Xycom XVME-240 User Manual page 17

XVME-240 Manual
October, 1984
2.4.3 Supervisor/Non-Privileged
The DIO can be configured to respond to only Supervisory access, or to both Non-
Privileged and Supervisory accesses, by selecting the position of Switch 7 (located in
Switch Bank 2, see Figure 2-3), as shown in Table 2-4 below.
Switch 7
Closed
2.4.4 Address Modifier Reference
The following table (Table 2-5) indicates the actual VMEbus
that the DIO will respond to based on the position of the two options discussed in the
previous two sections.
Short
I/O
Standard
Address
I
Mode
Table 2-4.
Supervisory or Non-Privileged
Supervisory Only
Open
Table 2-5. Address Modifier Code Options
Switches
7 8
Closed Closed
Open Closed
Closed Open
Open Open
Selection
Privilege Options
Privilege Mode Selected
Jumper Address Modifier Code
DIO will respond to
J2
B
B
A
1 A
2-7
Address Modifier code
29H or 2DH
2DH only
39H or 3DH
3DH only
I