[Coco] Above 512k upgrades

[John W. Linville]

On Tue, Aug 14, 2007 at 02:59:48PM -0400, jdaggett at gate.net wrote:

> On 14 Aug 2007 at 13:39, John W. Linville wrote:



> > Yes, but I think you miss the point of my question.  As I recall, if

> > you merely extend the MMU entries to the natural 8-bits then you will

> > still have to keep your video in the 0th 512k block.  To be able to

> > allocate video frames beyond the first 512k you need a means to extend

> > the video addressing as well.



> Correct. The current GIME would sees only one 512K block. There is no real need to extend 

> the video addressing beyond what it currently sees unless you are interested in higher video 

> resolutions and/or greater color depth than currently available. Either case requires a GIME 

> redesign and preferably a faster MPU. 


...or to allocate frame buffers outside of the lowest 512k, which
requires no such redesign...

John
-- 
John W. Linville
linville at tuxdriver.com