386 Breadboard PC #6 386 CPU 4 Byte Test Software

The sixth in a new a series of videos to create a retro Intel 80386 (i386) PC on solderless breadboards and learn about how computer hardware and software works. In this video the 386 self test mode is enabled and the Intel provided 4 byte test program is enhanced to provide better test coverage. 386 Breadboard PC Playlist https://www.youtube.com/playlist?list=PL0HI91x0gPoGCINU_xEbs1fEjoHymO5l0 Intel386 DX MICROPROCESSOR 32-BIT CHMOS Datasheet http://bg-electronics.de/datenblaetter/Schaltkreise/A80386DX-20.pdf Full 386 tests in EEPROM https://github.com/barotto/test386.asm 80386 Hardware Reference Manual (1986) https://www.dosdays.co.uk/media/intel/1986_80386_Hardware_Reference_Manual.pdf COMPAQ DeskPro Technical Ref. Guide Vol 1 DeskPro 386/16 Sept 1986 https://archive.org/details/compaq-desk-pro-386-technical-reference-guide-vol-1-1986-09 Internal COMPAQ design documents https://archive.org/details/compaq-deskpro-386-16-technical-spec-1986-scan-2-of-2-photomode Wikipedia GPF https://en.wikipedia.org/wiki/General_protection_fault Breadboarding Labs Channel https://www.youtube.com/@breadboardinglabs Project Github https://github.com/breadboardinglabs Playlists for previous projects Breadboard PC https://www.youtube.com/playlist?list=PL0HI91x0gPoGUtu3rUd1dSInTlIL2wk2p Breadboard PC Version 2 https://www.youtube.com/playlist?list=PL0HI91x0gPoE9sSNmIbq5fcDDc7ziQe3c How to use Breadboards and Retro Digital Electronics https://www.youtube.com/playlist?list=PL0HI91x0gPoEelS1PPLXHtKFtiVTC3pGF (Buffers video #13) https://upload.wikimedia.org/wikipedia/commons/2/23/PDP-8I-backplane.jpg Chapters 0:00 Introduction 0:37 Improving the Intel 4 byte test 6:34 Checking Processor ID 11:48 Processor anomalies/bugs 16:25 386 Internal test 23:01 Better 4 byte test 28:08 Decoding byte enable to A1 & A0 36:58 Full 386 EEPROM test 37:42 386 Project High Level Plan 38:35 Summary and Next Video