Remote/local Ni  (kbd,serial,eth)
* p
* t
* g
* bp
* d[bwdq]
* u
* r [regs]
* w[bwd]
* r[bwd]

Ni ::= Native instruction set i
Ui ::= Unassemble instruction set i
Zi ::= Translated instruction set i, continuous instructions for table lookups, autogenerated
Emulator ::= inputs  outputs
Emulator.inputs ::= { Ni, Ui, Zi, kbd, serial, eth }
Emulator.outputs ::= { text/cga,serial,eth }