System software

General system BESM-6 software consisting of the operating system (OS) ''Dubna'' and monitoring programming system (MPS) is described. The OS ''Dubna'' posesses means for simultaneous solution in a multiprogram regime of up to 16 software programs with automatic dynamic redistribution of operative memory and machine time between them. There is a developed buffering of data input-output. The MPS comprises a monitor interpreting controlling punch cards and assuring their realization. The MPS consists of translators from algorithmic languages FORTRAN, ALGOL, Assembler from the autocode Madlen. A substantial part of the system is a loader performing the assembly from standard operating program masses and operative memory distribution. As OS CDC-6500 OC NOS/BE is applied. For M-6000, TRA, Electronika-100 and EC-1060 variants of CDC-6500 computer code-analogs variants are developed