File Management - IBM

(SBCS)
A
B
1
2
1-Byte Code
X’C1’
X’C2’
X’F1’
X’F2’
2-Byte Code
(DBCS)
X’42C1’
X’42C2’
X’42F1’
X’42F2’
DBCS code scheme
X’4481’ (Japanese)
X’457D’ (Japanese)
X’8877’ (Korean)
X’4589’ (Japanese)
X’4F99’ (Simplified Chinese)
X’5B70’ (Traditional Chinese)
X’hhhh’ indicates that the code has the hexadecimal value, "hhhh".
1-Byte Codes: 256 characters
2-Byte Codes: 256 X 256 characters
Figure 17. Single-byte and Double-byte Code Schemes
198 File Management V4R5
RV3H013-0
IBM supports two DBCS code schemes: one for the host systems, the other for
personal computers. The IBM-host code scheme has the following code-range
characteristics:
First byte
hex 41 to hex FE
Second byte
hex 41 to hex FE
Double-byte blank
hex 4040
In the following figure, using the first byte as the vertical axis and the second byte
as the horizontal axis, 256 x 256 intersections or code points are expressed. The
lower-right code area is designated as the valid double-byte code area and x is
assigned to the double-byte blank.