Compaq Contec COM-2(PC)F Manual de usuario Pagina 34

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Hardware Setup
COM-2(PC)F 25
Setting Procedure
The I/O address is set using a DIP switch (SW1) on the board.
SW1
1
2
3
4
O
F
F
MODE
1
2
3
4
Figure 3.2. I/O Address DIP Switch
Table 3.1. I/O Address Settings
SW1 Interrupt Vector
Bit 1 Bit 2 Register Address
ON Enhanced 1A0~1A7 1BF
OFF Enhanced 2A0~2A7 2BF
ON COM3 3E8~3EF ---
OFF COM1 3F8~3FF ---
SW1 Interrupt Vector
Bit 3 Bit 4 Register Address
ON Enhanced 1A8~1AF 1BF
OFF Enhanced 2A8~2AF 2BF
ON COM4 2E8~2EF ---
OFF COM2 2F8~2FF ---
I/O AddressFunction
Function I/O Address
C
N
1
C
N
2
ON
OFF
ON
OFF
Figure 3.2 shows the CN1 bace I/O address set to 2A0H and the
CN2 bace I/O address set to 2A8H.
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