[comp.unix.questions] Parity Problems with 4.3 dhu11 Driver

wdw@aucs.UUCP (10/29/87)

We are running BSD 4.3 on a VAX 11/780. To date we've been using two
DMZ32 muxes that have caused us no serious problems. We are now in the
process of replacing the DMZ32's with equipment from GANDALF (VGS
2518).  This equipment emulates a dhu11 and we have three of them in
our machine and they are working after a fashion.

The problem we are now encountering is dhu terminals will only work
when configured for even parity. stty reports that both even and odd
should be acceptable. The DMZ lines which are configured exactly the
same way by getty also report that even and odd are allowable and do
work with any parity setting on the terminal. Is there some problem
with parity processing in the dhu11 driver or should I be suspicious of
Gandalf's dhu11 emulation?

We are considering modifying getty to set pass8 mode but would prefer
not to do this. If anyone has any tips for us or suggestions where to
look I'd appreciate hearing. Like always my boss would like to sell the
DMZ32's immediately so I am hoping for a quick fix.
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