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)： 63/118頁
文件大?。?/td> 356K
代理商： HIF_SPEC
Host Interface (HIF) Specification
3–39
Service 49 – time
Return Seconds Since 1970
Description
This service returns, in register
gr96
, the number of seconds elapsed since
midnight, January 1, 1970, as an integer 32-bit value. It is assumed that the
kernel service will have access to a counter whose contents can be preloaded
that measures time, with at least a 1-second resolution, for this purpose.
The time value returned by this service is Greenwich Mean Time (GMT). The
conversion to local time should be accomplished by a separate function that
uses the value returned by the
time
service and the time-zone information from
the
gettz
(Get time zone) service call to compute the correct local time.
Register Usage
Type
Regs
Contents
Description
Calling:
gr121
49 (0x31)
Service number
Success:
≠
0 (time in seconds)
Failure: = 0
Returns:
gr96
secs
gr121
0x80000000
errcode
Logical TRUE, service successful
Error number, service not successful
(implementation dependent)
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