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4 unused address, 5 counter load & read registers – Measurement Computing PC104-DAS08 User Manual

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INTE = 1 enables interrupts (positive edge triggered) onto the PC bus IRQ selected
via the IRQ jumper on the PC104-DAS08.

INTE = 0 disables the passing of the interrupt detected at pin 10 to the PC bus.

IRQ is set to 1 every time an interrupt occurs. If you want to process successive
interrupts then set INTE = 1 as the last step in your interrupt service
routine.

MUX2 to MUX0. Set the current channel address by writing a binary coded number
between 0 and 7 to these three bits.

NOTE

Every write to this register sets the current A/D channel MUX
setting to the number in bits 2-0.

3.4 UNUSED ADDRESS

BASE ADDRESS + 3

This address is not used

3.5 COUNTER LOAD & READ REGISTERS

COUNTER 0

BASE ADDRESS + 4

D0

D1

D2

D3

D4

D5

D6

D7

0

1

2

3

4

5

6

7

COUNTER 1

BASE ADDRESS + 5

D0

D1

D2

D3

D4

D5

D6

D7

0

1

2

3

4

5

6

7

COUNTER 2

BASE ADDRESS + 6

D0

D1

D2

D3

D4

D5

D6

D7

0

1

2

3

4

5

6

7

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