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[88] 6502 irq

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forrestlyu

Post subject: [88.1] 6502 irq

Posted: Fri Jan 05, 2001 12:56 am

i using weltrend 505f 6502 microcontroller
met a problem which there are seven source can
go irq ,if i enable that seven source in same time
How can i identfy which source want interrupt

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GARTHWILSON

Post subject: [88.2] 6502 irq

Posted: Fri Jan 05, 2001 4:22 am

Joined: Fri Aug 30, 2002 1:09 am
Posts: 8546
Location: Southern California

I've never heard of the 505f microcontroller, but I'm sure there are status registers or interrupt flag registers that your interrupt-service routine (ISR) can poll, in order of priority, to not only see what caused the interrupt(s), but to service them in order of importance or urgency if there was more than one at a time. Is there information about this microcontroller on the web? I'm interested.

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http://WilsonMinesCo.com/ lots of 6502 resources
The "second front page" is http://wilsonminesco.com/links.html .
What's an additional VIA among friends, anyhow?

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