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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: bm07 on March 13, 2010, 04:30:56 PM

Title: Level 7 interrupt button on A3000
Post by: bm07 on March 13, 2010, 04:30:56 PM

Has anyone added a Level 7 interrupt button to their A3000?  If so where did you connect to IPL0-2?
 
Thanks.

Title: Re: Level 7 interrupt button on A3000
Post by: Tenacious on March 13, 2010, 05:35:23 PM

Would you care to expand your question?  What is it?  What's its purpose? How does it improve the machine?  Will it perfectly brown toast?

Title: Re: Level 7 interrupt button on A3000
Post by: bm07 on March 13, 2010, 06:16:24 PM

It is primarily useful for programmers; the button will let another piece of software like Hrtmon take control of the machine.  Won't brown toast but could brown your CPU if not wired correctly. :)  On my 2000 I have one connected to the 3 pins of the CPU socket.  I'll probably try something similar on the 68030, but thought I would ask if anyone else has done this...

Title: Re: Level 7 interrupt button on A3000
Post by: Tenacious on March 13, 2010, 07:34:08 PM

Oh.  Cool.  IIRC, the 68030 is surface mounted.  Were you originally asking for schematic info?

Title: Re: Level 7 interrupt button on A3000
Post by: Zac67 on March 13, 2010, 08:55:19 PM

CPU slot: pins 120,124,128
Paula: pins 13-15
Zorro: pin 40
U701: pin 8

Zorro and U701 have unencoded _INT7 - probably the easiest way

Title: Re: Level 7 interrupt button on A3000
Post by: mongo on March 13, 2010, 08:56:17 PM

Quote from: bm07;547448

Has anyone added a Level 7 interrupt button to their A3000?  If so where did you connect to IPL0-2?
 
Thanks.

Paula would probably be a good place. Pins 13,14, and 15 are IPL0-2.