SurePOS 500 4846-XX5 Technical Reference

2D8h

3E8h

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:

3

4

5

6

7

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:

VFD/CD Enabled

VFD/RS-232 Enabled

Cash Drawer Enabled

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IBM 500 manual Serial Port D IRQ, Options Serial Port D Function

500 specifications

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