[Coco] Above 512k upgrades

[Mark Marlette]

John,

FF9B is the video page register, that flips the 512k page.......see  
james....... :)

Mark
Cloud-9

Quoting "John W. Linville" <linville at tuxdriver.com>:


> On Tue, Aug 14, 2007 at 06:55:20AM -0500, Mark Marlette wrote:

>

>> As extra register are available they are not needed unless you go

>> beyond 2MB limit. The MMU and it's task registers are 6 bits wide and

>> all you have to do is tack on the 2 bits to each and then update your

>> refresh cycle.

>

> IIRC, isn't there something about the video memory offsets that needs

> to be handled as well?  Sorry, I don't have a GIME reference handy

> to ask a more specific question...

>

> John

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> John W. Linville

> linville at tuxdriver.com

>

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