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From: bammi@cwruecmp.UUCP
Newsgroups: net.micro.atari16
Subject: Re: How to use Xbtimer() ?
Message-ID: <1523@cwruecmp.UUCP>
Date: Wed, 16-Jul-86 20:32:52 EDT
Article-I.D.: cwruecmp.1523
Posted: Wed Jul 16 20:32:52 1986
Date-Received: Fri, 18-Jul-86 01:07:14 EDT
References: <2874@sdcrdcf.UUCP> <2748@caip.RUTGERS.EDU>
Organization: CWRU Dept. Epid. & Biostat., Cleveland, OH
Lines: 34

> C: void xbtimer(timer, control, data, vector)
>    int timer,control, data;
>    logn vector;
> 
> This function allows you to start a timer in the MFP 68901, timer 
> is the number of the timer in the 68901. Timer A:0 Timer B:1 ect...
> 
> The other two dat and control are placed in the data and control
> registers. The long parameter is the address of the interrupt routine.
> 
> I really think it would be more useful in assembly then C, but since I
> don't have an assembler to use this I can't.
> 
> 
> 	Phil Paone

*** REPLACE THIS LINE WITH YOUR MESSAGE ***
Another point:
	The routine designated in the vector must return using RTE and
not RTS, as it is handling the intr. 

	Assembly can be imbedded in alcyon C by using the asm
construct like:
	
	asm("rte");

so you don't really need an assembler to force an RTE. I'll try and
dig up some samle Xbtimer code that i once wrote.
-- 
					Jwahar R. Bammi
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