From the readme:<p>> that uses the BIOS to load data from the boot disk<p>That's not a bootsector demo (it's larger than 512 bytes). From reading the source: It's a hybrid bootloader + demo, in a pragmatic manner.<p>Here's an eclectic selection of other nice, not widely known christmas themed demos I found earlier (merry christmas!):<p><a href="https://www.youtube.com/watch?v=6X74bhXltFo" rel="nofollow">https://www.youtube.com/watch?v=6X74bhXltFo</a> (BBC Micro)<p>> Bitshifters - Xmas 19 Demo<p>---<p><a href="https://www.youtube.com/watch?v=1t02TvLbQec" rel="nofollow">https://www.youtube.com/watch?v=1t02TvLbQec</a> (PC, CGA)<p>> Una simpatica demo natalizia datata 1986 per l'amato PC. Quante volte l'ho guardata quand'ero più giovincello:o)<p>---<p><a href="https://www.youtube.com/watch?v=hDitgPGh_MQ" rel="nofollow">https://www.youtube.com/watch?v=hDitgPGh_MQ</a> (Atari 8-bit)<p>> christmas collection demo for Atari 8-bit