nostr:npub1n5dxwyhuf3cgn8wy0qrj082tumcvugk50y35am52vr6lhcgj9pjq2md7st DOS, Windows 3.1, Upgrading from 166mhz to 386 then 486SX, then upgrading the chip to a 'you-beaut' 486DX for that "extra power"... those were the days, lol...