>So, with very little knowledge of computer programming (they were low level guys) or bus technologies they banged out an ISA card and an application to throw b

>So, with very little knowledge of computer programming (they were low level guys) or bus technologies they banged out an ISA card and an application to throw bytes out onto the network. IBM's PC technical reference manual was so detailed that it was possible to design a card without ever having seen the actual hardware.