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之前有找到过一下class code分类，收集起来以备用。

可能在写PCI scan的程序时候，能排的上用场吧。

另外提供一个PCI Device Scan程序的头文件 ，以供参考.

Class Code Table

Class Codes

Class Description
0x00 Devices built before class codes (i.e. pre PCI 2.0)
0x01 Mass storage controller
0x02 Network controller
0x03 Display controller
0x04 Multimedia device
0x05 Memory Controller
0x06 Bridge Device
0x07 Simple communications controllers
0x08 Base system peripherals
0x09 Inupt devices
0x0A Docking Stations
0x0B Processorts
0x0C Serial bus controllers
0x0D-0xFE Reserved
0xFF Misc

Class Code 0: Pre 2.0

Sub-Class Prog. I/F Description
0x00 0x00 All devices other than VGA
0x01 0x01 VGA device

Class Code 1: Mass Storage Controllers

Sub-Class Prog. I/F Description
0x00 0x00 SCSI Controller
0x01 0xXX IDE controller. The Prog I/F is defined as follows:
bits Desc
0 Operating mode (primary)
1 Programmable indicator (primary)
2 Operating mode (secondary)
3 Programmable indicator (secondary)
6..4 Reserved (zero)
7 Master IDE device
0x02 0x00 Floppy disk controller
0x03 0x00 IPI controller
0x04 0x00 RAID controller
0x80 0x00 Other mass storage controller

Class Code 2: Network Controllers

Sub-Class Prog. I/F Description
0x00 0x00 Ethernet controller
0x01 0x00 Token ring
0x02 0x00 FDDI controller
0x03 0x00 ATM controller
0x80 0x00 Other network conteroller

Class Code 3: Display Controllers

Sub-Class Prog. I/F Description
0x00 0x00 VGA compatable controller. Has mapping for 0xA0000..0xBFFFF and io addresses 0x3B0..0x3BB.
0x01 8514 compatable
0x01 0x00 XGA controller
0x80 0x80 Other display controller

Class Code 4: Multimedia Devices

Sub-Class Prog. I/F Description
0x00 0x00 Video device
0x01 0x00 Audio device
0x80 0x00 Other multimedia device

Class Code 5: Memory Controllers

Sub-Class Prog. I/F Description
0x00 0x00 RAM controller
0x01 0x00 Flash memory controller
0x80 0x00 Other memory controller

Class Code 6: Bridge Devices

Sub-Class Prog. I/F Description
0x00 0x00 Host/PCI bridge
0x01 0x00 PCI/ISA bridge
0x02 0x00 PCI/EISA bridge
0x03 0x00 PCI/Micro Channel bridge
0x04 0x00 PCI/PCI bridge
0x05 0x00 PCI/PCMCIA bridge
0x06 0x00 PCI/NuBus bridge
0x07 0x00 PCI/CardBus bridge
0x80 0x00 Other bridge type

Class Code 7: Simple Communications Controllers

Sub-Class Prog. I/F Description
0x00 0x00 Generic XT compatable serial controller
0x01 16450 compatable serial controller
0x02 16550 compatable serial controller
0x01 0x00 Parallel port
0x01 Bi-directional parallel port
0x02 ECP 1.X parallel port
0x80 0x00 Other commonications device

Class Code 8: Base System Peripherals

Sub-Class Prog. I/F Description
0x00 0x00 Generic 8259 programmable interrupt controller (PIC)
0x01 ISA PIC
0x02 EISA PIC
0x01 0x00 Generic 8237 DMA controller
0x01 ISA DMA controller
0x02 EISA DMA controller
0x02 0x00 Generic 8254 timer
0x01 ISA system timer
0x02 EISA system timer
0x03 0x00 Generic RTC controller
0x01 ISA RTC controller
0x80 0x00 Other system peripheral

Class Code 9: Input Devices

Sub-Class Prog. I/F Description
0x00 0x00 Keyboard controller
0x01 0x00 Digitizer (pen)
0x02 0x00 Mouse controller
0x80 0x00 Other input controller

Class Code A: Docking Stations

Sub-Class Prog. I/F Description
0x00 0x00 Generic docking station
0x80 0x00 Other type of docking station

Class Code B: Processors

Sub-Class Prog. I/F Description
0x00 0x00 386
0x01 0x00 486
0x02 0x00 Pentium
0x10 0x00 Alpha
0x20 0x00 PowerPC
0x40 0x00 Co-Processor

Class Code C: Serial Bus Controllers

Sub-Class Prog. I/F Description
0x00 0x00 Firewire (IEEE 1394)
0x01 0x00 ACCESS bus
0x02 0x00 SSA (Serial Storage Architecture)
0x03 0x00 USB (Universal Serial Bus)

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