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Yellowstone Disk Controller Begins Second Production Run

I’m happy to report that BMOW’s Yellowstone Universal Disk Controller for Apple II computers is beginning its second production run. I’d long thought that Yellowstone would be a once-and-done project, because a key chip used in its design became unobtainable anywhere late during the development phase. I was only able to make an initial production run because I’d had the foresight to stockpile parts six months earlier. The global semiconductor shortage was wreaking havoc, and for more than two years these parts remained unavailable at any price from the chip manufacturer or distributors. But in the past few months the chips have finally become available again, and while they’re not priced cheaply, at least they’re obtainable.

Yellowstone is a universal disk controller card for Apple II computers. It supports nearly every type of Apple disk drive ever made, including standard 3.5 inch drives, 5.25 inch drives, smart drives like the Unidisk 3.5 and the BMOW Floppy Emu’s smartport hard disk, and even Macintosh 3.5 inch drives. Yellowstone combines the power of an Apple 3.5 Disk Controller Card, a standard 5.25 inch (Disk II) controller card, the Apple Liron controller, and more, all in a single card.

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