Digital Equipment LGplus Series, Руководство по установке

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Data Bit 8
The Data Bit 8 parameter allows access to the extended ASCII character set.
Normally, this parameter is enabled. When this parameter is disabled, the
printer interprets bit 8 of each incoming data character as a zero, regardless
of its actual setting.
The extended ASCII character set is shown in your LinePrinter Plus
TM
Programmer’s Reference Manual
Data Polarity
The Data Polarity parameter must be set to match the data polarity of your
host computer.
•
Standard (the default) does not invert the data.
•
Inverted inverts the data received on the data lines from the host
computer. Ones become zeros, and vice-versa.
Strobe Polarity
The Strobe Polarity must be set to match the data strobe polarity of your host
computer. When the host computer sends a data strobe signal to the printer,
this enables the printer to read the data bus.
•
Standard (the default) does not expect the data strobe signal to be
inverted.
•
Inverted expects the host computer to invert the data strobe signal.
Response Polarity
The Response Polarity parameter must be set to match the response polarity
of your host computer.
•
Standard (the default) does not invert the response signal.
•
Inverted inverts the response signal sent to the host computer.
Busy on Strobe
Busy on Strobe determines when the Busy signal is asserted.
•
Enable (the default) asserts a busy signal after each character is received.
•
Disable asserts a busy signal only when the print buffers are full.