Contec F&eIT Series, User Manual

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4. Using the I/O Address Map
ADI16-4(FIT)GY
35
Setting an Interrupt Source
This option allows you to specify an interrupt signal generation source.
The control port that sets an interrupt source assumes the following state:
Starting
I/O
address D7 D6 D5 D4 D3 D2 D1 D0
Output Command
+24
(18h)
0 0 0 0 0 0 0 1
D7 D6 D5 D4 D3 D2 D1 D0
Interrupt Mask0
+28
(1Ch)
1 1
Setting
Clock Error
Sampling
Clock Input
1
Data Over
Write Error
1
Data Read
Enable
Interrupt Mask1
+29
(1Dh)
1 1 1
FIFO
Memory
Flag
1 1 1 1
Figure 4.25. Interrupt sources
When the value [1] is output as an interrupt source, the control port is masked; when the value [0] is
output, the port is set as an interrupt source.
[1] Masked
* Initialized state
[0] Interrupt Request Enable
Following are examples in which a timer cycle is set :
outp( ADR+24, 0x1 );
outp( ADR+28, InterruptFactor );