Xycom XVME-560 Manual page 16

XVME-560 Manuai
September, 1984
2.4.2 Address Space Selection
The user is given the option of placing the AIN in VMEbus Short I/O or Standard
Memory Space. The selection is made by configuring jumper J2 and Switch 8 of Switch
Bank 2 (see Figure 2-2) as shown in Table 2-3 below.
Jumper
J2A
J2B
installed,
If jumper J2A is
If jumper J2B is installed, Switch 8
The Standard I/O Architecture recommends that the AIN operate within the Short I/O
Address Space, in order to take advantage
features, which are described in Appendix A.
If required, the AIN can operate in the Standard Address Space. The user
that in this mode, the
Standard Memory Address Space
1 2
Table 2-3.
Switch 8
Open
Closed
Switch 8 must be set to open.
must be set to closed.
AIN will always reside within the
(i.e.,
BASE ADDRESS
O P E N
Figure 2-2. Switch Bank Two
Addressing Options
Option Selected
Standard Data Access Operation
I/O
Short Access Operation
of the
Standard I/O Architecture's various
the
address range
6 7 8
should note
last 64K byte segment of the
FFOOOOH through FFFFFFH).
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