PATH ADC Home > Documentation > Hardware > Device Managers and Drivers > PCI Card Services > Designing PCI Cards and Drivers for Power Macintosh Computers

  

---

Configuration Registers

Figure 4-1 presents a map of the PCI configuration registers that system firmware reads or writes to during the Open Firmware startup process. In Figure 4-1, read-only registers are shaded; all other registers are read/write. The next section describes the actions taken for each register.

Figure 4-1 PCI configuration register map