Dataproducts Submenu

Data Polarity

The Data Polarity parameter must be set to match the data polarity of your host computer.

Standard. Does not expect the host computer to invert the data.

Inverted. Expects the data received on the data lines from the host computer to be inverted. Ones become zeros, and zeros become ones.

Response Polarity

The Response Polarity parameter must be set to match the response polarity of your host computer.

Standard. Does not invert the response signal.

Inverted. Inverts the response signal sent to the host computer.

Latch Data On

Specifies whether the data is read on the leading, middle, or trailing edge of the data strobe signal.

Prime Signal

Enable. The parallel port will perform a warm start (reboot) if the host asserts the Prime Signal.

Disable. The parallel port will not perform a warm start (reboot) if the host asserts the Prime Signal.

TOF Action

Reset. A form feed is performed before a warm start when the prime signal is asserted from the host. This setting is used only if the Prime Signal parameter is enabled.

Do Nothing. Nothing occurs before a warm start when the prime signal is asserted from the host.

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Compaq 5531, 5532, 5525B user manual Data Polarity, Response Polarity, Latch Data On, Prime Signal, TOF Action