FOSS gamedev and creative worlds

as the growth/reduction mod is impossible to implement for now,
i want to focus on my next mod, a z80 cp/m 2.2 computer for minetet.

the major component of the task is already donein a third party tool called libz80

http://libz80.sourceforge.net

but i now have a prolem:

how to make a console for it ?

maybe we could have a xterm-like formpec object, capable of getting the keyboard focus and outputting text to the screen...