你那个+1错误的写成了+l。
在上面的代码中，第29行引用了一个名为 clk 的对象，但是并没有声明这个对象。VHDL 编译器无法确定 clk 是一个信号还是一个变量，所以报出了错误。为了修复这个问题，应该在实体部分中声明 clk 对象，例如：这样，clk 对象就声明了，VHDL 编译器就可以识别这个对象了。
t没有定义。注意第一个process中虽然定义了一个t，但是它是局部变量，而在40行的需要再定义一次t。
An additional C type, OCIInd, is used to represent null indicator information corresponding to attributes of object types. See Also: For more information and examples regarding the use of the OTT, refer to Chapter 14, "The Object Type Translator (OTT)". ...
缺少元件addsub_ovcy的声明。你在addsub_ovcy_1 : addsub_ovcy...中例化了模板元件 addsub_ovcy，但是却没有在结构体开始的地方声明这个元件。
I'm VHDL beginner working on a Filter code, which is shown below and i'm getting the error as "error (10482): vhdl error at fir.vhd(17): object "std_logic_signed" is used but not declared" but i believe i included proper libraries , please help me sol...
The Java Object Mapper is a simple, light-weight framework used to map POJOs to the Aerospike database. Using simple annotations or a configuration YAML file to describe how to map the data to Aerospike, the project takes the tedium out of mapping the da
The terms object and instance are used interchangeably in this manual. See Also: For more information about objects, refer to the Oracle9i Application Developer's Guide - Object-Relational Features. Persistent Object A persistent object is an object which is stored in an Oracle database. It ...
To fix the Object require error in VBA, you need to ensure that the variable or object being used exists and has been properly declared and initialized before it is used in any operations. You can do this by checking for spelling errors, verifying the data type being used, and making sure...
· If an enterprise bean has unknown primary key, then a default primary key cmp-field must be used. Its name is “ejb_pk”. Therefore, it is not allowed other non-primary key cmp-fields to have the same name. The O/R mapping of this additional cmp-field must be described in ...