Atari 65XE RAM Expansion Re-Revisited

I'm trying to figure out why the 320k RAM expansion in my Atari 65XE doesn't work (again). // Kindly sponsored by my favorite PCB manufacturer PCBWay! https://www.pcbway.com/ My previous videos about this RAM expansion: Installation: https://youtu.be/GtpmzixF97c Troubleshooting: https://youtu.be/twrAGSr2XkI Forum post with instructions and files for the 320k mod: https://www.exxoshost.co.uk/forum/viewtopic.php?t=160#p707 Extended RAM test: https://atari.fox-1.nl/atari-400-800-xl-xe/400-800-xl-xe-tools/extended-ram-test-0-21-0/ TIME STAMPS: 0:00 Introduction 3:43 Sponsor Message 4:23 Scoping the Port Bits 9:20 Replacing the PIA 14:53 Test Run 19:06 Thank you & Good night ----------------------------------------­------ MUSIC by FOCUS 10 https://focus10music.bandcamp.com EQUIPMENT AND TOOLS I USE: https://kit.co/janbeta * MERCHANDISE: https://janbeta.creator-spring.com MASTODON: https://chaos.social/@janbeta PATREON: https://patreon.com/janbeta KO-FI: https://ko-fi.com/janbeta WEBS