Processors
S/34s had two processors, the Control Storage Processor (CSP), and the Main Storage Processor (MSP). The MSP was the workhorse, based on System/3 architecture; it performed the instructions in the computer programs. The CSP was the governor, a different processor with different semi-RISC instruction set, based on System/32 architecture; it performed system functions in the background. Special utility programs were able to make direct calls to the CSP to perform certain functions; these are usually system programs like $CNFIG which was used to configure the computer system. These two processors worked in tandem.
Clock speed of the CPUs inside a System/34 was fixed at 1 MHz for the MSP and 4 MHz for the CSP. In today's PC-based world, the S/34 was the computational equivalent of a 16 to 20 MHz intel 80386 microprocessor.
Read more about this topic: IBM System/34
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