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•
••
...
22
I/O Port
Address
•
Y2X8
Y208
Y218
••
Y258
•••
Y268
Y2A8
Y2B8
Y2E8
TABLE 6
EMS I/O Port Selections
(Dipswitch SWI and SW2)
SWI and SW2 Positions
1
2
3
4+
6
7
8
9++
ON
ON
ON
ON
ON
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
ON
Positions 1-4 are for EMS I/O Port 1 (SW1).
Positions 6-9 are for EMS I/O Ports 2 (SW1) .
EMS I/O port addresses are selectable and a number of
1/0
ports
have been reserved for EMS with the basic setting being Y2X8. The
X value is a variable that you can select to avoid port address con-
flicts in your computer.
Select the X variable by changing the set-
ting of positions 1-4 and 6-9 of SW1.
Y cannot be selected by the
user; it has values of 0, 4, 8, and C .
258 is the factory setting for EMS I/O Port 1.
268 is the factory setting for EMS I/O Port 2.
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