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Operational Modes

The LC-81 minicomputer operates in two distinct modes: Halt and Run.

Right after power on or reset the computer falls automatically into Halt Mode. No initialization software runs at this time. Once in Halt Mode, the Console can be used for examining or changing memory or I/O content.

Pressing the START or CONT button causes the machine to enter Run Mode.

Once in Run Mode, the Entry Switches and the EXAM-, EXAM+, LD, DEP buttons becomes inoperative. The Lamps Displays keep showing the current memory or I/O being accessed by the program. This is the mode in which software actually runs.

Pressing the HLT or RESET button causes the machine to enter Halt Mode again.