IBM 32x, W2H APA commands, Backspace without deleting, Line feed, Input/output device commands

11-9-2005 Input/output device commands

APA commands

This section describes the following APA VFD commands:

vBackspace without deleting

vLine feed

vCarriage return

vTest

vClear display

vDisplay position

vDelete to end of line

vDimming

vCursor mode

vScreen mode

vHorizontal scroll

vDisplay mode

vUser definable font

vGraphic display mode

vDouble-size letter in horizontal

vCharacter code set of full-size letter

vCharacter code set of half-size letter

vHorizontal scroll on all lines

vFont selection

vNull

Note: The command code format shown in the following topics is in hexadecimal format.

Backspace without deleting

08

Purpose:

The write-in position is shifted to the left one digit and the displaying screen is not changed. This command is ignored when the write-in position is on the least significant digit.

Line feed

0A

Purpose:

The write-in position is shifted to the next row on the same digit position. If the write-in position is on the bottom row, the displayed character is scrolled up to the upper row. All characters on the bottom row are cleared. The write-in position is not changed. The displayed character under the screen mode of the 24x24-dot 1 row+16x16-dot 2 rows is not scrolled up from the row of 16x16-dot format to 24x24-dot.

Appendix A. Input/output device commands A-9