Distinguishing Between Certain Characters

This document, FCO VT320-I001, details the procedure for replacing the character font ROM in VT320-A3, B3, and C3 terminals. The replacement addresses issues with character readability when the terminal is in 132-column mode. This action effectively updates the firmware from version V1.1 to V1.2. The document provides instructions on disassembly, ROM replacement, reassembly, and testing to ensure proper operation after the upgrade.