Zeditty

A Zilog Z80 interpreter library for C programs.

Usage

See the /test folder for an example. The hello.c file is a simple program that asks the user for their name and then outputs Hello, [name]! The Makefile in the /test folder will build this with the Small Device C Compiler and also compile a program called interpret using the zeditty library. If you run the interpret program, it will execute the hello.z80 program.

If you open the interpret.c file, you can see how simple it is to begin interpreting Z80 code. You just have to load the file and run it, while also defining port callbacks. Interrupt callbacks are also supported. In order to get sdcc to compile a program properly, you have to define a crt0.s file. In this case, I built a simple file that calls the _main function and then writes to port 1. The interpret.c file interpets a write to port 1 as equivalent to exit(). It interpets a write to port 0 as putchar() and a read from port 0 as getchar(). These are also defined in the crt0.s file as well using the new SDCC calling convention (meaning, the crt0.s will need to be changed if you are using an old version of sdcc).