The architecture specification is at version 1.1.
The simulator implements architecture specification 1.1.
The PARM File Format is currently at revision 6.
The FETA memory image format is currently at revision 1.
pARMesan is a 16-bit CPU architecture based on AArch64 but with some x86 inspiration. It's meant to be an academic project to get some experience with the nuances of designing an architecture. A pARMesan CPU has 8 general-purpose 16-bit registers and a 16-bit instruction pointer. It can address 64KB of byte-addressable ram, and has support for memory-mapped IO. More detailed documentation can be found in the docs. This repo also contains a C implementation of the architecture.
A Rust implementation of this CPU is planned, and a little work has been done towards that project, found in it's Git repo: bytesize.
An assembler for this ISA is available, called cheesegrater. It is still in the early stages of development, and does not yet have good documentation. It is currently able to assemble some simple programs, which can be found in that repository.
First, build the project by running make all. This will generate the binary parmesan in the root directory. Now you can run the emulator on an executable via parmesan FILENAME. Run parmesan -h for a more complete list of commands.
Each test is a single directory containing the assembly file in SWISS format, a file containing the expected output, and the executable file (currently in PARM format). Optionally, a directory can also contain a FETA memory dump file which will also be incorporated into the test.
After running the test(s), output will be stored in a .out file in the output directory.