TallyGenicom Matrix Printer Programmer's Manual page 302

The vertical resolution is 72 dpi.
The graphics image is printed vertically closed at a line feed of
sequences Spacing Increment (SPI), page 15, and Set Line Spacing (SLS), page 26.
Example: CSI 80 ; SP G).
Example for calculation of n
The length of graphics is 80 bytes.
n
2
n
1
Graphics data and text data can be mixed within one line.
66
Graphics
= number of bytes divided by 256
80 256
= int ( )
= dec.0
= hex.00
= remainder of division of n
= 80 mod 256
= dec.80
= hex.50
Relationship between graphics data and needles:
Needle
1/3
4/5
6/8
9/10
11/13
14/15
16/18
19/20
and n :
1 2
2
Data byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
80 720
inch. (Also see the