Tally Genicom Matrix Printer manual Description of parameters, Calculating algorithm

Description of parameters:

c = 0		Normal mode (not compressed)
c = 1		Data Length Encoding (DLE, compressed)
v		Vertical resolution in dpi: 360, 180 dpi
h		Horizontal resolution in dpi: 360, 180 dpi
m		Vertical dot count (rows of dot graphics)
nL, nH		Horizontal dot count (columns of dot graphics)
Calculating algorithm:
n	= INT	(horizontal dot count)
H		256
n = MOD			(horizontal dot count)
L		256

x Total number of data bytes

(nH x 256) + nL + 7

x = m x INT

8

dDuring normal mode (c=0)

Graphics data d1 ... dx

dDuring DLE (c=1)

The first data byte is treated as a counter. Graphics data bytes then alternate with a data counter byte:

0 ≤ (counter byte) ≤ 127

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