IBM 8687 Installation Guide - Page 83
Active PCI Manager, CEC 1
UPC - 087944724261
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CEC 1 CPUs L4 Cache Processor/cache controller Memory controller Memory DIMMs 2 GBps RXE Expansion Port A (1 GBps) PCI bridge 2 GBps 66 MHz PCI bridge 66 MHz 33 MHz A-66 B-100 C-133 D-133 Ultra160 SCSI Gigabit Ethernet Video USB Kbd/Ms RSA 12 34 56 64-bit 64-bit 64-bit 66 MHz 100 MHz 133 MHz Figure 3-2 x440 block diagram showing the internal PCI-X slots These slots can accept adapters rated at speeds ranging from 33 MHz to 133 MHz. When deciding which adapters to put in which slots, we recommend you use the Active PCI Manager wizard to help you determine the best slots to use. See 5.1, "Active PCI Manager" on page 130 for details. You should also consider the following: Each adapter has a maximum rated speed and each bus also has a maximum rated speed. Installed adapters in a single bus will operate at the slowest of three speeds: - The rated speed of adapter 1 - The rated speed of adapter 2 (if the bus the adapter is installed in has two slots) - The rated speed of the bus Bus B supports one adapter at up to 133 MHz or two adapters at up to 100 MHz. 32-bit adapters can be installed in any of the slots and will run in 32-bit mode. 32-bit and 64-bit adapters can coexist in 64-bit slots in the same bus. The 32-bit adapters will run in 32-bit mode, and the 64-bit adapters will run in 64-bit mode. Chapter 3. Planning 69