hard1k wrote:blurks wrote:Interesting. Didn't know that the board layout allowed for interchangeability of the chipset. Chipsets must be completely pin-compatible to each other.
Funny how this exact question interested me a month ago. At that moment I found the explicit notion of pin compatibility between the 86C775 and 86C375 in their datasheets, and now this picture proves that.
Attention all you Quantum3D fans, I'll show you something interesting related to this topic sometime soon, in the course of a month or so. Stay tuned 😀
Well, it has turned out to be faster than expected.
So, please meet the unique newly made 2D module for the Q3D Obsidian 100SB/200SB, based on the S3 Virge/DX - for the ultimate one-slot SLI Glide+S3d combo:
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As you may know, the original module was based on the Alliance AT25 chip with only 2 Mb of RAM, not to mention it's being unobtainium (but I also have it in my collection):
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The newly made one has the full 4 Mb onboard, while also adding the S3d capability to the Obsidian for the ultimate Terminal Velocity experience 😁
Originally this module was designed for the S3 Trio64V2/DX, that's why I wondered if those chips are pin compatible, and they are. So after confirming this, the chip was replaced in order to bring the S3d, and here it is!