68kMLA Classic Interface

This is a version of the 68kMLA forums for viewing on your favorite old mac. Visitors on modern platforms may prefer the main site.

Click here to select a new forum.
Guess the NuBus card
Posted by: slomacuser on 2026-06-10 08:14:56 Some more info
Posted by: Phipli on 2026-06-10 08:27:53 Some more info 1024*769? Bonus row of pixels!
Posted by: slomacuser on 2026-06-10 09:13:20 1024*769? Bonus row of pixels! Yes interesting resolution I tought it would be something like 1152 x 870
Posted by: joevt on 2026-06-10 14:43:54 The memory dump shows the framebuffer at offset 0 which has a B&W checkerboard pattern that is 128 bytes wide = 1024 pixels, 769 lines. The decldata is 4K at offset 0x30000 (192K) The decldata uses 2 of the 4 byte lanes so its actual data is 2K. The decldata repeats 16 times until offset 256K where the framebuffer exists again. This 256K window repeats 64 times in the 16 MB slot window except for some small differences. - They may be scan line counters or stuff like that which changes rapidly - or maybe they're just floating values. The corners of the framebuffer show square instead of rounded corners? Your photo does not show the corners of the display. Attached the SlotsParse output. It's a very small amount of data. Just one vendor info, one driver, and one display resolution.
Posted by: Phipli on 2026-06-10 14:49:03 The corners of the framebuffer show square instead of rounded corners? Your photo does not show the corners of the display. It's a 1bit card - I'd suspect the photo is of the output from a different source.
Posted by: joevt on 2026-06-10 16:03:22 It's a 1bit card - I'd suspect the photo is of the output from a different source. Right. The display in the photo cannot be the display connected to this graphics card. The display is just grey checkerboard.
Posted by: slomacuser on 2026-06-10 22:58:41 yes. I do not have a monitor connected to this card. The pictures are from internal IIci video.
< 2