Followup: IBM 5170 “extreme“ overclocking (w/ associated BIOS patch)

Turns out the IBM 5170 Type-3 BIOS has code in it to prevent overclocking! I already showed you could run the 6mhz Type-1 board at 8mhz in a previous video -- but how far can I actually push it? I also show exactly what was wrong with my XT-IDE card to prevent it from working. -- Video Links IBM 5170 BIOS Patching: