> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/man/man4/pccbb.4.md).

# pccbb.4

`pccbb` — CardBus 桥驱动

## 名称

`pccbb`

## 概要

`device cbb device pccard device cardbus device exca`

## 描述

`pccbb` 驱动实现了 CardBus 桥的 Yenta 规范。

支持以下 PCI cardbus 和 pcmcia 桥：

* Cirrus Logic PD6832
* Cirrus Logic PD6833
* Cirrus Logic PD6834
* O2micro OZ6812
* O2micro OZ6832
* O2micro OZ6833
* O2micro OZ6836
* O2micro OZ6860
* O2micro OZ6872
* O2micro OZ6912
* O2micro OZ6922
* O2micro OZ6933
* O2micro OZ6972
* O2Micro OZ711E1
* O2Micro OZ711M1
* Ricoh RL4C475
* Ricoh RL4C476
* Ricoh RL4C477
* Ricoh RL4C478
* TI PCI-1031
* TI PCI-1130
* TI PCI-1131
* TI PCI-1210
* TI PCI-1211
* TI PCI-1220
* TI PCI-1221
* TI PCI-1225
* TI PCI-1250
* TI PCI-1251
* TI PCI-1251B
* TI PCI-1260
* TI PCI-1260B
* TI PCI-1410
* TI PCI-1420
* TI PCI-1450
* TI PCI-1451
* TI PCI-1510
* TI PCI-1515
* TI PCI-1520
* TI PCI-1530
* TI PCI-1620
* TI PCI-4410
* TI PCI-4450
* TI PCI-4451
* TI PCI-4510
* TI PCI-4520
* TI PCI-\[67]x\[12]1
* TI PCI-\[67]x20
* ENE CB710
* ENE CB720
* ENE CB1211
* ENE CB1255
* ENE CB1410
* ENE CB1420
* Toshiba ToPIC95
* Toshiba ToPIC95B
* Toshiba ToPIC97
* Toshiba ToPIC100

## 加载器可调参数

驱动支持以下可调参数，可添加到 **/boot/loader.conf** 或通过 [sysctl(8)](/man/man8/sysctl.8.md) 命令设置：

**`hw.cbb.debug`** 非零值会导致打印更详细的信息，以帮助调试桥芯片组的问题。

## 参见

[cardbus(4)](/man/man4/cardbus.4.md), [exca(4)](/man/man4/exca.4.md)


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