Restoring YC's Xerox Alto day 7: experiments with disk and Ethernet emulators

In this Alto restoration session we controlled the Alto's disk drive with an FPGA disk emulator, and attempted booting the Alto with a BeagleBone-based Ethernet emulator. The GIF below shows the drive performing seeks as commanded by the emulator. (With the cover off the Diablo drive, you can see the…
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