/joh'liks/ n.,adj. 386BSD

Porting Unix to the 386: A Practical Approach



William & Lynne Jolitz


Started open source UNIX.

Appeared in part as a 17 article magazine series in 1991-1992.

Documented the "how, what, why, who, when" of porting BSD to the 386.

Done while BSD was becoming "open source".





Porting Unix to the 386: A Practical Approach - purpose of gate A20

purpose of gate A20:

GATE A20

Dealing with PC reverse compatibility requires defeating logic like Gate A20, which forces address rollover to a single megabyte for ancient 8086/8088 compatibility.





Copyright 2006 TeleMuse Partners, William Jolitz and Lynne Jolitz