ORCODE.77 A COMPUTER ROUTINE TO CONTROL A NUCLEAR PHYSICS EXPERIMENT BY A PDP-15 + CAMAC SYSTEM, WRITTEN IN ASSEMBLER LANGUAGE AND INCLUDING MANY NEW ROUTINES OF GENERAL INTEREST

摘要

ORCODE.77 is a versatile data-handling computer routine written in MACRO (assembler) language for a PDP-15 computer with EAE (extended arith¬metic capability) connected to a CAMAC interface. The Interrupt feature of the computer is utilized. Although the code is oriented for a specific experimental problem, there are many routines of general interest, includ¬ing a CAMAC Scaler handler, an executive routine to interpret and act upon three-character teletype commands, concise routines to type out double-precision integers (both octal and decimal) and floating-point numbers and to read in integers and floating-point numbers, a routine to convert to and from PDP-15 FORTRAN-IV floating-point format, a routine to handle clock interrupts, and our own DECTAPE handling routine. Routines having specific applications which are applicable to other very similar applica¬tions include a display routine using CAMAC instructions, control of external mechanical equipment using CAMAC instructions, storage of data from an Analog-to-digital Converter, analysis of stored data into time-dependent pulse-height spectra, and a routine to read the contents of a Nuclear Data 5050 Analyzer and to prepare DECTAPE output of these data for subsequent analysis by a code written in PDP-15-compiled FORTRAN-IV.