參數(shù)資料
型號: HIF_SPEC
英文描述: EZ-030 Demonstration Board Theory of Operation Host Interface (HIF) Specification
中文描述: 易- 030演示板的經(jīng)營理論主機接口(誘導(dǎo)因子)規(guī)格
文件頁數(shù): 33/118頁
文件大?。?/td> 356K
代理商: HIF_SPEC
Host Interface (HIF) Specification
3–9
Register Usage
Type
Regs
Contents
Description
Calling:
gr121
17 (0x17)
Service number
lr2
pathname
A pointer to a filename
lr3
mode
See parameter descriptions below
lr4
pflag
See parameter descriptions below
Returns:
gr96
fileno
Success:
Failure: < 0
Logical TRUE, service successful
Error number, service not successful
(implementation dependent)
0 (file descriptor)
gr121
0x80000000
errcode
Parameter Descriptions
Pathname
is a pointer to a zero-terminated string that contains the full path and
name of the file being opened. Individual operating systems have different
means to specify this information. With hierarchical file systems, individual
directory levels are separated with special characters that cannot be part of a
valid filename or directory name. In UNIX-compatible file systems, directory
names are separated by forward slash characters, /, (e.g.,
/
usr
/
jack
/
files
/
myfile
); where
usr
,
jack
, and
files
are succeedingly lower
directory levels, beginning at the root directory of the file system. The name
myfile
is the filename to be opened at the specified level. The individual
characteristics of files and pathnames are determined by the specifications of a
particular operating system implementation.
The
mode
parameter is composed of a set of flags whose mnemonics and
associated values are listed in Table 3–4.
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