AST RESEARCH TECHNICAL BULLETIN TB-0026A 8-20-84 MONOGRAPH COMPATIBILITY Compatibility testing has determined that the following items are plug compatible with the MonoGraphPlus: 1. AMDEX 310A 2. Leading Edge computer, model MP 1673L, with monitor model no. 41-220-T. Note that Leading Edge has a resident clock that cannot be disabled. 3. Princeton Graphics Systems (PGS) model MAX-12.