Abstract: An interface and method are disclosed for facilitating writing and modifying of lines of programming code on a computer having a processor and a display. The lines of code form a script, and the interface runs on the processor and is displayed on the display. A script display section displays at least a portion of the script, and an operation code display section displays a plurality of operation codes. At least some of the operation codes have at least one adjustable element. A selection of one of the operation codes is made to place a line of code corresponding to the selected operation code in the displayed script at a pre-selected script location. A selection device selects one of the lines of code in the displayed script, and a line display section displays the selected line of code according to each adjustable element therein. Each such adjustable element is separately displayed and separately adjustable. The adjustment of at least one adjustable element is intelligently restricted in a dynamic manner.

Abstract: Individual pieces of digital equipment such as I/O units are provided each with a connect circuit which includes a ROM containing an otherwise incomplete but device-specific, dedicated service program; and each such program portion completes a likewise incomplete program contained in a processor so that this processor can serve as a time-shared controller for each I/O unit. The system includes a common bus, and particular features relate to process inclusion of all ROM's in a common memory continuum.