IBM 5150 Restoration Part 04 - 8088 CPU Hijinks

Merry #DOScember! In the final #DOScember 2025 installment of the IBM 5150 restoration series, I take a deeper dive into using an oscilloscope to probe around the motherboard looking for which chip(s) are keeping my PC from booting with a little help from some friends. Videos In This series Part 0 - Welcome home, IBM 5150 PC    • IBM 5150 Unboxing and Review   Part 01 - Testing the Power Supply    • IBM 5150 Restoration Part 01 - PSU   Part 02 - The Motherboard    • IBM 5150 Restoration Part 02 - Motherboard   Part 02 - Power On Follow Up    • IBM 5150 Restoration Part 02 Follow Up - P...   Part 03 - Clock Signal Test    • IBM 5150 Restoration Part 03 - Clock Signa...   Part 04 - This Part ------------------------- Website: http://blog.smartphonefanatics.com Instagram:   / alangrassia   Mastodon: https://noc.social/@AlanGrassia Bluesky: https://bsky.app/profile/alangrassia.... LinkedIn:   / alangrassia   ------------------------- Into Music: Moonz Author / Artist: tubebackr Website:   / tubebackr   Licensing info: https://tubebackrmusic.wixsite.com/tu... Christmas Music: Lofi Xmas Sludge - Deck The Halls Author / Artist: John Bartmann https://johnbartmann.com Licensing info: https://johnbartmann.bandcamp.com/alb...