<?xml version="1.0" encoding="ISO-8859-1"?><generate_set>    <!-- This "subroutine" generates the system.h text for the         altera_avalon_pio class of components.  It expects the following         variables to have been exported:                MODULE                MODULE_NAME                MODULE_SLAVE_NAME_UPPER                MMU_PRESENT                SHOW_OR                BASE_ADDRESS                HAS_IRQ                IRQ     -->        <set_variable variable="MODULE_CLASS" to="DE2_pio"/>    <export variable="MODULE_CLASS"/>    <call gtf="%GTF_DIR%/system.h_component_output.gtf"/>    <call gtf="%GTF_DIR%/MODULE_FREQ.gtf"/>    <text>#define %MODULE_SLAVE_NAME_UPPER%_FREQ %MODULE_FREQ%    </text></generate_set>