Avery Dennison 6035 Programmer Manual Rev.CA 6/01 - Manual (Page 15)

2-2 Programmer’s Manual
D i s p l a y
The printer has either a 4- or 8-row display of 20 characters
each. The printer can display characters in either reverse or
normal video. A display backlight is also available.
Several functions that manipulate the display use a coordinate
system to access a certain point on the display. Coordinate
(0,0) (row, column) is the display’s upper-left corner.
Printers with 4-row displays have four virtual display pages
(numbered 0-3), and printers with 8-row displays have two
display pages (numbered 0-1). Each display page has its own
cursor. Only one page appears on the display at a time. To
ensure the
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application begins on the same display page every time, use
vidSetPage to set the display page at the application’s
beginning.
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display pages are empty at the application’s beginning, use
vidScroll to clear the pages at the application’s beginning
and end.
An application can manipulate any display page, regardless of
the current page. To manipulate the display, use the functions
with the vid prefix (see Chapter 4, “Function Reference”).
If the application writes to
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a display page other than the current one, the displayed
information does not appear until the application uses
vidSetPage to switch to the new display page.
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the current display page, the displayed information appears
immediately.