AcQuisition Technology Quad M-module Carrier i4000 Hardware Handleiding - Pagina 15

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module will be accessed at address $ff800200. The corresponding interrupt control
register address is then $ff800301.

5.2. The interrupt controller

5.2.1.

Functional description

The Interrupt controller used with the i4000 is largely compatible the MC68153
Interrupt controller from Motorola.
The interrupt controller provides a 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.
5.2.2.

Register description

The Interrupt controller of the i4000 contains 8 programmable registers. There are four
control registers (CR0-CR3) that govern 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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