use new m_devget facility

add IP, CLNP over X.25 support

set if_type, change to no default logging printfs, set addrlen & hdrlen

kernel reorg

This version appears to work with accunet; DP_XE must be asserted
in order to get continuous flag characters; pseudo-dma code must clear DP_XSM;
also netisr is a global variable and using a local in

This version appears to work with accunet; DP_XE must be asserted
in order to get continuous flag characters; pseudo-dma code must clear DP_XSM;
also netisr is a global variable and using a local in dpinput hid the def.

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This version receives packets from accunet, but won't

this one should handle up down transitions more gracefully.

This version interrupts on transmits and modem state changes;
we have yet to see a genuine input interrupt. Maybe a hardware problem.

This version compiles; otherwise untested.

date and time created 90/08/30 17:35:31 by sklower