The "Video Architecture Group" mentioned in the vendor ID of the output above appears to be an internal division of Apple (as noted on the last page of http://web.media.mit.edu/~vmb/papers/tuna94.pdf). Also seeing "Xilinx" in the output potentially indicates the video output is controlled by that chip as mentioned in the component list below.
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===Video Architecture Group===
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The "Video Architecture Group" mentioned in the vendor ID of the output above appears to be an internal division of Apple (as noted on the last page of http://web.media.mit.edu/~vmb/papers/tuna94.pdf). Also seeing "Xilinx" in the output potentially indicates the video output is controlled by that chip as mentioned in the component list below. We can also reference this interview with Nick Baker who was a member of this team at Apple:
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After graduating from Imperial College London in 1990 he found his way to Apple and worked on the team that tried to create a specialized video card. He then went to 3DO where he worked on their high-end gaming system which, unfortunately, failed in the market.
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>> Nick Baker: The Video Products Group got split up. It was more a Video Architecture Group. I can't remember exactly what we called ourselves. But we were looking at more focused on pulling in video onto the motherboard. So as you--as Apple computers came out, they had video capability being built into the motherboard. We were speccing those chips. We weren't necessarily doing the designs ourselves anymore. It was working with Phillips and others to do the silicon.
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>> Nick Baker: For base band video back then it was NTSC Pal. HD was still far off. From that standpoint it was at least supporting uncompressed video. It was as good as probably you needed for a while. We put in architectures to have a parallel pixel bus so the role band would suddenly need to go through main memory, for example. And then probably the idea was to have a slot that you could addin a compression card, for example, that somebody else could do. But if you looked back at the last 10 years, then it's been quite an explosive raise of growth there in the capabilities.
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As seen in the above information, the team worked with Philips for the actual board components. The section below mentions the Philips SAA-7188A-WP component on the STB3 board. Our assumption is that Philips component might be responsible for the actual video output hardware.