Specifications

1260-14 User Manual

Addendum Page 6/98 5

Enable Control Register #2 at offset 1A

hex from <Base Address>

Bit 0 Enable Port 8 = Channels 65 - 72

Bit 1 Enable Port 9 = Channels 73 - 80

Bit 2 Enable Port 10 = Channels 81 - 88

Bit 3 Enable Port 11 = Channels 89 - 96

To enable a port of 8 digital output lines, write a 1 to the corresponding bit of the control register.

To disable the port, write a 0 to the corresponding bit of the control register.

For example, if the value 80 decimal (= 50 hexadecimal = 0101 0000 binary) is written to control

, then channels 49 through 56, and channels 33 through 40 will be enabled,

while channels 1 through 32, 41 through 48, and 57 through 64 will be disabled.

Note that when a channel is enabled, the data written to the channel will be the same as that read

from the channel (unless external circuitry prevents driving the channel high or low).

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