CH Tech i4000 user manual Block Diagram, Register Description

i4000 - Quad M-module carrier for VMEbus
User Manual	Version: 1.2

5.	FUNCTIONAL DESCRIPTION
5.1.	BLOCK DIAGRAM

Figure 7 i4000 block diagram

The interrupt controller used on the i4000 is largely compatible with the MC68153 interrupt controller from Motorola.

The interrupt controller provides means for the modules to ask for an interrupt of the processor activity and receive service from the processor. The interrupt controller on the i4000 acts as an interface device requesting and responding to interrupt acknowledge cycles for up to 4 independent modules.

5.1.1.REGISTER DESCRIPTION

The interrupt controller of the i4000 contains 8 programmable registers. There are four control registers (CR0- CR3) that control the operation of the interrupt controller and four vector registers (VR0-VR3) that contain the vector data used during an interrupt acknowledge cycle. Every module is assigned one register pair.

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