GEC 4060

The 4060 replaced the 4070 as the entry level processor. It used 4 AMD 2900 bit-slice processors (4 bits wide each) as its main CPU, microprogrammed to run the 4080 instruction set. The 4060 also had its main I/O processor (called the IMC, Integral Multiplexor Channel) as part of the main CPU microprogram, although additional external I/O processors could be fitted if required. The 4060 supported 256kb of internal semi-conductor store.