H
Programming the KFQSA Adapter
The KFQSA emulates a UQSSP controller for each Integrated Storage Element
(ISE) to which it is connected, and thus presents a separate CSR address for
each emulated controller. The KFQSA must be programmed with a correct
CSR for each ISE on the DSSI bus. Interrupt vectors for the KFQSA are
programmed automatically by the operating system.
Unlike most other Q–bus controllers, the KFQSA CSR addresses are not
set with switches or jumpers. They are contained in nonvolatile memory
on the KFQSA module, in the form of a configuration table. To access the
configuration table, the KFQSA needs to have a valid address already in the
table. This could be preprogrammed at the factory, but then you need to have
an ISE installed on the DSSI bus with the proper bus node ID that has already
been programmed. Another way to a get a valid address is to use the service
switch (Switch 1
ON = SERVICE mode) on the KFQSA. Table H–1 shows the addresses
available. It is easier to do if the switches are set as shown for the range of
addresses from 0774420 to 0774434 in the upper portion of the table.
Table H–1 Preferred KFQSA Switch Settings
Switch 1
Switch 2
Switch 3
Switch 4
CSR Address (Octal)
On
Off
On
On
0774420 (fixed)
On
Off
On
Off
0774424 (fixed)
On
Off
Off
On
0774430 (fixed)
On
Off
Off
Off
0774434 (fixed)
(continued on next page)
Programming the KFQSA Adapter H–1
