Honeywell 400 Series Hardware Manual page 11

USE WITH THE SERIES 600/6000
With GIOS efficiently assuming the burden of responsibility for directing peripheral
operations, the programmer is relieved of much detailed programming.
Programming
information on the use of the subsystem with the Series 600/6000 is contained in Series
6000/600 General File and Record Control stem, BN85, and Series 60007300
Em? Macro Esemfijl firogram, ENE. . .