"Brian L. Stuart" <blstuart at bellsouth.net> wrote: Depends a lot on the actual implementation methinks. What may be true for the original sbus card may well have changed with more modern, integrated versions. Like I said, the cg3 in a SPARCclassic natively supports at least 1152x900 at 66 and 76 Hz and 1024x768 at 60, 70 and 77 - I don't know for the SS5, but when you navigate to the framebuffer node in the OBP prompt (like /iommu at 0,1000000/sbus at 0,10001000/cgthree at 3,0) and do "words" there, anything starting with "r" followed by a mode description should be a supported mode that you can specify for output-device (like screen:r1024x768x60, which is what I would try) Beyond that, there is always the opportunity of hacking an unsupported resolution in by computing the corresponding numbers and generating a resolution setup word by yourself. They basically just contain a mode line like " 08,02,37,37,08,155,21,04,39,169,0,7,60,1024,768" (for 1024x768x60) which is a bunch of setup values that are poked into registers on the framebuffer by the setup FCode. Arno