3 ms·
Even better than that was an Z280 which did have a proper user/supervisor mode and simple MMU. Really reminiscent of a PDP-11 in terms of supervisor state, jus
by monocasa 2y ago
Even better than that was an Z280 which did have a proper user/supervisor mode and simple MMU. Really reminiscent of a PDP-11 in terms of supervisor state, just strapped to a z80 instruction set otherwise. Also added a nice SP relative load to the instruction set.