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RCA 70/46 User Manual

RCA 70/46
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Shift Left Single
(SLA)
General
Description
Format
(RS)
Condition Code
Interrupt
Action
Notes
Fixed-Point
Instructions
•
The
integer
portion
of
the
operand in
the
general
register
specified by
the
first
address
(R
1
)
is
shifted
left
the
number
of
positions specified
by
the
second
address
(BdD
2
).
The second
address
is
used
as
a
count
and
not
to
address
data.
The low-order six
bits
of
the
second
address
constitute
the
count. The
remaining
bits
are
ignored.
8B
o
7 8
11 12
15
16
19
20
31
• 0 -
result
is zero.
1 -
result
is less
than
zero.
2 -
result
is
greater
than
zero.
3 - overflow.
• Fixed-point overflow.
• 1. All
31
bit
positions
of
the
integer
are
shifted.
The
sign
is not altered.
Zeros
are
inserted
in
the
right-hand
end
of
the
operand
for
each
shift.
2.
If
a
bit
is
shifted
out
of
the
left-hand end
that
is not identical to
the
sign bit, a fixed-point overflow condition exists.
150

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RCA 70/46 Specifications

General IconGeneral
BrandRCA
Model70/46
CategoryComputer Hardware
LanguageEnglish

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