*[https://wiki.osdev.org/Expanded_Main_Page OSDev Wiki] [https://www.seasip.info/Gem/ Intel GEM]
*[https://archive.org/details/The_Undocumented_PC_Second_Edition_Frankvan_Gilluwe/ The Undocumented PC] A Programmer’s Guide to I/O, CPUs, and Fixed Memory Areas
*[https://youtu.be/niKblgZupOc CGA Graphics - Not as bad as you thought] by [[The 8-Bit Guy]]
*[https://www.nand2tetris.org/ From Nand to Tetris] [https://github.com/jherskow/nand2tetris/blob/master/nand2tetris%20BOOK.pdf The elements of computing systems ebook]
*[https://youtu.be/kn06jcwRAs4 All 1980's] [https://youtu.be/mcIe6gSv5bM All 1990-1992] [https://youtu.be/2dXNTb2OsIo All 1993-1995] DOS games in one video