license blurb which I forgot.  Also,
just change any other numbers to if it's easier to match with the
hardware; we can go though hqio.asm again after.