68300

Hello,
 
Please give some more details on your problem.  I am simply guessing on this but if your program is simply halting (or appears to halt) when an interrupt is asserted, my best guess is that you have not set up properly for an Interrupt Acknowledgement Cycle.
 
You can do this by programming a Chip Select Base Address and Chip Select Option register.  Set up the Base Address Register with the value $FFF8.  Then, in the Chip Select Option Register code the fields as follows:  Mode = Async, Field = Both Read and Write, Strobe = AS, DSACK = 0000, Space = CPU Space, IPL = 000 for all interrupts and AVEC = 1.
 
If you have the Bus Monitor turned on in the SYPCR register and you have not properly set up for the interrupt acknowledgement cycle, the machine will take a Spurious Interrupt.
 
Let me know if any of this works.
 
Charlie

-----Original Message-----
From: wflsa [mailto:wflsa@...]
Sent: Sunday, April 06, 2003 11:18 PM
To: 68300@yahoogroups.com; 68300@yahoogroups.com; 68300@yahoogroups.com
Subject: [68300] Can I user the Interrupt of MC68376


I hope use  Interrupt server program in IRQ pin of the MC68376. when 
a low level is generated, MCU is call my specify server program. Now, 
I generate a low level is IRQx Pin, then MCU is Halted(can't work). I 
don't know Why? please help me! thanks. 

  




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