Star Micronics Radix User Manual page 173

Printinn With
Dot
GraDhics 159
common problem is that the BASIC interpreter in your computer
is inserting a few of its own codes. For instance, if your program
generates a CHR$(13) as valid graphics data, BASIC may follow it
with a CHR$(lO). Another problem arises with certain computers
that replace horizontal tabs (CHR$(S)) with a series of spaces
(CHR!$(32)). A possible solution to these problems is to not use the
bottom dot (which has a value of 1). This way, you will never
produce an odd number, hence, you will never have a CHR$(13)
or CHR$(S). (Th is is why we used only six pins in our plotting
program.)
That's one solution to one problem. You'll find more of each
(with specific information for your computer) in the appropriate
appendix.
Summary
Control code
Function
(ESC) "K" nl n2 ml m2. . . Print nl + 256*n2 columns of nor-
mal density graphics
(ESC) "L" nl n2 ml m2. . . Print double density graphics
(ESC) "y" nl n2 ml m2. . . Print double density graphics at
double speed
(ESC) "z" nl n2 ml m2. . . Print quadruple density graphics