This is bitBus support unbundled from epics/base
The bitbus support is only supported on vxWorks.

These are differences

1) Additional files unbundled from base
2) bbReset now named BBReset
3) ResetBug(node,link) now BBResetBug(link,node)
4) BBSnoop(link,node,seconds)
5) Int vector and level now taken from BBConfig instead of module_types.h
6) drvBitBus had several problems fixed
7) The bitbus gpib support now appears with bitBus rather than gpib.



bitbus gpib support

This requires the unbundled gpib support, which must be built before bitbus.
Each bitbus gpib bug must have a configuration command in the startup file.

drvBitBusGpibConfig(gpiblink,bblink,node)

gpiblink - The gpib link number. This is the link number that appears
           in the INP or OUT gpib link fields.
bblink - the bitbus link
node - the bitbus node.

The bblink must have already been configured.

If records are using bbgpibio link for INP or OUT these can still be supported
if gpiblink is set to the value

(bblink+1)*256 + node

You are strongly encouraged to change all records using bbgpibio links
to use gpibio links.