[Open-graphics] bootstrapping the video mode

[Patrick McNamara]

Timothy Miller wrote:
> On 8/1/06, Patrick McNamara <wpmcnamara at yahoo.com> wrote:
>
>> On the SPI front, Timothy mentioned the possibility of an SPI EEPROM on
>> board already.  Suppose we have a 512byte EEPROM for config info and the
>> controller reads that plus another 512 bytes from the bus.  That second
>> part can be anything we want it to be.  My assumption is that it would
>> be from whatever was connected to the headers, 0xFF if nothing was there
>> as someone else mentioned.  The BIOS can then do whatever it needs to
>> with this info once the card is under processor control.
>
> Are you talking about a PROM on the board?  What's wrong with
> reserving some space in the one already on there?  Or am I missing
> something here?
>
> I like the idea of doing double-duty with the SPI bus for an external
> device.  But when it comes to storing anything on the board, we have a
> PROM already.
>
Yea, I couldn't remember what the on board memory situation was like 
right off hand.  Is the PROM serial or parallel?

Patrick M