On Wed, 21 Jun 1995, Marc Unangst wrote:

> I'm having some problems getting the AST 4-port driver working.
> [...]
> ast0    at isa? port 0x2a0 irq 5        # AST 4-port serial cards
> com*    at ast? slave ? flags 1

At the moment, something is broken (though I'm not sure exactly what), so 
you have to specify the ports on the AST card separately.  Use

ast0	at isa? port 0x2a0 irq 5	# AST 4-port serial cards
com2	at ast? slave ? flags 1
com3	at ast? slave ? flags 1
com4	at ast? slave ? flags 1
com5	at ast? slave ? flags 1

I'm responsible for making this work on a system, and that's exactly how 
the kernel is set up.