[mhh__]

I'm 17 and also _started_ writing a (Asm) forth interpreter, so well done for finishing it.

The code looks readable and pretty clean. Very cool.

If you want to continue down the Z80 route, and have too much time on your hands, I recommend designing a simple IR and building a little compiler/code generator for the Z80 (twas fun for me).

[faissaloo]

What instruction set are you building this for?

[mhh__]

amd64/x86_64(Whatever): I was only really writing it on the bus as a distraction so I was relatively tempted to write it for MMIX (a la Knuth)