interrupt.vhd

This code contains all the interrupt generation logic and includes the registers interrupt mask(imsk) and the instruction address register(IAR)

imsk_in

input to the imsk register

imsk_load

load enable of the imsk register

imsk_oe

output enable of the imsk register

c_iar_oe

output enable of the IAR register

clr_globalmsk

this signals the irq recognition

Sbus_out

input/output bus driven by the IAR register and the irq register.