From: Frank Mori Hess Date: Sat, 2 Aug 2003 03:58:21 +0000 (+0000) Subject: added missing X-Git-Tag: r0_7_21~24 X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=a20a51506cf3ba2bde10cf51b30bdb4ca8ae458a;p=comedilib.git added missing --- diff --git a/doc/intro.sgml b/doc/intro.sgml index 3d87582..da7d64e 100644 --- a/doc/intro.sgml +++ b/doc/intro.sgml @@ -197,6 +197,8 @@ device drivers faster and with better documentation. + + In the case of Linux as the host operating system, device driver writers must keep the following Linux-specific issues in mind: @@ -262,7 +264,7 @@ each device. Input/Output (PIO). Almost all devices can be interfaced in PIO mode: the processor is responsible for directly accessing the bus addresses allocated to -the device whenever it needs +the device whenever it needs to read or write data. Some devices also allow DMA: the device and the memory talk to each other directly, without needing the processor. DMA is a feature of the bus, not of the operating system (which, of @@ -293,7 +295,7 @@ memory allocation, registration of interrupt handlers, etc. - +