Autocoder

[13] Symbolic Programming System[14] (SPS), was the assembler offered when IBM originally announced 1401 as a punched-card-only computer.Autocoder was the primary language of this computer, and its macro capabilities facilitated use of the Input/Output Control System which eased the programming burden.A loadable object file, on punched cards or magnetic tape, could be produced on an 8000-character model which could then be run on a 4000-character machine.[22] The Pennsylvania State University developed a "Dual Autocoder Fortran Translator" (DAFT) compiler for the IBM 7074 in the 1960s which made it extremely easy to write (within a single program) lines of autocoder instructions freely interspersed with lines of Fortran code.[citation needed] Bell Laboratories developed a program called "Peripheral Equipment Symbolic Translator" (PEST), which was a 1401 cross-assembler that ran on the 709/709x and accepted a subset of 1401 Autocoder.