Epson MX-70 Manual Do Utilizador

That last chapter was a heavy one, but it gave us a good overview of many
MX-70 features. In this chapter we’ll explore a few of them in more detail.

As before, CHR$ is the magic wand. Continue to refer to Appendix B as needed
to help maintain perspective on what we’re doing and where we’re going.

There is an easy way to print 2 sizes of characters on the same line. We simply

switch back and forth between single and double WIDTH. The result is quite
impressive.

Type in this simple program:

9 PR #1

(Apple only. Apple disk uses:)
(9 PRINT CHR$ (4) “PR# 1”)

10 

PRINT 

TAB(10) ;

(TRS type uses LPRINT)

20 PRINT CHRS(14) "DOUBLE "CHR$(20)" WIDTH CHARACTERS";
30 PRINT "ADD" CHRS(14)" EMPHASIS!"
39 PR #0

(Apple only. Apple disk uses:)

(39 PRINT CHR$ (4) “PRO”“)

and RUN.

Note carefully where the spaces are positioned in lines 20 and 30. Now study
the spaces in the printout.

When a space is placed after an ASCII 14, (double width, or CANCEL single
width), that space is printed as 2 spaces. If placed after ASCII 20 (single width),
it takes up only a single space.