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============================================================================= AST RESEARCH, INC. TECHNICAL BULLETIN #0716 10-28-91 ============================================================================= AST PREMIUM II 386SX-20 AND TRAK ENGINEERING SOFTWARE PROBLEM: The TRAK Engineering application software "Fuel Management System" will not communicate with TRAK's custom control box through the Premium II 386SX-20 Com port. AFFECTED SYSTEMS: AST Premium II 386SX-20 with the following system board part number: 202373-003 Revision X4 and below CAUSE: Incompatibility between TRAK Engineering software and control box and AST's Com port on the Premium II 386SX-20 system. SOLUTION: This problem has been resolved. Customers experiencing this problem should contact AST and have their system board upgraded to revision X5 or above.