This paper presents an experimental implementation of the Java Virtual Machine (JVM) that runs inside the kernel of the Solaris operating system. The implementation was done by porting an existing small, portable JVM, Squawk, into the Solaris kernel. The first application of this system is to allow device drivers to be written in Java. A simple device driver was ported from C to Java. Characteristics of the Java device driver and the device driver interface are described.
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