Apple IIe - Page 243

Apple lie Graphics 243
accomplishes this, as would two BASIC POKE commands .
]
POKE 232,0
]
POKE 233,31
Saving a Shape Table
To save a shape table on cassette tape, three data values are
required . The starting address and ending address of the shape
table must be
known . Also the difference between the two must
be
known. In our example,
STARTING ADDRESS 1FOO
ENDING ADDRESS 1FOD
DIFFERENCE OD
The difference must be stored in the memory location 0, low
byte first. From the monitor, enter the following:
* 0: OD 00
Now write all necessary information to cassette tape by entering
the following :
* 0.1W 1F00.1FODW (no return)
Do not press the RETURN key until the RECORD button has
been pressed on your recorder.
To use the tape, rewind it to the beginning of the stored shape
table. Next,
enter the following BASIC command.
SH LOAD
The console speaker will be activated twice upon comple t ion of
the command .
A shape
table can also be stored on a floppy disk. The BASIC
BSA VE command could be used to store the table .