> (2a) change my driver (the one on ftp.fwi.uva.nl) to use the 
>      softclock interrupt routine for comsoft() instead of
>      the tty software interrupt.
>      
> or
> 
> (2b) if possible, add a bit of code to alpha/machdep.c for tty software
>      interrupts in do_sir() and call comsoft() from there.
>      It looks like the hp300 needs this too.
> 
> Question:
> Should I go for (2a) or (2b) ?
> or
> Which is "better" 'software interrupts' or 'periodic checks via softclock()' ?

Software interrupts.  Since network "isr"s exist, there is no reason why
tty (or disk/tape or ...) isrs should not also exist.

-- 
Matt Thomas               Internet:   matt@3am-software.com
3am Software Foundry      WWW URL:    http://www.3am-software.com/bio/matt.html
Westford, MA              Disclaimer: I disavow all knowledge of this message