3 ms·The C128 from 1985 had a Z80 built into it. Where did those come from I wonder?by sys_64738 6y agoThe C128 from 1985 had a Z80 built into it. Where did those come from I wonder?nickt 6y agoGreat point. I just had a look in my C128 and they are just regular branded Zilog Z80s. I sure there's a story there too...timbit42 6y agoBil Herd claims he took the Z80 used in the prototype C128 from one of the ZX81 doorstops.