An interrupt based organization for management information systems
Communications of the ACM
DPL: A Language for Instruction in CONTEMPORARY DATA PROCESSING CONCEPTS
DPL: A Language for Instruction in CONTEMPORARY DATA PROCESSING CONCEPTS
Design and implementation of a diagnostic compiler for PL/I
Communications of the ACM
Synchronizing processors with memory-content-generated interrupts
Communications of the ACM
A proposal for certain process management and intercommunication primitives
ACM SIGOPS Operating Systems Review
An annotated bibliography on microprogramming: late 1969 -- early 1972
MICRO 5 Conference record of the 5th annual workshop on Microprogramming
A new technique for data monitoring
ACM SIGPLAN Notices
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This note is an extension of the ideas expressed by Morgan [1]. He suggests a new form of interrupt which he proposes to use to control the execution of a program, in his case a file management system called DPL [2]. Simply stated, he has attached to every subroutine a Boolean expression which, if true, would cause that subroutine to be executed. Since his implementation is via software, a relatively time-consuming check must be made whenever some condition in the program changes (e.g. some variable has a value changed). A rather simple hardware addition to existing machines can easily implement this interrupt. The following is such a proposal.