Operating Systems, BIOS

Digital Research

• Computer History Museum (CHM): EARLY DIGITAL RESEARCH CP/M SOURCE CODE

IBM

• Vernon Brooks: IBM PC/XT/AT/286 BIOS SOURCE CODE RECONSTRUCTION.

Microsoft

• Computer History Museum (CHM): MICROSOFT MS-DOS EARLY SOURCE CODE

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Floppy Disk Drives

Universal PC/MSDOS Floppy Disk Driver

• c't 1987/11 (& c't 1987/2): DRV36.TXT / DRV36.ASM / Download (with DRV36.SYS)

Format and Use 8 Inch Floppy Disks With a PC

• Github: climatex/8FORMAT

Network

8086 (8 bit) Driver for 3COM Etherlink III 3C509B Cards

• Github: hackerb9/3C509B-nestor