Apple IIe - Page 22

22 Apple lie Users Handbook
In either low or high resolution graphics, the user can include 4
lines of text at
the bottom of the display. In low resolution
graphics,
these 4 lines of text replace the final 8 rows of blocks. In
high resolution graphics, they replace the lower 32 rows of dots.
These display
modes which contain bdfh text and graphics
characters are known as mixed modes.
Cassette Recorder
Your Apple lie can be connected to a cassette recorder via the
cassette interface. The cassette recorder can be used to store
programs , or data transferred from RAM . These programs or data
later can be transferred back into RAM.
The cassette
interface jacks are located on the rear of the I le. The
cassette interface jacks
can be used to connect the Apple to a
standard cassette tape recorder . The tape recorder can be used
as a data
storage device for the Apple.
The
two cassette interface jacks are labeled with iltustrations.
The
output jack is labeled with a picture of an arrow pointing
towards a cassette. The input jack is labeled with a picture of an
arrow coming from a cassette.
The cassette
input jack should be connected to the cassette
recorder's earphone or monitor output jacks. The input jack will
listen
to the tones on the cassette tape, translate those tones into
data , and then store them in memory .
The OUT
or output jack should be connected to the cassette
recorder 's microphone input jack. The output jack is connected
to a soft switch just as the Apple speaker is. The cassette's output
jack soft switch memory address is 49184 (-16352 Integer BASIC).
By referencing this address, the voltage at the output jack will be
varied, causing a tone to be produced on the tape . By altering
the pitch and duration of this tone , data can be recorded on the
cassette tape. ·
An Apple
lie/cassette recorder hook up is pictured in Illustra-
tion 1-6.
The cassette recorder will be covered in more detail in
Chapter 5.