----Original Message-----
From: Sean Breheny <shb7@CORNELL.EDU>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Sunday, September 28, 1997 10:50 PM
Subject: Re: ISA bus IRQ interface

>Thank you for the information, but I still have one question, how does the
>microprocessor ack the IRQ? I am looking at a diagram of the ISA bus and I
>don't see any IRQ ack pin or anything like that.
That is up to you.  Generally in your ISR you do an IO write to a memory
 location to tell the board
you have gotten it.

HTH,

Alan G. Smith


+---------------------------------------------------------
| Alan G. Smith
| ags@poboxes.com
| http://www.innovatus.com/ags