Apple IIe - The 80-Column Board Enhancements; 80-Column Board Overview and Activation

CHAPTER 8.
THE 80-COLUMN BOARD
Unlike its predecessors , the Apple lie has an additional slot built
into its motherboard. The slot is called the auxiliary expansion
slot. This slot accepts one of two peripheral expansion cards .
One of the cards provides the Apple lie with extended display
capability as well as an additional 64K of memory. The other card
provides only for the extended display. Since the extended
display capability of both cards is identical, all references to the
cards in this chapter shall be "The Apple 80-column board".
The Apple 80-column board allows the computer to display a full
80 columns on the screen. It also allows for additional editing
features, including screen editing.
The 80-column board can be used with Pascal, CP/M*, or BASIC.
The 80-column board is automatically switched on whenever
Pascal or CP/M is used. However, this is not the case with BASIC.
When using CP/M , all features of the 80-column board are
automatically activated. When using Pascal, all features except
the cursor up and cursor down keys are functional. This can be
remedied through execution of the SET UP program provided
on the Pascal Disk, Apple 3.
As mentioned earlier, set up with BASIC is more complex . This is
due to the fact that the Apple lie was designed to be software
compatible with the Apple II and Apple II+ computers.
* CP/M is a trade mark of Digital Research.