The DBCS plane contains double-byte character set (DBCS) attribute data for each character and field attribute in the presentation space. The DBCS character attribute values are described in the 'Character Position' column of the table below. The position of the DBCS character attribute data corresponds directly to the respective character in the Text Plane. The DBCS field attribute values are described in the 'Field Attribute Position' column of the table below. The position of the DBCS field attribute data corresponds directly to the respective field attribute in the Field Plane.
The meaning of the DBCS plane attribute values are as follows:
Table 7. Double-byte Character Set Attributes (DBCS only)
| Bit Position (0 is least significant bit) | Character Position | Field Attribute Position |
|---|---|---|
| 7 | Double-byte character | Reserved |
| 6 | The first byte of the double-byte character | Reserved |
| 5 | Shift out (SO) | Reserved |
| 4, 3 | Shift in (SI) - bit position 3 | 5250 DBCS related field
|
| 2 | Reserved | SO/SI enabled (3270 only) |
| 1 | Reserved | Character attributes exist (3270 only) |
| 0 | Reserved | 5250 DBCS related extended field
|
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