双口无线modem Linux设备文件/dev/*详解、查询(5)

#modules=(e1000e iwl4965 snd-mixer-oss snd-pcm-oss snd-hwdep snd-page-alloc snd-pcm snd-timer snd snd-hda-intel soundcore)。

rtc-core rtc-lib nvidia output snd-mixer-oss snd-pcm-oss snd-hwdep snd。

1 = /dev/sequencer OSS音序器(CONFIG_SND_SEQUENCER_OSS)

3 = /dev/dsp OSS数字音频波形输出设备(CONFIG_SND_PCM_OSS)

8 = /dev/sequencer2 第二OSS音序器(CONFIG_SND_SEQUENCER_OSS)

16 = /dev/mixer1 第二OSS混音控制器(CONFIG_SND_MIXER_OSS)

19 = /dev/dsp1 第二OSS数字音频波形输出设备(CONFIG_SND_PCM_OSS)

21 char 通用 SCSI 设备(通常是SCSI光驱)

0 = /dev/sg0 第1个通用 SCSI 设备

1 = /dev/sg1 第2个通用 SCSI 设备

...

[说明]许多发行版还将这些设备命名为 /dev/sga, /dev/sgb, /dev/sgc ...

29 char 通用帧缓冲(frame buffer)设备

0 = /dev/fb0 第1个帧缓冲设备

1 = /dev/fb1 第2个帧缓冲设备

...

31 = /dev/fb31 第32个帧缓冲设备

43 block 网络块设备(Network block devices)

0 = /dev/nb0 第1个网络块设备

1 = /dev/nb1 第2个网络块设备

...

44 block 闪存转换层(Flash Translation Layer)文件系统

0 = /dev/ftla 第1个MTD(Memory Technology Device)上的FTL

* fix crash at launch if device memory is low.。

4 2.4 ghz or amd 3000* memory: 1 gb* sound system: 16-bit sound device compatible with directx ®。

cpu does not read from or write to memory one byte at a time. instead, cpu accesses memory in 2, 4, 8, 16, or 32 byte chunks at a time. the reason for doing this is the performance - accessing an address on 4-byte or 16-byte boundary is a lot faster than accessing an address on 1-byte boundary.。

dev.copy(device,. . . ,which=k) dev.print(device,. . . ,which=k)。

* fix crash at launch if device memory is low.。

否则的话，使用/dev/fd0h2880 (2,32)或/dev/ps0。

in the particular example of this paragraph, it will take two memory accesses to get the 32-bit value from 2 to 5, rather than the one memory access it would take to get the 32-bit value from an aligned address。

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