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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Notify me of updates to A1 Keil. The bank switching process requires approximately 50 CPU cycles and consumes an additional 2 bytes of stack space.

A51 Assembler Kit

It translates symbolic assembler language mnemonics into executable machine code. The overlay-map displays the structure of the program and the location of the bit and data segments of each function.

The common area contains program sections and constants that must be available at all times. The editor and debugger are integrated into a single application and provide a seamless embedded project development environment. Map File Following is an example listing file generated by BL You can dramatically improve system performance by grouping interdependent functions in the same bank.

D. Assembler Differences

Products Download Events Support Videos. The A51 assembler translates assembler source files into a relocatable object modules.

This site uses cookies to store information on your computer. The linker resolves external and public references and assigns absolute or fixed addresses to relocatable program segments. The hardware that does this must be controlled by software running on the Error Messages lists all error and warning messages that are generated by the assembler. Since the does not directly support more than 64 Kbytes of code address space, there must be external hardware that swaps code banks.


This greatly reduces the overall memory requirement of most applications. The common area in a bank switching program is an area of memory that can be 3 accessed at all times from all banks. The memory map 3 contains the usage of the physical memory.

It may also contain frequently used code. Customers who purchased this product also bought:.

A51 Macro Assembler

Getting Started and Creating Applications The Appendix provides numerous details asembler the assembler including instruction set, limitations, reserved words, and predefined symbols. This site uses cookies to store information on your computer. It contains the following chapters. It is an endless. The Standard Macro Processor is the easier macro processor to use. Please review our Privacy Policy to learn more about our collection, use and transfers of your data.

These object modules must adhere to the OMF51 object module specification. The A51 assembler supports symbolic access to all features of the architecture. Writing Aassembler Programs describes the components of an assembly program and some aspects of writing assembly programs. The register banks used, and the total number of warnings and errors are at the end of the listing file.


In addition to object files, the A51 assembler generates list files which optionally may include symbol table and cross reference information. The A51 Assembler is a macro assembler for the family of microcontrollers. It generates assember listing file optionally with symbol table and cross reference. Important information This site uses cookies to store information on your computer. The common area cannot be physically.

A51 Macro Assembler

All the above components also are included as part of the Compiler and Assembler package, as well as the Professional Developer’s Kit package. The macro facility speeds development and conserves maintenance time since common sequences need only be developed once.

Control Statements permit aswembler to define symbol values, reserve and initialize storage, and control the placement of your code. Functions that are frequently invoked from multiple banks should be located in the common area.

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