Matt Thomas <matt@3am-software.com> writes:

> I got my ThinkPad 820 to boot (from floppy) using a serial console.
> 
> The good news is that the onboard siop is working.

Great!

>  But there's bad
> news too.  After a bit of time, the system stops responding to
> (some) interrupts and everything other the console stops responding
> and gets device timeouts.

[Please bear with me, it's been a while since we last discussed
this...]

That's what I used to see on the Ultra board, which turned out to be
interrupts not being ack'ed correctly by way of the board's Interrupt
Vector Register. Are you handling interrupts via ext_intr_ivr()?


- Klaus