Through Microsoft Windows CE .NET, Microsoft has upgraded the interrupt architecture of Windows CE. The ability of the operating system (OS) has greatly expanded the ability of Windows CE .NET to support many interrupt architectures. This article explores the scheme of processing interrupt from the perspective of the original equipment manufacturer (OEM) and application developers. This article also explores the OEM Adapter layer (OAL) interrupt service routine (ISR) processing; provides an installed ISR, including a simple entry-level shell; interrupt service thread (IST) interrupt processing, and provides one Initialize and perform templates. Finally, this paper analyzes the delayed root of ISR and IST.
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