[ECOS] ISR occurs, but DSR does not.

["Trenton D. Adams" <tadams at extremeeng dot com>]

This is in relation to another question I posted to the list earlier.
It's called "PCMCIA Standard CIS access".

Anyhow, a summary is below.

Whenever I enable the card by setting the card Enable bit in one of the
CL-PS6700 registers, the system hangs.  I eject the card, and my threads
resume.  

I now have new data to add to the problem since I had a long weekend! :)

I re-insert the card, and the system hangs again.  I eject the card
again, and my threads resume again. This occurs over and over.  

Before the weekend I put CYG_TRACExx lines in my DSRs, but not in the
ISRs because I assumed that my DSRs would always be reached.

I have now put the trace lines in my ISRs too.  My ISRs are reached but
my DSRs are not.  I need to know what might be happening.  If no one
knows off hand, just point me to the appropriate source code for
interrupt handling.

This only occurs if I try to enable the card.  I don't know how working
with the PCMCIA controller could possibly affect eCos' interrupt
handling, but it must be some how.  Also, my interrupts occur normally
without setting the enable bit.

Could this happen for some reason because of the fact that the CL-PS6700
has IRQ registers as well?