• Period (Old) Software
• New Software

Period (Old) Software

• Original Basic Binary Loaders
  These are disassembled and newly-commented versions of the old BBLs. The machine code used for the disassembly was obtained from the "STANDARD SOFTWARE SYSTEMS Operating Manual" for the 2116A/2115A models (1967).
  • Assembler listing of the Paper Tape Reader BBL
  • Assembler listing of the Teleprinter BBL (bit-banged serial I/O interface)
  • Assembler listing of the Magnetic Tape BBL (for 7 track 2020A/B drives)
  
  
• Shift/Rotate Demo
  A simple program to demonstrate the various shift and rotate instructions. The front panel is used for the display. This program was obtained from the back of the 2116A Vol. 1 manual.
  • Assembler listing
  • Binary image in ABL format, for downloading into core via the ASCII Binary Loader

New Software

• ABL - ASCII Binary Loader
  A new basic binary loader (BBL) for downloading a binary image into core, but requiring only ASCII characters to be transferred over the communications link. It is coded to use a type 12531B/C/D I/O interface (serial async RS-232), located at octal channel 11. As with the original binary loaders it resides at the top of core.
  • Assembler listing
  
  
• Blinkenlight programs
  Some simple routines to display a variety of active bit patterns on the front panel of a 2116 CPU. These routines will run on a bare CPU with no I/O interfaces.
  • Assembler listing
  • Binary image in ABL format, for downloading into core via the ASCII Binary Loader