Integrated circuit including interrupt controller with...

Details Integrated circuit including interrupt controller with... Integrated circuit including interrupt controller with...

2005-07-12

2005-07-12

Myers, Paul R. (Department: 2111)

Electrical computers and digital data processing systems: input/

Interrupt processing

Multimode interrupt processing

C710S264000, C710S266000, C710S267000, C712S043000

Reexamination Certificate

active

06917997

ABSTRACT:
A interrupt controller includes specialized interfaces and controls for ARM7TDMI-type microcontroller cores. Such sends interrupt vectors and IRQ or FIQ interrupt requests to the processor depending on particular interrupts received. Wherein, THUMB program execution is more economical with program code space, and an interrupt service routine preamble is coded in ARM program code to cause a switch to THUMB program execution. The interrupt service routine preamble is shared amongst all the interrupt service routines to further economize on program code space.

REFERENCES:
patent: 6263396 (2001-07-01), Cottle et al.
patent: 6382758 (2002-05-01), Chausanski et al.
patent: 6601126 (2003-07-01), Zaidi et al.

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