8.2.3 Jumper
Setting:
Note:
user should remove R19, R20, R21, R22 and R23 in the 7188XC first.
J1:
I/O expansion bus, connect to J1 of 7188XC
J2:
I/O expansion bus, connect to J2 of 7188XC
J7:
Three channel of 8 D/O
TP0:
Original function on 7188XC
TP1:
Five channel of 8 D/O
Jumper:
Select
TP0
or
TP1
function
TP0:
JP9 and JP8 closed
TP1:
JP9 and JP10 closed
8.2.4 Programming:
outportb(BASE, DoVal); /* for all 8-channels */
Note:
1. The default value of BASE is 0.
2. It is
not
recommended to change the value of BASE from 0 to another
value.
3. DoVal=0
turn all 8-channel OFF
DoVal=1
turn chennel_0 ON, the other channels OFF
DoVal=0xff turn all 8-channel ON
I/O Expansion Bus for 7188X/7188E User’s Manual, Jan/2005 v1.5, 7PH-000-15---45