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5-11Vertical Format Units
Channel Assignment
The NVFU memory has the capacity for 256-line forms. The first line identification code
(channel
code) in the memory load program defines the first line on the form; the second line
identification
code defines the second line on the form, etc. Each line must have a line identifi
Ć
cation code. Filler channel codes are used for lines that will not be accessed by the print proĆ
gram. The same filler channel code can be repeated as necessary for any number of lines.
Table 5-7
illustrates the channel codes and load sequence.
Setting
bit 5 of a channel assignment code will result in all channel assignment codes after this
code being ignored until an end load code is received. The channel assignment code with bit 5
set
is accepted as the last line of the form.
The
top-of-form position is designated by channel
1. The first line of the form is automatical
Ć
ly
designated as
a top-of-form. When the load sequence is received, the paper is assumed to
be
at the proper top-of-form position. After the memory is loaded, a F
orm F
eed code (FF
, 0C
hex)
will move the paper tothe next channel 1 (top-of-form).
End Load - 6F Hex
The
end load code terminates the memory load program. The end load code is 6F hex with the
PI
line high.
Table 5-7. NVFU Channel Codes
Hex
60
61
62
63
64
65
66
67
68
69
6A
6B
6C
6E
6F
76 5 4 3 21
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
X
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
X
0
0
1
1
0
0
1
1
0
0
1
1
0
1
1
X
0
1
0
1
0
1
0
1
0
1
0
1
0
0
1
X
1 (TOF)
2 (VT)
3
4
5
6
7
8
9
10
11
12
13
Start Load
End Load
LPI Byte
Dec
96
97
98
99
100
101
102
103
104
105
106
107
108
110
111
0
0
0
0
0
0
0
N
X = Undefined, 0 or 1 1 = High 0 = Low
ASCII ChannelData Bits
8
X
X
1
1
X
X
1
1
X
X
1
1
X
X
1
1
X
X
1
1
X
X
1
1
X
X
1
1
X
X
Code
a
b
c
d
e
f
g
h
i
j
k
l
n
o
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
N=0=6 lpi
N=1=8 lpi
PI
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0