Printer and plotter location codes
Location codes of 00-00-S1-00 or 00-00-S2-00 indicate
the printer, plotter, or tty device is connected to the standard I/O board
serial ports s1 or s2. A location code of 00-00-0P-00 indicates
the parallel printer is connected to the standard I/O board parallel port.
Any other location code indicates that the printer, plotter, or tty device is connected to an adapter card other than the standard I/O board. For these printers, plotters, and tty devices, the location code format is AA-BB-CC-DD, where AA-BB indicates the location code of the controlling adapter.
| Item | Description |
|---|---|
| AA | A value of 00 for the AA field
indicates the adapter card is located in the CPU drawer or system unit depending
on the type of system. Any other value for the AA field
indicates the card is located in an I/O expansion drawer; in which case, the
first digit identifies the I/O bus and the second digit identifies the slot
number on the bus, in the CPU drawer, that contains the asynchronous expansion
adapter to which the I/O expansion drawer is connected. |
| BB | The first digit of the BB field identifies the
I/O bus containing the adapter card. If the card is in the CPU drawer or system
unit, this digit is 0 for the standard I/O bus and 1 for
the optional I/O bus. If the card is in an I/O expansion drawer, this digit
is 0. The second digit identifies the slot number on the
I/O bus (or slot number in the I/O expansion drawer) that contains the card. |
| CC | The CC field identifies the connector on the
adapter card where the asynchronous distribution box is connected. Possible
values are 01, 02, 03,
and 04. |
| DD | The DD field identifies the port number on the asynchronous distribution box where the printer, plotter, or tty device is attached. |