Input/Output and Exception Handling on the WC34020
The WC34020 is a
hypothetical machine with the same basic instruction set as the
WC34000
but a more realistic input/output mechanism. While the
WC34000 was designed to support projects in courses in computer
organization and compiler construction, the WC34020 is intended for
use in an operating systems course. This document describes the
features that distinguish the WC34020 from the WC34000. In
particular, it discusses the machine's I/O mechanism and facilities
for handling both interrupts and traps.