PDP-11 BASIC

This document is the official programming manual for PDP-11 BASIC, designed for single-user paper tape software environments. It serves as a guide for users to develop, edit, debug, and execute programs on a minimal 4K PDP-11 system. Key features include:

• Language Syntax: Detailed explanations of basic vocabulary, mathematical functions (e.g., SIN, COS, LOG, ABS), and data input/output.
• Programming Operations: Instructions on using LET, FOR/NEXT loops, GOSUB/RETURN subroutines, and array handling with DIM statements.
• System Commands: Documentation for operations such as LIST, DELETE, SAVE, OLD, and the use of the CTRL/P command for runtime control.
• Error Handling: A comprehensive index of fatal and non-fatal error messages to aid in program debugging.
• Advanced Features: Guidance on integrating Assembly language programs using the EXF function and internal BASIC routines, along with documentation on loading procedures (Bootstrap and Absolute Loaders) and hardware operation for the ASR33 Teletype.