Interrupt Service Routines

Files
file	commsISRs.c
	Send and receive bytes serially.
file	ignitionISRs.c
	Turn ignition channels on and off.
file	injectionISRs.c
	Injection ISR substitutions.
file	interrupts.c
	Interrupt Vector Table.
file	LT1-360-8.c
	LT1 Optispark.
file	MiataNB.c
	Miata from 9x to 0x.
file	miscISRs.c
	Miscellaneous Interrupt Handlers.
file	MissingTeeth.c
	Missing teeth, mostly 36-1 and 60-2.
file	NipponDenso.c
	Reads Nippon Denso 24/2 sensors.
file	realtimeISRs.c
	Real time interrupts.
file	Simple.c
	Reads any signal that is once per cylinder.
file	Subaru-36-2-2-2.c
	Subaru 36 minus 2 2 2.

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Detailed Description

These files contain special functions that take no arguments and have void return type. They can not take arguments or return anything as they are called asynchronously by the hardware through a special jump table that contains the start address of each one. Typically these functions take care of handling asyncronous external events that are triggered through some sort of peripheral module. Examples of types of events that require interrupts and associated handlers are listed below.

Examples:

• change of pin voltage state (high to low or vice versa)
• data received by a communication module
• buffer for data to be sent by a communication module requires refilling
• real time clock ticks
• timer module ticks