----- Original Message -----
From: "Simon Owen" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, October 30, 2008 5:31 PM
Subject: Re: interrupts
David Brant wrote:
I'm using mode 2 interrupts when I use sim coupe's debugger I get the
normal frame interrupt and then a interrupt at line 0 point 52 (real
line not SAM coupe line) anyone know whats producing it?
It still sounds most likely to be a re-triggered interrupt, even if the
status port is &FF by the time you check it. Is your interrupt handler
fairly short? (close to the 128 cycles the interrupt is active for)
If you can e-mail me a test disk image I'll be happy to take a look.
Si
Yes its 76 cycles long, so that must be what's happening. While we are on
the subject, is there any reason to use RETI over using just RET with
interrupts.
