Compilation of programs written in C is carried out in three stages.
The binary files obtained as a result of compilation must be provided with a header describing some process parameters. This header is generated using a tool called CPUObserver. The generated object file containing the process header and binary machine code can be loaded into the target platform, written to SPI Flash, launched for execution in real time, or launched in debug mode.
CPUObserver is the main tool used for:
CPUObserver is a Widows-based application.
FTDI's USB <-> UART solution is used to connect to the target platform. The data transfer rate is 921600 bps.
Minimum system configuration for getting started: FPGA such as EP2AGX125, SPI Flash and FTDI USB <-> UART converter.
CPUObserver communicates with KERNEL, which is executed on the target platform via a command interface. All KERNEL commands are transmitted in text form and can be entered manually. Data can be transmitted both in text form and in binary form.
CPUObserver supports both single-core and multi-core target platforms. Allows you to assign processes to run for each core of the system.
In the multicore system, the root kernel receives commands directly through the debug UART port. All other cores exchange information with the CPUObserver in transit through the root core. For the transit of commands and data between the root core and other cores, hardware streams are used.
Windows-based application, which is used as the main tool for generating binary code from source assembly text. CAssm is used to generate binary code not only for processor software, but also for generating microcode binary files for firmware context controllers and messenger.
The main property of CAssm is its customizability to the desired system of instructions or microinstructions.
The configuration of the instruction set, instruction format, instruction opcodes, instruction field codes and the corresponding mnemonics are described by a special structure in the source files.
Kernel is a system software that resides in a memory buffer inside an FPGA chip, and is placed there when compiling an FPGA project. The main functions of Kernel are as follows.
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