18 Facts About Conventional PCI

Devices connected to the Conventional PCI bus appear to a bus master to be connected directly to its own bus and are assigned addresses in the processor's address space.

Typical Conventional PCI cards used in PCs include: network cards, sound cards, modems, extra ports such as Universal Serial Bus or serial, TV tuner cards and hard disk drive host adapters.

The first Conventional PCI specification was developed by Intel, but subsequent development of the standard became the responsibility of the Conventional PCI Special Interest Group .

PCI and PCI-X sometimes are referred to as either Parallel PCI or Conventional PCI to distinguish them technologically from their more recent successor PCI Express, which adopted a serial, lane-based architecture.

Conventional PCI was immediately put to use in servers, replacing Micro Channel architecture and Extended Industry Standard Architecture as the server expansion bus of choice.

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In mainstream PCs, Conventional PCI was slower to replace VLB, and did not gain significant market penetration until late 1994 in second-generation Pentium PCs.

Outside the server market, the 64-bit version of plain Conventional PCI remained rare in practice though, although it was used for example by all G3 and G4 Power Macintosh computers.

The Conventional PCI bus includes four interrupt pins, later allow up to 8 Conventional PCI devices share the same interrupt line in APIC systems, all of which are available to each device.

Later revisions of the Conventional PCI specification add support for message-signaled interrupts.

Conventional PCI Express does not have physical interrupt lines at all.

Typical Conventional PCI cards have either one or two key notches, depending on their signaling voltage.

Conventional PCI connector is defined as having 62 contacts on each side of the edge connector, but two or four of them are replaced by key notches, so a card has 60 or 58 contacts on each side.

The standard size for Mini Conventional PCI cards is approximately a quarter of their full-sized counterparts.

Many Mini Conventional PCI devices were developed such as Wi-Fi, Fast Ethernet, Bluetooth, modems, sound cards, cryptographic accelerators, SCSI, IDE–ATA, SATA controllers and combination cards.

Mini Conventional PCI has been superseded by the much narrower Conventional PCI Express Mini Card.

Each Conventional PCI slot gets its own configuration space address range.

Conventional PCI bus requires that every time the device driving a Conventional PCI bus signal changes, one turnaround cycle must elapse between the time the one device stops driving the signal and the other device starts.

Conventional PCI bus detects parity errors, but does not attempt to correct them by retrying operations; it is purely a failure indication.