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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Assembling Programs specifies how to run the assembler and generate object files. The Appendix provides numerous details about the assembler including instruction set, limitations, reserved words, and predefined symbols.
The code in the common area is either duplicated in assmbler bank if the entire program area is swapped or can be located in a separate area or EPROM if the common area is not swapped.
It is an endless. The common area cannot be physically. You can dramatically improve system performance by grouping interdependent functions in the same bank. These object modules must adhere to the OMF51 object module specification. Initial revision in CHM format. This process is known as bank switching.
D. Assembler Differences
Control Statements permit you to define symbol values, reserve and initialize storage, and control the placement of your code. BL51 displays the invocation line and the memory model. It contains the following chapters. It allows you to define and use macros in your assembly programs. The macro facility speeds development and conserves maintenance time since common sequences need only be developed once. Each input module and the library modules included in the application are listed.
MPL has several predefined macro processor functions that perform many useful operations like string manipulation or number processing. The A51 Assembler supports two different macro processors:. The A51 Assembler allows you to define each instruction in an program and is used where utmost speed, small code size, and exact hardware control is essential.
The macro facility speeds development and conserves maintenance time since common sequences need only be developed once. Functions that are frequently aa51 from multiple banks should be located in the common area. The common area contains program sections and constants that must be available at all times. Conditional assembly of sections of code can help you achieve the most compact code possible.
Warning messages and error messages are listed at assemlber end of the MAP file. 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.
A D. Assembler Differences
It translates symbolic assembly language mnemonics into relocatable object code where the utmost speed, small code size, a1 hardware control are critical.
Macro Processor discusses how to use the macro expansion capabilities of the assembler.
The A51 Assembler is a macro assembler for the microcontroller family. Software support for the external bank switching hardware includes a short assembly file you can edit for your specific hardware platform. Getting Started and Creating Applications These directives are useful when using indirectly called functions or when disabling overlaying for debugging.
A51 Macro Assembler
The bank switching process requires approximately 50 CPU cycles and consumes an additional 2 bytes of stack space. The linker resolves external and public references and assigns absolute addresses to relocatable programs segments. Tell someone you know about this product. The standard macro syntax is compatible with that used in many other assemblers.
The linker resolves external and public references and assigns absolute or fixed addresses to relocatable program segments. This chapter discusses the directives that are available.
The A51 Assembler is a macro assembler for the family of microcontrollers. The register banks used, and the total number of warnings and errors are at the end of the listing file. The overlay-map displays the structure of the program and the location of the bit and data segments of each function.
In addition to object files, the A51 assembler generates list files which optionally may include symbol table and cross reference information.