Writing Your Own Print Programs - OKIDATA OKIMATE 20 Handbook

Writing Your Own Print Programs
In case you'd like to write your own print programs, here we'll describe some of the basics.
What You Do
1. Start each print program with an OPEN state-
ment, like this:
10 OPEN 3,4
L
device number
logical file number
.___ ____ line number
2. Next enter the PRINT# statement:
What Appears/What Happens
This statement opens a channel to the printer.
The second number after OPEN identifies the de-
vice the channel is opened to. OKIMATE is identi-
fied by 4. Other devices might be a disk drive or a
a cassette tape. If you have two printers, assign
one device number 4, the other device number 5.
The first number after OPEN, the logical file num-
ber (any number from 0 to 255), identifies the
channel.
20 PRINT#3, "OKIMATE PRINTS WHAT'S WITHIN THE QUOTES"
46
The number after PRIN T# must be identical with
the logical file number used in the OPEN state-
ment.