参数资料
型号: HIF_SPEC
英文描述: EZ-030 Demonstration Board Theory of Operation Host Interface (HIF) Specification
中文描述: 易- 030演示板的经营理论主机接口(诱导因子)规格
文件页数: 10/118页
文件大小: 356K
代理商: HIF_SPEC
Documentation Conventions
This specification assumes some familiarity with the UNIX operating system
and the C language. In this specification, the conventions presented in the
sections below are assumed.
Numeric Values
All numeric values are presumed to be expressed in decimal notation unless
otherwise stated. Hexadecimal values are prefaced by the characters
0x
. Any
value not prefaced by
0x
is defined to be a decimal number. For example:
100092
0x100092
Decimal number
Hexadecimal number
The first number above is a decimal value by implication, because it has not
been prefaced by
0x
. The second constant includes the explicit
0x
prefix,
designating it as a hexadecimal value.
Character Strings
In the documentation, frequent mention is made of character strings that hold
filenames, pathnames, and environment variable names. In all cases, the HIF
Specification requires that strings be constructed as a sequence of ASCII
characters terminated by a NULL byte (an 8-bit character composed of all zero
bits). This is the form in which strings are represented in the C language. Thus,
the space reserved for a string must be one byte longer than the length of the
string, to accommodate the NULL byte.
Languages such as Pascal, which require counted strings (that is, a single 8-bit
byte in the first character of the string that specifies the number of bytes that
follow), are required to convert these to NULL-terminated form before calling
the HIF kernel services. In addition, languages other than C may need to
convert strings passed back from the HIF kernel services to a compatible
internal form. All returned strings are in NULL-terminated form.
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