Black Box Computer Hardware IC181C 用户手册
7
CHAPTER 4: Option Selection
Any two or more ports can share a common IRQ by placing the jumpers on
the same IRQ setting, and setting the appropriate selections at E1. Consult
your particular software for IRQ selection. If no interrupt is desired, remove
the jumper.
the same IRQ setting, and setting the appropriate selections at E1. Consult
your particular software for IRQ selection. If no interrupt is desired, remove
the jumper.
NOTE
IRQ 2 on AT class machines is not available. IRQ 9 is substituted in place
of IRQ 2. To select IRQ 9, place jumper in the IRQ 2 position.
of IRQ 2. To select IRQ 9, place jumper in the IRQ 2 position.
Figure 4-1. IRQ Selection.
Figure 4-1 shows the correlation between jumper block E5 and the interrupt
jumpers (E1–E4). This example shows the Four Port RS-232 Serial Interface
shipping configuration with COM1: and COM3: sharing interrupt 4 and
COM2: and COM4: sharing interrupt 3. See Section 4.2 for more information
on the different configuration options available with Jumper E5.
jumpers (E1–E4). This example shows the Four Port RS-232 Serial Interface
shipping configuration with COM1: and COM3: sharing interrupt 4 and
COM2: and COM4: sharing interrupt 3. See Section 4.2 for more information
on the different configuration options available with Jumper E5.
E5
2
3
4
5
6
7
10
11
12
15
1 2
3 4
M
S
N
M
S
N
PORT 1 (COM1)
PORT 2 (COM2)
PORT 3 (COM3)
PORT 4 (COM4)
E4
E3
E2
E1
2
3
4
5
6
7
10
11
12
15
2
3
4
5
6
7
10
11
12
15
2
3
4
5
6
7
10
11
12
15