24

 

 

 

Delta User’s Manual

 

-

 

 

 

 

 

 

 

memory,

just type:

 

 

 

 

 

-

 

 

 

 

 

 

 

PR#l

 

 

 

 

 

-

 

 

 

 

 

 

LIST

 

 

 

 

 

-

PR#g

 

 

 

 

 

The PR#l says “send everything to the printer”, the LIST

 

-

 

 

sends it, and the PR#O says “Ok, back to the screen now”. (There

 

-

are some slightly different versions of these commands in Appen-

 

 

 

dix C.)

 

 

 

 

 

 

-

Some other computers require you to open the printer as a -

 

numbered device, and then direct the output to that device. For

 

 

example,

to list a program on the printer with a Commodore

C-64

 

-

computer you type the following:

 

 

 

 

 

 

 

 

 

 

 

-

OPEN4,4

 

 

 

 

 

-

CMD4

 

 

 

 

 

 

 

 

 

 

 

LIST

 

 

 

 

 

-

PRINT#4 : CLOSE4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

This says that the printer is device 4, directs the output to it,

 

 

lists the program,

and finally

closes device 4.

 

 

-

The appendix gives more information about listing programs

 

 

on various computers. Find the appendix that tells how your com-

 

-

puter works, and try it.

 

 

 

 

 

 

 

 

 

Now that we all know how our computers address the printer,

 

-

let’s try listing a BASIC program. Load a BASIC program and

-

 

LLIST it (or however your computer does it).

 

 

 

 

 

We’ve crossed

the first major hurdle-learning how to list pro-

 

-

grams on Delta. Now we are ready to jump into the world of pro-

 

 

gramming

with Delta. But first, there

are a few fundamentals

that

 

-

we need to cover.

 

 

 

 

 

 

Establishing communications

 

 

 

 

-

 

 

 

 

 

We’ve

learned

something

about

communicating with

our

 

_

printer. Now we need to adapt what we know to printing in a

 

 

BASIC program. Generally, computers use about the same proce-

 

-

dure for printing in a program

as they do to list a program. Again

 

take a few moments to look at the appendix that relates to your

 

 

computer. We’ll continue when you have it all figured out.

-

 

Page 36
Image 36
Star Micronics Delta user manual OPEN4,4 CMD4 List PRINT#4 CLOSE4, Establishing communications