Abstract
Many peripheral devices can be connected to the i386/i486 machine. The communications between these devices and the i386/i486 are through I/O addresses. The I/O address can carry data, present the status of the peripheral devices, or control the peripheral devices. This chapter discusses the I/O addresses (I/O port address and memory I/O address) and the I/O port protection mechanism (I/O privilege level protection and I/O permission bit map protection) provided by the i386/i486 processor.
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© 1993 Van Nostrand Reinhold
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Ro, SC., Her, SC., Singh, R. (1993). Input/Output. In: Singh, R. (eds) i386/i486 Advanced Programming. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-6551-8_9
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DOI: https://doi.org/10.1007/978-1-4684-6551-8_9
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4684-6553-2
Online ISBN: 978-1-4684-6551-8
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