SurePOS 500 4846-XX5 Technical Reference
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2D8h
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3E8h
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3F8h
Serial Port D IRQ
Selects the IRQ used for Serial Port D. Using the default value is recommended. If modified, ensure the selected IRQ
does not conflict with other ports as values cannot be shared.
Default: 6
Options:
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3
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4
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5
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6
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7
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11
Serial Port D Function
This option controls the Serial Port D operation.
The IBM Character Display (both integrated and distributed) and the IBM cash drawers share serial Port D. If you do
not use either type of these types of I/O devices, then serial port D is available as a fourth standard serial port. Port D
is a 15-pin D-shell connector that includes power as well as the serial port signals. The system communicates with the
displays in a unidirectional mode. The cash drawer operates in bi-directional mode. The cash drawer must be disabled
when Serial D is used as a bi-directional COM port.
If you have at least one IBM cash drawer attached, you must specify the Cash Drawer setting as Enabled. The
Disabled setting allows you to connect an OEM device to the Serial D port when a cash drawer is not present. If you
use an IBM cash drawer, you can only attach an IBM character display (integrated or distributed) to the system.
Default: VFD/CD Enabled
Options:
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VFD/CD
Enabled
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VFD/RS-232
Enabled
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Cash Drawer Enabled
