80386 System Software Writers Guide. It includes a chapter on Unix implementation. Programming the 80386 Crawford John H.
It includes a chapter on Unix implementation. The 80386 sets TS each time it performs a task switch whether triggered by software or by hardware interrupt. 80386 System Software Writers Guide This edition was published in January 1987 by Intel Corporation CA.
System BIOS for IBM PCXTAT computers and compatibles.
This explains the 386 features for operating system writers. 231499-001 80386 System Software Writers Guide 1987. A lot of the 80386 architecture seems to have been designed with Multics in mind. It includes a chapter on Unix.