My friend TheFatman discovers a bug in the Commodore 64 assembler Turbo Macro Pro, and we trace it back to the original 1985 Turbo Assembler. Disassembly commences, and we get to the cause of the bug, and patch it away. Become a patron: https://patreon.com/8BitShowAndTell One-time donation: https://paypal.me/8BitShowAndTell Download the patched Turbo Macro Pro: http://psw.ca/prg/TMPfix.d64 Download The Misadventures of TheFatman 2 demo: https://csdb.dk/release/?id=3136 Index: 0:00 Intro - TFM and the STA 1272 bug in TMP 1:55 A little Turbo Assembler history 4:00 Thanks to David - CDTV Controller 4:32 Disassembling the Assembler 9:42 There's the bug! 11:21 Explaining the bug 15:05 Patching a fix 21:14 Testing the fix 22:51 Thanks to my patrons