American Megatrends Atlas PCI EISA User Manual page 19

PCI,
Continued
PCI Diagram
A typical PCI motherboard system block diagram follows.
Buffered Reads and Writes
The PCI Controller buffers reads and writes between the memory and the CPU and between PCI peripheral
devices.
PCI Component Classes
PCI components must be one of three classes: bus master, slave, or master/slave combination.
Bus Mastering
PCI devices can be bus masters, slaves, or a combination of bus master and slave.
Atlas PCI Pentium EISA Motherboard User's Guide
13