(3) Comparisons of the three

Full page — three controllers: AGC, HP2116, our P82 . . . [index].

Apollo AGC

HP 2116

P82

Design of all three is optimized towards control of equipment through an input/output (I/O) section with prioritized interrupt capabilities and dedicated instructions for a real-time operating environment. The HP2116 however, was a general purpose computer and so quickly developed into other areas.


Logic cage


Back-plane


Display and Keyboard


Instruction set / cycle time

41 / 11.7µs

68 / 1.6µs

50 / 60µs


Memory

Core RAM: 2k x 16 bits

Core “rope” ROM: 36k x 16 bits

Core RAM: 4k/8k x 17 bits

No ROM

SRAM: 2k x 8 bits

No ROM


Project timeline (concept – design – intro – exit)

1963 – 1963 – 1969 -1975

1963 – 1964 – 1968 – 1971

1981 – 1982 – 1983 – 1987