Table of Contents
Advertisement
Figure
19.
Manlla
l
Entry Switches, 1711
Operator's Pane
l
gramm ing
informa
tion
,
and
a typica
l
programming
example
are contained uflder
PROGRAMMING
PROCESS
OPERATOR
UN ITS
a
nd under
1710
INSTR
UCT
IONS.
General Description
Input Operations
The sequence of operations
to
tra
nsfer
a
character from
a
n input unit
to
core storage is:
1. A
Select
Input
Channel
instruction
sends
the
30
address
of
the
input unit to
TAS,
thereby connect-
ing
th
e
unit
to the Serial
Input
/
Output
C hanne
l.
The
compu
ter
and
TAS
are
released
for o
ther
pro-
grammi
ng
after 160
p.sec.
2.
The Select
Input
Channel instruction also
ca uses
th
e
character in the input unit to be pla ced
into
an
Jnput/
Output
Data Register
( IODR).
3.
After the
tra nsfer of
th
e character
from the
inpu
t
un
it
to
10DR
is
completed
,
a
Da ta
Read
y interr
up
t
occurs. This
interrupt
is
used
to
bra
nch
the
pro-
gram to
a
read instruction that
ca uses
the
co nte nts
of
10DR
to
be
read into
core
storage.
Advertisement
Table of Contents
