https://www.addohms.com/tags/apple-ii/ Recent content in Apple-Ii on AddOhms by Bald Engineer Hugo en-US Wed, 20 Mar 2024 14:10:25 +0000 https://www.addohms.com/measuring-apple-iis-intentional-glitch/ Wed, 20 Mar 2024 14:10:25 +0000 https://www.addohms.com/?p=499 The Apple II’s CPU clock has jitter or a glitch. This issue is not new—it has been present since its original design in 1977! Bald Engineer uses an oscilloscope to show how often the glitch occurs and how to correlate that jitter to its source—which is useful when you are not testing 40-year-old devices. The device under test (DUT) in this video is the Mega IIe project. It’s a fully compatible Apple IIe built around the Mega II chip.