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A half line space operation is initiated by setting
the carriage reverse bit (bit 4) in a control load
command (lDCl) with a modifier of A. Half index
mode is reset by bit
5
of the command and the
half index feature card is reset by bit
5
of the
command, dropping carriage go, or resetting the
printer attachment.
Half index complete indicates that the 5 'fast'
pulses to the printer attachment have been gener-
ated and the completion of the index operation
is under control of the carriage advance digital
control in the printer.
32
ps
--It-
~
'Fast' Carriage Advance Pulses
-II-
32
ps
Carriage Go
r1.7
ms ...... _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Carria
Advance to
Carriage Shift Register and
Carriage Drive
Carriage Advance to
Printer Adapter and
Carriage Space Counter
Half I ndex Complete
A
A
B
B
-i
1-59 ps
1
2
All Pulses to Motor
3
4
59
J,LS
-U-
s
Belt Printer
50, 100, and 155 Ipm
4-9
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