Table of Contents
Advertisement
Start Load - Clears and initializes the EVFU memory for the memory load program. The
Start Load code is 1E hex when the PI line is not used or 6E hex when the PI line is used.
End Load - Terminates the memory load program. The End Load code is 1F hex when the PI
line is not used or 6F hex when the PI line is used.
Channel 1 - The top-of-form code, reserved as the first line on the form or the first line
printed (top-of-form position). The operating program sends the channel 1 code to advance
to the top of the next form.
Channels 2 through 11, 13 and 14 - Used as general channel codes, line identification codes,
or filler channels. Each line on the form must be identified by a channel code. When the operat
ing program sends the channel code, the paper advances to the line identified by the channel
code. Filler channels are used to identify lines that will never be accessed by the operating pro
gram.
Channel 12 - Reserved as the Vertical Tab channel. The Vertical Tab code (VT, 0B hex) prints
any data in the print buffer and rapidly slews the paper to the next line identified by the channel
12 code. If channel 12 is not loaded in the EVFU memory, a single line feed will be executed
when a VT code is sent.
Form Feed - A Form Feed code (0C hex) advances the paper to the next top-of-form posi
tion.
P-Series EVFU Form Definition Program
The P-Series EVFU form definition program (memory load program) is sent to the printer
from the host computer to assign channel codes to the lines of a form. The channel codes are
later accessed by the operating program to print specific data at the lines identified by the
codes. A sample EVFU form definition program is shown in Figure 5-2.
FORM DATA
NAME
Joe Jacob Doe
AGE
45
DEPARTMENT
Manager
TITLE
Station E5
ADDRESS
NUMBER
1759386
DATE
02/06/64
5-10
FORM LINE
NUMBER
1
2
3
4
5
6
7
8
Accounting
9
10
11
12
13
14
15
16
17
18
19
20
EVFU LOAD
HEX CODE PI LINE
PROGRAM
START
LOAD
CH2
CH2
CH1
CH2
CH3
CH2
CH2
CH4
CH5
CH2
CH2
CH2
CH14
CH2
CH2
CH9
CH2
CH2
CH12
CH2
END
LOAD
DISABLED
1E
11
11
10
11
12
11
11
13
14
11
11
11
1D
11
11
18
11
11
1B
11
1F
Vertical Format Units
Advertisement
Table of Contents
