Series Playlist: https://www.youtube.com/playlist?list=PLLJ-Nv_tKpJlJfdkefnnU-I8gemd9TPjO

IBM's 5162 XT-286 machine was a bit of an oddball. Released in 1986, it was comparatively low specced for its time but of course still subject to the "IBM Tax" - making it notoriously bad value for money. What's worse is that IBM built in various measures to prevent users being able to upgrade it, so as to prevent cannibalisation of PS/2 sales.

So what were these limitations? How do we work around them? Just how fast can this thing go anyway? Find out in part 2 of my ongoing upgrade and restoration series!

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Relevant Links: IBM 5162 RAM Information: http://minuszerodegrees.net/5162/ram/5162_ram.htm Tantalum Capacitors: http://minuszerodegrees.net/failure/failure%20-%203lt.htm Overclocking the IBM 5162 / BIOS Information: https://www.retrocmp.de/ibm/5162/xt286.htm

Further Viewing: Part 1: https://youtu.be/zWkYrhrdogQ PC-SPRINT Overclock Tool For IBM 5150 XT: https://www.youtube.com/watch?v=8oWyogPZ7Bw

VIP Superfans: Action Retro: https://www.youtube.com/ActionRetro Arthur Ludwiczak D. 'Xalior' Rimron-Soutter: https://www.youtube.com/Xalior Gary Pinkett Has Beard, Plays Games: https://www.youtube.com/blcollier James Rodgers Karl Bate Kevin Leah Mark 'Kurbeco' Simpson Mr Lurch: https://www.youtube.com/mrlurchsthings Naoki Saito: https://www.youtube.com/NaokiSaito Ronnie Graham Troozers

Socials: Official ctrl-alt-rees Discord: https://discord.gg/5k922pd8PW Twitter: https://twitter.com/ctrl_alt_rees Instagram: https://www.instagram.com/ctrl.alt.rees

Chapters: 00:00 Intro 00:25 Teardown - What's Inside The IBM 5162 XT-286? 01:15 Motherboard Overview & Tour 02:14 BIOS Clock Speed Limitation - How & Why 02:59 Motherboard Overview Continued & CPU Clock Circuitry 04:04 Socketing & Replacing The Slow 82284 & 82288 04:34 Replacing The 3-Legged Tantalum Capacitors 05:28 Benchmark - Stock 5162 XT 286 & ATX PSU Upgrade Musings 06:01Adding An 80287 Math Co-Processor 06:38 Upgrading The IBM 5162 XT 286 To 12MHz CPU 07:23 8MHz Clock Speed & AMI BIOS Swap 08:43 10MHz Clock Speed & Some Potential Issues? 09:44 Upgrading The 150ns RAM To Something Much Faster 10:26 Musings On Slow RAM & Further Upgrades 10:43 Pushing The 5162 XT-286 To 12MHz? 11:13 Further Upgrades Coming In Part 3 - The Need For Speed!

#vintagecomputing #retrogaming #restoration