Messages in this thread |  | | | From | Perry Harrington <> | | Subject | Re: useful ram on voodoo(2) cards? | | Date | Mon, 14 Dec 1998 10:09:01 -0800 (PST) |
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> > Folks, > > Strange thoughts which I'd be grateful if someone could clear up for me: > > a) is the 8/12Mb of ram on a voodoo/voodoo2 card read/write-able? [I'd > guess it should be writeable, given the card's function - but is it > readable?] > > b) If the answer to a) is 'yes'. Would it be possible to write a driver > which provided a /dev/voodooram file and permitted people to do: > > mkswap /dev/voodooram > swapon /dev/voodooram > > [Such a driver would presumably have to prevent simultaneous access to the > card for graphics purposes or we would have some funky displays whilst the > machine hosed itself.]
On the Banshee, the entire 16MB is accessible via the /dev/fb0 device when Vesa framebuffer is used.
> > And a subsidary question: given a), is this idea insufficiently ambitious > and could/should such RAM be usable as real system memory, not just fast > swap?
Fast swap. You're going over the PCI bus, and that's 33Mhz. Your maing memory bus is usually 60MHz+.
> > regards, > > jb >
--Perry
-- Perry Harrington Linux rules all OSes. APSoft () email: perry@apsoft.com Think Blue. /\
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