Connect Tech Xtreme/104 User’s Manual
12 Revision 0.05
Mode 2 (two IRQs)
:
1.
Jumper position 3 on the J1 or JB1 jumper block.
2.
The odd ports (ports 1, 3, 5, & 7) interrupt on one IRQ by setting jumpers on the A or C
rows and the middle rows of IRQ blocks AB and CD.
3.
The even ports (ports 2, 4, 6, & 8) interrupt on one IRQ by setting jumpers
on the B or
D rows and the middle rows of IRQ blocks AB and CD
.
Mode 3 (two IRQs)
:
1.
Jumper position 4 on the J1 or JB1 jumper block
2.
The first four ports (ports 1, 2, 3, 4) interrupt on one IRQ by setting jumpers on the A or
C rows and the middle rows of IRQ blocks AB and CD.
3.
The last four ports (ports 5, 6, 7, 8) interrupt on one IRQ by setting jumpers on the B or
D rows and the middle rows of IRQ blocks AB and CD.
Figure 4: Examples of IRQ settings
Example: Mode 1 – one IRQ
The following example shows the settings on J1 or JB1 and the IRQ jumper
blocks so that all ports will interrupt on IRQ 4.
J1
0
1
2
IRQ mode select
3
4
5
6
7
C
D
3 4
7 9
5 6
IRQ jumper block
Xtreme/104
IRQ mode select
JB1
0
1
2
IRQ mode select
3
4
5
6
A
B
9
7
4
3
6
5
IRQ jumper block
Xtreme/104 232
IRQ mode select
Example: Mode 2 – two IRQs
The following example shows the settings on J1 or JB1 and the IRQ jumper
blocks so that ports 1, 3, 5, 7 will interrupt on IRQ 7 and ports 2, 4, 6, 8 will
interrupt on IRQ 12.
J1
0
1
2
IRQ mode select
3
4
5
6
7
C
D
3 4
7 9
5 6
10
11
12
14
15
A
B
Xtreme/104
IRQ mode select
IRQ jumper block
IRQ jumper block
JB1
0
1
2
IRQ mode select
3
4
5
6
A
B
9
7
4
3
6
5
10
11
12
14
15
D
C
Xtreme/104 232
IRQ mode select
IRQ jumper block
IRQ jumper block
Example: Mode 3 – two IRQs
The following example shows the settings on J1 or JB1 and the IRQ jumper
blocks so that ports 1, 2, 3, 4 interrupt on IRQ 7 and ports 5, 6, 7, 8 interrupt
on IRQ 10.
J1
0
1
2
IRQ mode select
3
4
5
6
7
C
D
3 4
7 9
5 6
10
11
12
14
15
A
B
Xtreme/104
IRQ mode select
IRQ jumper block
IRQ jumper block
JB1
0
1
2
IRQ mode select
3
4
5
6
A
B
9
7
4
3
6
5
10
11
12
14
15
D
C
Xtreme/104 232
IRQ mode select
IRQ jumper block
IRQ jumper block
