Cursor Control. Psion PowerScan M8300 series

MESSAGE FORMATTING

6.2.1

Cursor Control

ESC [ n A Up n rows, no scroll

ESC [ n B

ESC [ n C

ESC [ n D

ESC [ G

Down

Right

Left

CR n rows, no scroll n columns n columns

ESC [ r ; c H Move r , column c

(ESC[1;1H is the upper left character position of the display)

ESC D

ESC E

ESC M

Down 1 row, with scroll

CR and cursor down 1 row with scroll

Up 1 row and scroll

NOTES:



Since CR is used as the message terminator, you must use ESC [ G or ESC E to print a CR.



The cursor row position is not affected by the currently selected font. The display always has 4 rows, so when writing with the large font, actually two rows are written to: the current one and the one below it. You will need two ESC E commands to step from one row to the next when using the large font.



The cursor column position is affected by the currently selected font. Therefore, column 6 is 36 pixels from the left border only if you last selected the 6x8 font; otherwise it could be 48 or 72 pixels from the left border.

6.2.2

Font Selection

ESC [ 0 m

ESC [ 7 m

Normal mode

Reverse mode

ESC # 4

ESC # 5

Large font: subsequent characters are written on the current row and the row below it using the 12x16 font which allows for two rows of eight characters on the display.

Normal font: subsequent characters are written using the 6x8 font,

ESC # 7 which allows for four rows of sixteen characters on the display.

Medium font: subsequent characters are written using the 8x8 font, which allows for four rows of twelve characters on the display.

6.2.3

Clearing Display

ESC [ 0 K

ESC [ 1 K

ESC [ 2 K

ESC [ 0 J

From cursor position to end of line inclusive

From beginning of line to cursor position (not inclusive)

Entire line

From cursor position to end of display inclusive

ESC [ 1 J

ESC [ 2 J

From beginning of display to cursor position (not inclusive)

Entire display; moves cursor to upper left corner on display

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