Installation Guide
SPARC/CPU-5TE
Page 12
FORCE COMPUTERS
1.4.10
Floppy Interface or SCSI#2 Availability on P2
It is important to understand that the availability of both the floppy and SCSI#2 devices at the
same time is dependent upon the availability of a 5-row P2 connector. When using a 3-row P2
connector, you have the choice of either the floppy or the SCSI#2 on P2. The following
describes how to configure the board for floppy or SCSI#2.
Via a 24-pin configuration switch matrix, it is possible for either the floppy interface or the
SCSI#2 to be available on the VME P2 connector on row C. The default setting enables the
floppy interface via the VME P2 connector, with the configuration switch matrix plugged into
B2/B3 and B10/B9. This means, of course, that by default the SCSI#2 is not available via the
VMEbus P2 connector on row C.
To enable the SCSC#2 via the VME P2 connector, plug the configuration switch matrix in
sockets B3/B1 and B9/B8.
FIGURE 4.
Floppy or SCSI #2 Availability on P2
CAUTION: If you use an IOBP-DS, the switch matrix must be located on B3/B1 and B9/B8
in order to route SCSI #2 to P2 row C. If you use an IOBP-10, the switch matrix must be
located on B2/B3 and B10/B9 in order to route the floppy interface to P2 row C.
B2 B3 B1
B10 B9 B8
This 3-piece configuration
switch matrix is used for
choosing either the floppy
interface or SCSI#2.
Plug the interface into
sockets B2/B3 and B10/B9
for the floppy interface.
Or
Plug the interface into
sockets B3/B1 and B9/B8
for the SCSI#2 interface.
