Gemini Industries Printer user manual Restore Width

Fundamentals of Dot Matrix Prlntlng

!O	RESTORE
15	WIDTH		“LPI!:“,255
20	LPRINT		CHR$(??):“@“:CHR~(27):“~”
30	FORL -			1 TO		2
40	LPPINT		CHRt~27):“K”:CHRS~114)1CHR((O!:
50	FOR	SPACE		*	f	TO 100: LPRJNT CHMIO)::	NEXT	SPACE
60	FOR	COL!!		=	1	TO !4 : RERD C : LPRINT	CHRSX)::	NEXT COLtf
70	LPSINT		:	NEXT		L
80	DllTA		14,16,34,64,140,140,!2~,!28,!40,140,64,!4,16,14

90DATt? 224,!6.232,68,34,18,1~~1~,18,34,6~,232,16,224

!.OO LPR!NT CHRS(27~:“~“:LPRINT:LPRIN?:LPRINT

Let’s run the program and see if we can get a smile both on the paper and on the face of the Gemini operator who’s creating dot matrix graphics.

.	.	..:.
:.		./.:.	,_-..
:’.,: :..:..
.:’; .: :,::. ..:			i k-..‘4i
..,		.,.:	--
		.:.
:. :.,. ,.:.::
		>)>
..: .. :.,:::
	,.	..
::,		., :.:

.. :.

Now, if you want to try a little something different, change line

40 to:

40 LPRINT CHR$(27); “L”; CHR$(114); CHR!§(O);

and run the program again. High-resolution packs the dots twice as close together, horizontally. For the same size drawing, you would need twice as many dots. Therefore, you’d have to send twice as many print head control characters to Gemini.

By this time, you probably have a good idea of how Gemini works and how to make use of its extensive features. You might want to take some time now and explore your own ideas, based on the information presented thus far. In the next chapter, we’ll consider the use of special symbol characters, block graphics, and some advanced graphic techniques.

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