============================================================================= AST RESEARCH, INC. TECHNICAL BULLETIN #0681 05-17-91 ============================================================================= PREMIUM EXEC SUSPEND/RESUME AND PROTECTED MODE The Premium Exec 386SX Suspend/Resume feature will not function when running software that requires Protected Mode operation. This includes applications, such as Windows 3.0 and extended memory managers (i.e., QEMM and ASTEMM). This problem is caused by the 386SX microprocessor's requirement for applications or memory managers using extended memory to run in protected mode only. All 386SX "notebook" type computers, equipped with a Suspend/Resume feature, exhibit this anomaly and to date, there are no known resolutions.