LEAH: an introduction to behavioral abstraction and co-simulation using Perl and Verilog

The paper introduces LEAH, (L2 Emulation Apparatus at a High level), which is a Perl based abstraction of multiprocessor Intel Pentium Pro Processor systems, including processors, memory and I/O subsystems. LEAH is connected to a Verilog simulation through a Unix socket and PLI. Using Perl as its programming base, LEAH abstracts behavior at a high level. Multiple scripts based on the rich facilities of Perl are executed by abstract processors in a multitasking environment. Internal events, such as a cache miss, trigger the use of the Unix socket interface to a Pentium Pro bus interface in the Verilog simulator.