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Carriage return
0D
Purpose:
The write-in position is shifted to the most significant digit of the same row.
If the write-in position is on the most significant digit, the command is
ignored.
Test
0F
Purpose:
Causes the 40 characters in the IBM code page 437 character (X'20'-X'47')
set to be displayed one time. In addition, at the end of the test, a test
pattern is written that turn all pixels.
When Test is working, all codes are ignored. The test command X'OF' is
only available when the IBM code page 437 is selected.
When the other font table except IBM code page 437 is selected, test code
is ignored.
Clear display
(1B), (5B, 32), (4A)
Purpose:
All the displayed characters are erased. The write-in position is not
changed.
Display position
1B 5B Py 3B Px 48
Purpose:
Instead of writing the character from the first digit, use this command to
specify the write-in start position. The write-in position is shifted with Py and
Px and is based on the half-size letter of the font, which is specified with
the Screen Mode command. Py indicates the position of the row and Px the
digit. Py and Px must be defined under the following conditions:
v If Py is 0, it is set to 1 (X'31').
v If Py is greater than the bottom row, it is set to the bottom row.
v If Px is 0, it is set to 1 (X'31').
v If Px is greater than the least digit, it is set to the least digit.
A
special form of the display position command exists (1B 5B 48 27),
which sets the write-in position to the home position (Py=1 and Px=1).
Delete to end of line
1B 5B 30 4B
Input/output device commands
11-9-2005
A-10 SurePOS Installation and Service