A51 – Assembler Kit The A51 Assembler Kit for the microcontroller family enables you to write assembler programs for practically any derivatives. This Assembler User’s Guide provides an overview of the Keil A51 and AX51 Assemblers. It contains the following chapters. Introduction provides a brief. The CA51 Compiler Kit for the microcontroller family supports all derivatives including classic devices and IP cores from companies like Analog.
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When your C program calls a function located in a different bank, it switches the bank, jumps to the desired function, restores the previous bank when the function completesand returns execution to the calling routine.
Since the does not directly support more than 64 Kbytes of code address space, there must be external hardware that swaps code banks. These directives are useful when using indirectly called functions or when disabling overlaying for debugging. Macro Processor discusses how to use the macro expansion capabilities of the assembler.
The hardware that does this must be controlled by software running on the By carefully grouping functions in the different banks, you can create very large, efficient applications. Conditional assembly of sections of code can help you achieve the most compact code possible.
BL51 produces a MAP file extension. The position of each error is clearly marked.
It translates symbolic assembly language mnemonics into relocatable object code where the utmost speed, small code size, and hardware control are critical.
Revision History May You can dramatically improve system performance by grouping interdependent functions in the same bank. It allows you to define and use macros in your assembly programs. Enter keywords to find the product you are looking for in adsembler Quick Find field above or use Advanced Search.
By default, the following code sections are automatically located in the common area:.
These object modules must adhere to the OMF51 object module specification. The common area in a bank switching program is an area of memory that can be 3 accessed at all times from all banks. In addition to object files, the A51 assembler generates list files which may optionally include symbol table and cross reference information.
Error Messages lists all error and warning messages that are generated by the assembler. The A51 assembler supports symbolic access to all features of the architecture. The Appendix provides numerous details about the assembler including instruction set, limitations, reserved words, and predefined symbols.
This product was added to our catalog on Tuesday 18 February, It is an endless. Listing File Following is an example listing file generated by the assembler. Initial revision in CHM format.
The Standard Macro Processor is the easier macro processor to use. The register banks used, and the total number of warnings and errors are at the end of the listing file. Information about assembler invocation and the object file generated is printed.
aassembler This allows exact display of program. The A51 Assembler supports two different macro processors:. The overlay-map displays the structure of the program and the location of the bit and data segments of each function.
The editor and debugger are integrated into a single application and provide a seamless embedded project development environment.
However, it is easy for you to specify custom settings for your application. The linker resolves external and public references a5 assigns absolute or fixed addresses to relocatable program segments.