UDA(4) Device Drivers Manual (vax) UDA(4)

uda — UNIBUS MSCP disk controller driver

uda0 at uba? csr 0172150
uda1 at uba? csr 0160334
mscpbus* at uda?

The uda driver is for UNIBUS disk controllers that use MSCP. Among these controllers are:

DEC UDA50 UNIBUS ctlr
 
DEC KDA50 Q22 bus ctlr
 
DEC RQDX3 Q22 bus ctlr
 

The uda communicates with the host through a packet protocol known as the Mass Storage Control Protocol (MSCP). Consult the file <mscp/mscp.h> for a detailed description of this protocol.

vax/intro(4)

The uda driver appeared in 4.2BSD.

A new uda driver approach showed up in NetBSD 1.2.

February 17, 2017 NetBSD 11.0