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Introduction to the Small Computer Concept
The FrontEnd Processor Application
Summary of Application Needs
31 other sections not shown
address space addressing modes application software application tasks architecture binary synchronous communications buffer byte class interrupt command condition code control character Control Program Support cycle steal data area Data bus data item data transfer device address device control block diagnostic direct program control disk diskette Doubleword error detection error recovery example execution external sync flag floating-point frame functions hardware and software IBM Series/1 immediate device control initial program load input/output input/output channel input/output operation instruction set integrated interrupt response level status block level status register logical main storage modules multiple occurs operand operating system partition perform permits PL/I priority level processing protocol provides Realtime Programming System reset SDLC segmentation registers sequence Series/1 processor shown in Figure signal small computer applications software support stack storage address storage protection subroutine summary mask switch task set terminal application timer tion transmitted user's zero