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Home▸ Forums▸ 68kMLA▸ Homebrew microcomputers & video generation — #54
Post #54 by Bunsen
Source Forum68kMLA
CategoryHardware
Post DateSun, 14 Apr 2013 - 12:28
Original URLhttps://68kmla.org/bb/threads/homebrew-microcomputers-amp-video-generation.27426/
Post
Incidentally, the paragraph following Sprite's quote above:

Later on, I'd changed my mind: it would probably be more challenging but in the end more satisfying and universal to make a kernel frame buffer driver. This way, when I would plug in the GPU, the kernel would recognize it and create a framebuffer device. A framebuffer device is an abstract representation of a graphic card plus display, and there are a lot of programs which can talk to that: MPlayer, image viewing tools and even X.org. Getting X.org running on the device made things much simpler: any program I would want to run, including webbrowsers and Macintosh emulators, could run on top of that without any modifications to the programs themselves. So I took to work, and the result was nice to look at: Firefox, running on my workstation, could render itself to a second X session and into the classic CRT of the Mac.
So there you have something fairly cool - with a $12 LPC dev board and a little soldering, your boxmac is now a plug & play external USB monitor (for *nix/X11 systems only), even without the main CPU in Sprite's SE/ARM. Albeit a somewhat slow one, if you follow his design to the letter. A faster micro - one with USB2.0 device, in particular - should get you something more performant.