On 6/5/07, Brad Boyer <[EMAIL PROTECTED]> wrote:
On Mon, Jun 04, 2007 at 10:55:42PM -0700, Brian Morris wrote:
≈≈
> when i tried on mine i did not realize that (appears) the framebuffer > is named "MAC" (so kernel indicates choices of either that or "Valkyrie" > which is correct for 630 but not for 650, but the name that the system > provides is *not* "Mac" rather some obscure four letter acronym ≈ The generic driver is "macfb" and will try to use whatever your main display was before booting in whatever mode it was already in. The
this prior resolution setting is the same in the power macs, even with specific fb drivers, so likewise the valkyrie of course.
four letter acronym you saw is DAFB, which is the name of the particular hardware in the Q650 (among others).
well I wondered if it were a real chip or simply a generic name like "Mac". seems to just stand for "Digital/Analog Frame Buffer"
The macfb driver is similar to the vesafb driver on the PC side in that it can provide a basic display, but it doesn't always give you the full hardware capabilities. The only full native driver we have for an m68k Mac is valkyrie (Q630) since this hardware is also present in some PowerMac models. Writing better video drivers is honestly not a high priority for most people involved, but if you're interested in it there are people here who could provide advice.
well my priority is with the q630 to have keypad support and xemacs X support first (to support my goal use it as educational development platform, exploiting the uniformity of "debian is debian"). also seems there is some other bottleneck on 630 which causes for instance very slow some Xapps which do work such as pdf viewers (looks like ~20% the speed of macos which seems unreasonable especially considering other things that work OK, although better than totally broken it is not exactly useable). Just for reference none of these software problems (other than the keypad) appear to have any relation to video either X or kernel as same problems if running client remote on the ppc Xservers... my 605 (transposed to "650" above) I thought to try headless (because it has the on/off switch), even though capable of higher resolutions I did notice it slow drawing even on the console. at some point I might like to practice my C and sort of physics I guess, I might look at least at the basic framebuffer support in kernel. It *is* nice to have 1024x768 on console, and higher is possible if buy VRAM... Brian ≈
